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Asymmetric Unit (Jmol Viewer)

Asym. Unit - sites (Jmol Viewer)

Biological Unit 1 (Jmol Viewer)

Biol. Unit 1 - sites (Jmol Viewer)

Biological Unit 2 (Jmol Viewer)

Title :   CRYSTAL STRUCTURE OF THE COMPLEX OF HUMAN LACTOFERRIN N-LOBE AND LACTOFERRIN-BINDING DOMAIN OF PNEUMOCOCCAL SURFACE PROTEIN A

Authors :   D. Chattopadhyay, O. Senkovich, W. J. Cook

Date :   23 Apr 07 (Deposition) - 19 Jun 07 (Release) - 13 Jul 11 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.91

Chains :   Asym. Unit : A,B,C,D
Biol. Unit 1: A,C  (1x)
Biol. Unit 2: B,D  (1x)

Keywords :   Lactoferrin, Pneumococcal Surface Protein A, Protein-Protein Complex, Metal Transport, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   O. Senkovich, W. J. Cook, S. Mirza, S. K. Hollingshead, I. I. Protasevich, D. E. Briles, D. Chattopadhyay
Structure Of A Complex Of Human Lactoferrin N-Lobe With Pneumococcal Surface Protein A Provides Insight Into Microbial Defense Mechanism.
J. Mol. Biol. V. 370 701 2007
PubMed-ID: 17543335 | Reference-DOI: 10.1016/J.JMB.2007.04.075

Molecule 1 - LACTOTRANSFERRIN
	Chains	:	A, B
	EC Number	:	3.4.21.-
	Engineered	:	YES
	Expression System	:	INSECT CELLS
	Expression System Plasmid	:	PACGP67-A
	Expression System Strain	:	HI5
	Expression System Vector Type	:	VIRUS
	Fragment	:	N-TERMINAL LOBE
	Gene	:	LTF, LF
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	LACTOFERRIN, TALALACTOFERRIN ALFA

Molecule 2 - PNEUMOCOCCAL SURFACE PROTEIN A (PSPA)
	Chains	:	C, D
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Plasmid	:	PET15B
	Expression System Strain	:	BL21(DE3)
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PLASMID
	Fragment	:	LACTOFERRIN-BINDING DOMAIN
	Gene	:	PSPA
	Organism Scientific	:	STREPTOCOCCUS PNEUMONIAE
	Organism Taxid	:	1313
	Strain	:	RX1

		1	2	3	4
Asymmetric Unit	:	A	B	C	D
Biological Unit 1 (1x)	:	A		C
Biological Unit 2 (1x)	:		B		D

Summary Information (see also Sequences/Alignments below)

Asymmetric Unit (5, 14)

No.	Name	Count	Type	Full Name
1	CO3	2	Ligand/Ion	CARBONATE ION
2	FE	2	Ligand/Ion	FE (III) ION
3	NAG	2	Ligand/Ion	N-ACETYL-D-GLUCOSAMINE
4	SO4	6	Ligand/Ion	SULFATE ION
5	ZN	2	Ligand/Ion	ZINC ION

Biological Unit 1 (3, 5)

No.	Name	Count	Type	Full Name
1	CO3	1	Ligand/Ion	CARBONATE ION
2	FE	-1	Ligand/Ion	FE (III) ION
3	NAG	1	Ligand/Ion	N-ACETYL-D-GLUCOSAMINE
4	SO4	3	Ligand/Ion	SULFATE ION
5	ZN	-1	Ligand/Ion	ZINC ION

Biological Unit 2 (3, 5)

No.	Name	Count	Type	Full Name
1	CO3	1	Ligand/Ion	CARBONATE ION
2	FE	-1	Ligand/Ion	FE (III) ION
3	NAG	1	Ligand/Ion	N-ACETYL-D-GLUCOSAMINE
4	SO4	3	Ligand/Ion	SULFATE ION
5	ZN	-1	Ligand/Ion	ZINC ION

Asymmetric Unit (14, 14)

No.	Name	Evidence	Residues	Description
01	AC1	SOFTWARE	GLN A:111 , LEU A:137 , ASN A:138	BINDING SITE FOR RESIDUE NAG A 345
02	AC2	SOFTWARE	GLN B:111 , LEU B:137 , ASN B:138	BINDING SITE FOR RESIDUE NAG B 345
03	AC3	SOFTWARE	ASP A:61 , TYR A:93 , THR A:118 , ARG A:122 , THR A:123 , ALA A:124 , GLY A:125 , TYR A:193 , FE A:347	BINDING SITE FOR RESIDUE CO3 A 346
04	AC4	SOFTWARE	ASP A:61 , TYR A:93 , TYR A:193 , HIS A:254 , CO3 A:346	BINDING SITE FOR RESIDUE FE A 347
05	AC5	SOFTWARE	GLN A:22 , ARG A:25 , ASN A:26 , HOH A:417 , ARG B:134 , ASN B:331	BINDING SITE FOR RESIDUE SO4 A 348
06	AC6	SOFTWARE	ARG A:90 , THR A:91 , HIS A:92	BINDING SITE FOR RESIDUE SO4 A 349
07	AC7	SOFTWARE	ARG A:29 , PHE A:279 , SER A:284 , PRO A:285 , LYS A:286	BINDING SITE FOR RESIDUE SO4 A 350
08	AC8	SOFTWARE	ASP B:61 , TYR B:93 , THR B:118 , ARG B:122 , THR B:123 , ALA B:124 , GLY B:125 , TYR B:193 , FE B:347	BINDING SITE FOR RESIDUE CO3 B 346
09	AC9	SOFTWARE	ASP B:61 , TYR B:93 , TYR B:193 , HIS B:254 , CO3 B:346	BINDING SITE FOR RESIDUE FE B 347
10	BC1	SOFTWARE	ARG A:134 , ASN A:331 , GLN B:22 , ARG B:25 , ASN B:26	BINDING SITE FOR RESIDUE SO4 B 348
11	BC2	SOFTWARE	ARG B:90 , THR B:91 , HIS B:92	BINDING SITE FOR RESIDUE SO4 B 349
12	BC3	SOFTWARE	ARG B:29 , PHE B:279 , SER B:284 , LYS B:286	BINDING SITE FOR RESIDUE SO4 B 350
13	BC4	SOFTWARE	HIS A:247 , GLU C:262 , HIS D:166 , ASP D:168	BINDING SITE FOR RESIDUE ZN D 501
14	BC5	SOFTWARE	HIS B:247 , HIS C:166 , ASP C:168 , GLU D:262	BINDING SITE FOR RESIDUE ZN C 502

Asymmetric Unit

No.	Residues
1	A:10	-	A:46
2	A:20	-	A:37
3	A:116	-	A:199
4	A:158	-	A:174
5	A:171	-	A:182
6	A:232	-	A:246
7	B:10	-	B:46
8	B:20	-	B:37
9	B:116	-	B:199
10	B:158	-	B:174
11	B:171	-	B:182
12	B:232	-	B:246

Asymmetric Unit

No.	Residues
1	Ala A:71	-	Pro A:72
2	Pro A:142	-	Pro A:143
3	Ala B:71	-	Pro B:72
4	Pro B:142	-	Pro B:143

Asymmetric Unit (3, 6)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_013504	A	29	T	TRFL_HUMAN	Polymorphism	1126477	A/B	A	11	T
2	UniProt	VAR_013505	K	47	R	TRFL_HUMAN	Polymorphism	1126478	A/B	R	29	R
3	UniProt	VAR_013506	I	148	T	TRFL_HUMAN	Polymorphism	1126479	A/B	I	130	T

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 1 (3, 3)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_013504	A	29	T	TRFL_HUMAN	Polymorphism	1126477	A	A	11	T
2	UniProt	VAR_013505	K	47	R	TRFL_HUMAN	Polymorphism	1126478	A	R	29	R
3	UniProt	VAR_013506	I	148	T	TRFL_HUMAN	Polymorphism	1126479	A	I	130	T

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Biological Unit 2 (3, 3)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_013504	A	29	T	TRFL_HUMAN	Polymorphism	1126477	B	A	11	T
2	UniProt	VAR_013505	K	47	R	TRFL_HUMAN	Polymorphism	1126478	B	R	29	R
3	UniProt	VAR_013506	I	148	T	TRFL_HUMAN	Polymorphism	1126479	B	I	130	T

SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

Asymmetric Unit (4, 8)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	TRANSFERRIN_LIKE_4	PS51408	Transferrin-like domain profile.	TRFL_HUMAN	25-352 364-695	2	A:7-333 B:7-333 -
2	TRANSFERRIN_LIKE_1	PS00205	Transferrin-like domain signature 1.	TRFL_HUMAN	111-120 454-463	2	A:93-102 B:93-102 -
3	TRANSFERRIN_LIKE_2	PS00206	Transferrin-like domain signature 2.	TRFL_HUMAN	211-227 547-563	2	A:193-209 B:193-209 -
4	TRANSFERRIN_LIKE_3	PS00207	Transferrin-like domain signature 3.	TRFL_HUMAN	245-275 589-619	2	A:227-257 B:227-257 -

Biological Unit 1 (4, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	TRANSFERRIN_LIKE_4	PS51408	Transferrin-like domain profile.	TRFL_HUMAN	25-352 364-695	1	A:7-333 - -
2	TRANSFERRIN_LIKE_1	PS00205	Transferrin-like domain signature 1.	TRFL_HUMAN	111-120 454-463	1	A:93-102 - -
3	TRANSFERRIN_LIKE_2	PS00206	Transferrin-like domain signature 2.	TRFL_HUMAN	211-227 547-563	1	A:193-209 - -
4	TRANSFERRIN_LIKE_3	PS00207	Transferrin-like domain signature 3.	TRFL_HUMAN	245-275 589-619	1	A:227-257 - -

Biological Unit 2 (4, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	TRANSFERRIN_LIKE_4	PS51408	Transferrin-like domain profile.	TRFL_HUMAN	25-352 364-695	1	- B:7-333 -
2	TRANSFERRIN_LIKE_1	PS00205	Transferrin-like domain signature 1.	TRFL_HUMAN	111-120 454-463	1	- B:93-102 -
3	TRANSFERRIN_LIKE_2	PS00206	Transferrin-like domain signature 2.	TRFL_HUMAN	211-227 547-563	1	- B:193-209 -
4	TRANSFERRIN_LIKE_3	PS00207	Transferrin-like domain signature 3.	TRFL_HUMAN	245-275 589-619	1	- B:227-257 -

Asymmetric Unit (7, 14)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.5a	ENST00000231751	5a	ENSE00001814982	chr3:46506653-46506315	339	TRFL_HUMAN	1-15	15	0	-	-
1.8b	ENST00000231751	8b	ENSE00001591766	chr3:46501309-46501146	164	TRFL_HUMAN	15-69	55	2	A:3-51 B:3-51	49 49
1.9	ENST00000231751	9	ENSE00001078630	chr3:46497888-46497780	109	TRFL_HUMAN	70-106	37	2	A:52-88 B:52-88	37 37
1.10a	ENST00000231751	10a	ENSE00002201536	chr3:46497468-46497286	183	TRFL_HUMAN	106-167	62	2	A:88-149 B:88-149	62 62
1.12b	ENST00000231751	12b	ENSE00001078629	chr3:46496932-46496785	148	TRFL_HUMAN	167-216	50	2	A:149-198 B:149-198	50 50
1.13a	ENST00000231751	13a	ENSE00000825947	chr3:46495850-46495795	56	TRFL_HUMAN	216-235	20	2	A:198-217 B:198-217	20 20
1.14	ENST00000231751	14	ENSE00000825946	chr3:46492163-46491985	179	TRFL_HUMAN	235-294	60	2	A:217-276 B:217-276	60 60
1.15	ENST00000231751	15	ENSE00000767141	chr3:46491518-46491344	175	TRFL_HUMAN	295-353	59	2	A:277-333 B:277-333	57 57
1.16b	ENST00000231751	16b	ENSE00000767140	chr3:46490508-46490354	155	TRFL_HUMAN	353-404	52	0	-	-
1.17	ENST00000231751	17	ENSE00000492524	chr3:46488889-46488799	91	TRFL_HUMAN	405-435	31	0	-	-
1.18	ENST00000231751	18	ENSE00000767138	chr3:46487984-46487931	54	TRFL_HUMAN	435-453	19	0	-	-
1.19	ENST00000231751	19	ENSE00000492526	chr3:46486927-46486772	156	TRFL_HUMAN	453-505	53	0	-	-
1.20	ENST00000231751	20	ENSE00000492527	chr3:46485073-46484932	142	TRFL_HUMAN	505-552	48	0	-	-
1.22a	ENST00000231751	22a	ENSE00000767135	chr3:46482974-46482907	68	TRFL_HUMAN	552-575	24	0	-	-
1.23a	ENST00000231751	23a	ENSE00001292001	chr3:46480971-46480787	185	TRFL_HUMAN	575-636	62	0	-	-
1.24c	ENST00000231751	24c	ENSE00000825945	chr3:46479620-46479431	190	TRFL_HUMAN	637-700	64	0	-	-
1.25c	ENST00000231751	25c	ENSE00001289842	chr3:46477720-46477136	585	TRFL_HUMAN	700-710	11	0	-	-

Asymmetric Unit

Reformat:	Number of residues per line = ('0' or empty: single-line sequence representation)
	Number of residues per labelling interval =
	UniProt sequence: complete aligned part

Show mapping:	SCOP domains	CATH domains	Pfam domains	Secondary structure (by author)
	SAPs(SNPs)	PROSITE motifs	Exons
	(details for a mapped element are shown in a popup box when the mouse pointer rests over it)

Chain A from PDB  Type:PROTEIN  Length:331
 aligned with Q5EK51_HUMAN | Q5EK51 from UniProtKB/TrEMBL  Length:711

    Alignment length:331
                                    31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351 
         Q5EK51_HUMAN    22 RRRSVQWCAVSQPEATKCFQWQRNMRRVRGPPVSCIKRDSPIQCIQAIAENRADAVTLDGGFIYEAGLAPYKLRPVAAEVYGTERQPRTHYYAVAVVKKGGSFQLNELQGLKSCHTGLRRNAGWNVPIGTLRPFLNWTGPPEPIEAAVARFFSASCVPGADKGQFPNLCRLCAGTGENKCAFSSQEPYFSYSGAFKCLRDGAGDVAFIRESTVFEDLSDEAERDEYELLCPDNTRKPVDKFKDCHLARVPSHAVVARSVNGKEDAIWNLLRQAQEKFGKDKSPKFQLFGSPSGQKDLLFKDSAIGFSRVPPRIDSGLYLGSGYFTAIQNLR 352
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains 2pmsA01 A:3-82,A:255-317 Periplasmic binding protein-like II                    2pmsA02 A:83-254 Periplasmic binding protein-like II                                                                                                                        2pmsA01 A:3-82,A:255-317 Periplasmic binding protein-like II   ---------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeee.hhhhhhhhhhhhhhhhhh....eeeee..hhhhhhhhhhh.....eeehhhhhhhhhh....eeeeeeeeeee..eee.eeeeeeeee.............eeee........hhhhhhhhhhhh.......hhhhhhhhhh.eee........hhhhh.....hhhhh.........hhhhhhhhhhhh....eeeee.hhhhhhh.hhhhhh.eeeee...eeee.hhhhhh..eeee..eeeee....hhhhhhhhhhhhhhhhh..........................eeee.....hhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------T-----------------R----------------------------------------------------------------------------------------------------T----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2pms A   3 RRRSVQWCAVSQPEATKCFQWQRNMRRVRGPPVSCIKRDSPIQCIQAIAENRADAVTLDGGFIYEAGLAPYKLRPVAAEVYGTERQPRTHYYAVAVVKKGGSFQLNELQGLKSCHTGLRRTAGWNVPIGTLRPFLNWTGPPEPIEAAVARFFSASCVPGADKGQFPNLCRLCAGTGENKCAFSSQEPYFSYSGAFKCLRDGAGDVAFIRESTVFEDLSDEAERDEYELLCPDNTRKPVDKFKDCHLARVPSHAVVARSVNGKEDAIWNLLRQAQEKFGKDKSPKFQLFGSPSGQKDLLFKDSAIGFSRVPPRIDSGLYLGSGYFTAIQNLR 333
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332

Chain A from PDB  Type:PROTEIN  Length:331
 aligned with TRFL_HUMAN | P02788 from UniProtKB/Swiss-Prot  Length:710

    Alignment length:331
                                    30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350 
           TRFL_HUMAN    21 RRRSVQWCAVSQPEATKCFQWQRNMRKVRGPPVSCIKRDSPIQCIQAIAENRADAVTLDGGFIYEAGLAPYKLRPVAAEVYGTERQPRTHYYAVAVVKKGGSFQLNELQGLKSCHTGLRRTAGWNVPIGTLRPFLNWTGPPEPIEAAVARFFSASCVPGADKGQFPNLCRLCAGTGENKCAFSSQEPYFSYSGAFKCLRDGAGDVAFIRESTVFEDLSDEAERDEYELLCPDNTRKPVDKFKDCHLARVPSHAVVARSVNGKEDAIWNLLRQAQEKFGKDKSPKFQLFGSPSGQKDLLFKDSAIGFSRVPPRIDSGLYLGSGYFTAIQNLR 351
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains 2pmsA01 A:3-82,A:255-317 Periplasmic binding protein-like II                    2pmsA02 A:83-254 Periplasmic binding protein-like II                                                                                                                        2pmsA01 A:3-82,A:255-317 Periplasmic binding protein-like II   ---------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeee.hhhhhhhhhhhhhhhhhh....eeeee..hhhhhhhhhhh.....eeehhhhhhhhhh....eeeeeeeeeee..eee.eeeeeeeee.............eeee........hhhhhhhhhhhh.......hhhhhhhhhh.eee........hhhhh.....hhhhh.........hhhhhhhhhhhh....eeeee.hhhhhhh.hhhhhh.eeeee...eeee.hhhhhh..eeee..eeeee....hhhhhhhhhhhhhhhhh..........................eeee.....hhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------T-----------------R----------------------------------------------------------------------------------------------------T----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ----TRANSFERRIN_LIKE_4  PDB: A:7-333 UniProt: 25-352                                                                                                                                                                                                                                                                                        PROSITE (1)
                PROSITE (2) ------------------------------------------------------------------------------------------TRANSFERRI------------------------------------------------------------------------------------------TRANSFERRIN_LIKE_-----------------TRANSFERRIN_LIKE_3             ---------------------------------------------------------------------------- PROSITE (2)
           Transcript 1 (1) Exon 1.8b  PDB: A:3-51 UniProt: 15-69            ------------------------------------Exon 1.10a  PDB: A:88-149 UniProt: 106-167                    ------------------------------------------------Exon 1.13a          -----------------------------------------------------------Exon 1.15  PDB: A:277-333 UniProt: 295-353 [INCOMPLETE]   Transcript 1 (1)
           Transcript 1 (2) -------------------------------------------------Exon 1.9  PDB: A:52-88               ------------------------------------------------------------Exon 1.12b  PDB: A:149-198 UniProt: 167-216       ------------------Exon 1.14  PDB: A:217-276 UniProt: 235-294                  --------------------------------------------------------- Transcript 1 (2)
                 2pms A   3 RRRSVQWCAVSQPEATKCFQWQRNMRRVRGPPVSCIKRDSPIQCIQAIAENRADAVTLDGGFIYEAGLAPYKLRPVAAEVYGTERQPRTHYYAVAVVKKGGSFQLNELQGLKSCHTGLRRTAGWNVPIGTLRPFLNWTGPPEPIEAAVARFFSASCVPGADKGQFPNLCRLCAGTGENKCAFSSQEPYFSYSGAFKCLRDGAGDVAFIRESTVFEDLSDEAERDEYELLCPDNTRKPVDKFKDCHLARVPSHAVVARSVNGKEDAIWNLLRQAQEKFGKDKSPKFQLFGSPSGQKDLLFKDSAIGFSRVPPRIDSGLYLGSGYFTAIQNLR 333
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332

Chain B from PDB  Type:PROTEIN  Length:331
 aligned with Q5EK51_HUMAN | Q5EK51 from UniProtKB/TrEMBL  Length:711

    Alignment length:331
                                    31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231       241       251       261       271       281       291       301       311       321       331       341       351 
         Q5EK51_HUMAN    22 RRRSVQWCAVSQPEATKCFQWQRNMRRVRGPPVSCIKRDSPIQCIQAIAENRADAVTLDGGFIYEAGLAPYKLRPVAAEVYGTERQPRTHYYAVAVVKKGGSFQLNELQGLKSCHTGLRRNAGWNVPIGTLRPFLNWTGPPEPIEAAVARFFSASCVPGADKGQFPNLCRLCAGTGENKCAFSSQEPYFSYSGAFKCLRDGAGDVAFIRESTVFEDLSDEAERDEYELLCPDNTRKPVDKFKDCHLARVPSHAVVARSVNGKEDAIWNLLRQAQEKFGKDKSPKFQLFGSPSGQKDLLFKDSAIGFSRVPPRIDSGLYLGSGYFTAIQNLR 352
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains 2pmsB01 B:3-82,B:255-317 Periplasmic binding protein-like II                    2pmsB02 B:83-254 Periplasmic binding protein-like II                                                                                                                        2pmsB01 B:3-82,B:255-317 Periplasmic binding protein-like II   ---------------- CATH domains
           Pfam domains (1) ----Transferrin-2pmsB01 B:7-333                                                                                                                                                                                                                                                                                                             Pfam domains (1)
           Pfam domains (2) ----Transferrin-2pmsB02 B:7-333                                                                                                                                                                                                                                                                                                             Pfam domains (2)
         Sec.struct. author ....eeeee.hhhhhhhhhhhhhhhhhh....eeeee..hhhhhhhhhhh.....eeehhhhhhhhhh....eeeeeeeeee....ee.eeeeeeeee.....hhhhh...eeee........hhhhhhhhhhhh.......hhhhhhhhhh.eee........hhhhh.....hhhhh.........hhhhhhhhhhhh....eeeee.hhhhhhh.hhhhhh.eeee.....eee..hhhhh..eeee..eeeee....hhhhhhhhhhhhhhhhh..........................eeee.....hhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------T-----------------R----------------------------------------------------------------------------------------------------T----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2pms B   3 RRRSVQWCAVSQPEATKCFQWQRNMRRVRGPPVSCIKRDSPIQCIQAIAENRADAVTLDGGFIYEAGLAPYKLRPVAAEVYGTERQPRTHYYAVAVVKKGGSFQLNELQGLKSCHTGLRRTAGWNVPIGTLRPFLNWTGPPEPIEAAVARFFSASCVPGADKGQFPNLCRLCAGTGENKCAFSSQEPYFSYSGAFKCLRDGAGDVAFIRESTVFEDLSDEAERDEYELLCPDNTRKPVDKFKDCHLARVPSHAVVARSVNGKEDAIWNLLRQAQEKFGKDKSPKFQLFGSPSGQKDLLFKDSAIGFSRVPPRIDSGLYLGSGYFTAIQNLR 333
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332

Chain B from PDB  Type:PROTEIN  Length:331
 aligned with TRFL_HUMAN | P02788 from UniProtKB/Swiss-Prot  Length:710

    Alignment length:331
                                    30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350 
           TRFL_HUMAN    21 RRRSVQWCAVSQPEATKCFQWQRNMRKVRGPPVSCIKRDSPIQCIQAIAENRADAVTLDGGFIYEAGLAPYKLRPVAAEVYGTERQPRTHYYAVAVVKKGGSFQLNELQGLKSCHTGLRRTAGWNVPIGTLRPFLNWTGPPEPIEAAVARFFSASCVPGADKGQFPNLCRLCAGTGENKCAFSSQEPYFSYSGAFKCLRDGAGDVAFIRESTVFEDLSDEAERDEYELLCPDNTRKPVDKFKDCHLARVPSHAVVARSVNGKEDAIWNLLRQAQEKFGKDKSPKFQLFGSPSGQKDLLFKDSAIGFSRVPPRIDSGLYLGSGYFTAIQNLR 351
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains 2pmsB01 B:3-82,B:255-317 Periplasmic binding protein-like II                    2pmsB02 B:83-254 Periplasmic binding protein-like II                                                                                                                        2pmsB01 B:3-82,B:255-317 Periplasmic binding protein-like II   ---------------- CATH domains
           Pfam domains (1) ----Transferrin-2pmsB01 B:7-333                                                                                                                                                                                                                                                                                                             Pfam domains (1)
           Pfam domains (2) ----Transferrin-2pmsB02 B:7-333                                                                                                                                                                                                                                                                                                             Pfam domains (2)
         Sec.struct. author ....eeeee.hhhhhhhhhhhhhhhhhh....eeeee..hhhhhhhhhhh.....eeehhhhhhhhhh....eeeeeeeeee....ee.eeeeeeeee.....hhhhh...eeee........hhhhhhhhhhhh.......hhhhhhhhhh.eee........hhhhh.....hhhhh.........hhhhhhhhhhhh....eeeee.hhhhhhh.hhhhhh.eeee.....eee..hhhhh..eeee..eeeee....hhhhhhhhhhhhhhhhh..........................eeee.....hhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------T-----------------R----------------------------------------------------------------------------------------------------T----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ----TRANSFERRIN_LIKE_4  PDB: B:7-333 UniProt: 25-352                                                                                                                                                                                                                                                                                        PROSITE (1)
                PROSITE (2) ------------------------------------------------------------------------------------------TRANSFERRI------------------------------------------------------------------------------------------TRANSFERRIN_LIKE_-----------------TRANSFERRIN_LIKE_3             ---------------------------------------------------------------------------- PROSITE (2)
           Transcript 1 (1) Exon 1.8b  PDB: B:3-51 UniProt: 15-69            ------------------------------------Exon 1.10a  PDB: B:88-149 UniProt: 106-167                    ------------------------------------------------Exon 1.13a          -----------------------------------------------------------Exon 1.15  PDB: B:277-333 UniProt: 295-353 [INCOMPLETE]   Transcript 1 (1)
           Transcript 1 (2) -------------------------------------------------Exon 1.9  PDB: B:52-88               ------------------------------------------------------------Exon 1.12b  PDB: B:149-198 UniProt: 167-216       ------------------Exon 1.14  PDB: B:217-276 UniProt: 235-294                  --------------------------------------------------------- Transcript 1 (2)
                 2pms B   3 RRRSVQWCAVSQPEATKCFQWQRNMRRVRGPPVSCIKRDSPIQCIQAIAENRADAVTLDGGFIYEAGLAPYKLRPVAAEVYGTERQPRTHYYAVAVVKKGGSFQLNELQGLKSCHTGLRRTAGWNVPIGTLRPFLNWTGPPEPIEAAVARFFSASCVPGADKGQFPNLCRLCAGTGENKCAFSSQEPYFSYSGAFKCLRDGAGDVAFIRESTVFEDLSDEAERDEYELLCPDNTRKPVDKFKDCHLARVPSHAVVARSVNGKEDAIWNLLRQAQEKFGKDKSPKFQLFGSPSGQKDLLFKDSAIGFSRVPPRIDSGLYLGSGYFTAIQNLR 333
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332

Chain C from PDB  Type:PROTEIN  Length:109
 aligned with Q54972_STREE | Q54972 from UniProtKB/TrEMBL  Length:619

    Alignment length:125
                                   204       214       224       234       244       254       264       274       284       294       304       314     
         Q54972_STREE   195 KQKVDAEEVAPQAKIAELENQVHRLEQELKEIDESESEDYAKEGFRAPLQSKLDAKKAKLSKLEELSDKIDELDAEIAKLEDQLKAAEENNNVEDYFKEGLEKTIAAKKAELEKTEADLKKAVNE 319
               SCOP domains ---d2pmsc1 C:167-288 Pneumococcal             surface protein A, PspA                                                         SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...hhhhhhhhhhhhhhhhhhhhhhhhhh.....------------hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...----hhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------- Transcript
                 2pms C 164 GSHMDAEEVAPQAKIAELENQVHRLEQELKEIDE------------APLQSKLDAKKAKLSKLEELSDKIDELDAEIAKLEDQLKAAEE----EDYFKEGLEKTIAAKKAELEKTEADLKKAVNE 288
                                   173       183       193   |     -      |213       223       233       243        |-   |   263       273       283     
                                                           197          210                                       252  257

Chain C from PDB  Type:PROTEIN  Length:109
 aligned with Q8DRI0_STRR6 | Q8DRI0 from UniProtKB/TrEMBL  Length:619

    Alignment length:125
                                   204       214       224       234       244       254       264       274       284       294       304       314     
         Q8DRI0_STRR6   195 KQKVDAEEVAPQAKIAELENQVHRLEQELKEIDESESEDYAKEGFRAPLQSKLDAKKAKLSKLEELSDKIDELDAEIAKLEDQLKAAEENNNVEDYFKEGLEKTIAAKKAELEKTEADLKKAVNE 319
               SCOP domains ---d2pmsc1 C:167-288 Pneumococcal             surface protein A, PspA                                                         SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...hhhhhhhhhhhhhhhhhhhhhhhhhh.....------------hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...----hhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------- Transcript
                 2pms C 164 GSHMDAEEVAPQAKIAELENQVHRLEQELKEIDE------------APLQSKLDAKKAKLSKLEELSDKIDELDAEIAKLEDQLKAAEE----EDYFKEGLEKTIAAKKAELEKTEADLKKAVNE 288
                                   173       183       193   |     -      |213       223       233       243        |-   |   263       273       283     
                                                           197          210                                       252  257

Chain D from PDB  Type:PROTEIN  Length:109
 aligned with Q54972_STREE | Q54972 from UniProtKB/TrEMBL  Length:619

    Alignment length:125
                                   204       214       224       234       244       254       264       274       284       294       304       314     
         Q54972_STREE   195 KQKVDAEEVAPQAKIAELENQVHRLEQELKEIDESESEDYAKEGFRAPLQSKLDAKKAKLSKLEELSDKIDELDAEIAKLEDQLKAAEENNNVEDYFKEGLEKTIAAKKAELEKTEADLKKAVNE 319
               SCOP domains d2pmsd_ D: Pneumococcal surface pr            otein A, PspA                                                                   SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eehhhhhhhhhhhhhhhhhhhhhhhhhhhh..------------.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...----hhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------- Transcript
                 2pms D 164 GSHMDAEEVAPQAKIAELENQVHRLEQELKEIDE------------APLQSKLDAKKAKLSKLEELSDKIDELDAEIAKLEDQLKAAEE----EDYFKEGLEKTIAAKKAELEKTEADLKKAVNE 288
                                   173       183       193   |     -      |213       223       233       243        |-   |   263       273       283     
                                                           197          210                                       252  257

Chain D from PDB  Type:PROTEIN  Length:109
 aligned with Q8DRI0_STRR6 | Q8DRI0 from UniProtKB/TrEMBL  Length:619

    Alignment length:125
                                   204       214       224       234       244       254       264       274       284       294       304       314     
         Q8DRI0_STRR6   195 KQKVDAEEVAPQAKIAELENQVHRLEQELKEIDESESEDYAKEGFRAPLQSKLDAKKAKLSKLEELSDKIDELDAEIAKLEDQLKAAEENNNVEDYFKEGLEKTIAAKKAELEKTEADLKKAVNE 319
               SCOP domains d2pmsd_ D: Pneumococcal surface pr            otein A, PspA                                                                   SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eehhhhhhhhhhhhhhhhhhhhhhhhhhhh..------------.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...----hhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------- Transcript
                 2pms D 164 GSHMDAEEVAPQAKIAELENQVHRLEQELKEIDE------------APLQSKLDAKKAKLSKLEELSDKIDELDAEIAKLEDQLKAAEE----EDYFKEGLEKTIAAKKAELEKTEADLKKAVNE 288
                                   173       183       193   |     -      |213       223       233       243        |-   |   263       273       283     
                                                           197          210                                       252  257

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
		→ Modified Residue	(blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
	x	→ Chemical Group	(purple background, 'x', labelled with number + name, e.g. ACE or NH2)
	extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '\|'

Asymmetric Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: Coiled coil proteins (689)

Fold: Antiparallel coiled-coil (45)

Superfamily: PspA lactotransferrin-binding region (1)

Family: PspA lactotransferrin-binding region (1)

Protein domain: Pneumococcal surface protein A, PspA (1)

Pneumococcus (Streptococcus pneumoniae) [TaxId: 1313] (1)

1a	d2pmsc1	C:167-288
1b	d2pmsd_	D:

Asymmetric Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Alpha Beta (26913)

Architecture: 3-Layer(aba) Sandwich (12045)

Topology: D-Maltodextrin-Binding Protein; domain 2 (600)

Homologous Superfamily: Periplasmic binding protein-like II (486)

Human (Homo sapiens) (55)

1a	2pmsA02	A:83-254
1b	2pmsB02	B:83-254
1c	2pmsA01	A:3-82,A:255-317
1d	2pmsB01	B:3-82,B:255-317

Asymmetric Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: PBP (391)

Family: Transferrin (53)

Homo sapiens (Human) (23)

1a	Transferrin-2pmsB01	B:7-333
1b	Transferrin-2pmsB02	B:7-333

Asymmetric Unit(hide GO term definitions)

Chain A,B (TRFL_HUMAN | P02788)

molecular function
	GO:0003677	DNA binding	Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
	GO:0008201	heparin binding	Interacting selectively and non-covalently with heparin, any member of a group of glycosaminoglycans found mainly as an intracellular component of mast cells and which consist predominantly of alternating alpha-(1->4)-linked D-galactose and N-acetyl-D-glucosamine-6-sulfate residues.
	GO:0016787	hydrolase activity	Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
	GO:0005506	iron ion binding	Interacting selectively and non-covalently with iron (Fe) ions.
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
	GO:0008233	peptidase activity	Catalysis of the hydrolysis of a peptide bond. A peptide bond is a covalent bond formed when the carbon atom from the carboxyl group of one amino acid shares electrons with the nitrogen atom from the amino group of a second amino acid.
	GO:0005515	protein binding	Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
	GO:0043539	protein serine/threonine kinase activator activity	Binds to and increases the activity of a protein serine/threonine kinase.
	GO:0004252	serine-type endopeptidase activity	Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
	GO:0008236	serine-type peptidase activity	Catalysis of the hydrolysis of peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
biological process
	GO:0019731	antibacterial humoral response	An immune response against bacteria mediated through a body fluid. Examples of this process are the antibacterial humoral responses in Mus musculus and Drosophila melanogaster.
	GO:0019732	antifungal humoral response	An immune response against a fungus mediated through a body fluid. An example of this process is the antifungal humoral response in Drosophila melanogaster.
	GO:0060349	bone morphogenesis	The process in which bones are generated and organized.
	GO:0045454	cell redox homeostasis	Any process that maintains the redox environment of a cell or compartment within a cell.
	GO:0044267	cellular protein metabolic process	The chemical reactions and pathways involving a specific protein, rather than of proteins in general, occurring at the level of an individual cell. Includes cellular protein modification.
	GO:0042742	defense response to bacterium	Reactions triggered in response to the presence of a bacterium that act to protect the cell or organism.
	GO:0006959	humoral immune response	An immune response mediated through a body fluid.
	GO:0002376	immune system process	Any process involved in the development or functioning of the immune system, an organismal system for calibrated responses to potential internal or invasive threats.
	GO:0002227	innate immune response in mucosa	Any process of the innate immune response that takes place in the mucosal tissues.
	GO:0006811	ion transport	The directed movement of charged atoms or small charged molecules into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore.
	GO:0033214	iron assimilation by chelation and transport	A process in which iron (Fe3+) is solubilized by ferric iron-specific chelators, known as siderophores, excreted by a cell; the iron-siderophore complex is then transported into the cell by specific cell surface receptors.
	GO:0055072	iron ion homeostasis	Any process involved in the maintenance of an internal steady state of iron ions within an organism or cell.
	GO:0044793	negative regulation by host of viral process	A process in which a host organism stops, prevents or reduces the frequency, rate or extent of a process being mediated by a virus with which it is infected.
	GO:0032780	negative regulation of ATPase activity	Any process that stops or reduces the rate of ATP hydrolysis by an ATPase.
	GO:0043066	negative regulation of apoptotic process	Any process that stops, prevents, or reduces the frequency, rate or extent of cell death by apoptotic process.
	GO:0031665	negative regulation of lipopolysaccharide-mediated signaling pathway	Any process that stops, prevents, or reduces the frequency, rate or extent of signaling in response to detection of lipopolysaccharide.
	GO:2001205	negative regulation of osteoclast development	Any process that stops, prevents or reduces the frequency, rate or extent of osteoclast development.
	GO:1900229	negative regulation of single-species biofilm formation in or on host organism	Any process that stops, prevents or reduces the frequency, rate or extent of single-species biofilm formation in or on host organism.
	GO:2000308	negative regulation of tumor necrosis factor (ligand) superfamily member 11 production	Any process that stops, prevents or reduces the frequency, rate or extent of tumor necrosis factor (ligand) superfamily member 11 production.
	GO:0045071	negative regulation of viral genome replication	Any process that stops, prevents, or reduces the frequency, rate or extent of viral genome replication.
	GO:0048525	negative regulation of viral process	Any process that stops, prevents, or reduces the frequency, rate or extent of a multi-organism process in which a virus is a participant.
	GO:0001503	ossification	The formation of bone or of a bony substance, or the conversion of fibrous tissue or of cartilage into bone or a bony substance.
	GO:0043123	positive regulation of I-kappaB kinase/NF-kappaB signaling	Any process that activates or increases the frequency, rate or extent of I-kappaB kinase/NF-kappaB signaling.
	GO:0051092	positive regulation of NF-kappaB transcription factor activity	Any process that activates or increases the frequency, rate or extent of activity of the transcription factor NF-kappaB.
	GO:1900159	positive regulation of bone mineralization involved in bone maturation	Any process that activates or increases the frequency, rate or extent of bone mineralization involved in bone maturation.
	GO:1902732	positive regulation of chondrocyte proliferation	Any process that increases the frequency, rate or extent of the multiplication or reproduction of chondrocytes by cell division, resulting in the expansion of their population. A chondrocyte is a polymorphic cell that forms cartilage.
	GO:0045669	positive regulation of osteoblast differentiation	Any process that activates or increases the frequency, rate or extent of osteoblast differentiation.
	GO:0033690	positive regulation of osteoblast proliferation	Any process that activates or increases the rate or extent of osteoblast proliferation.
	GO:0071902	positive regulation of protein serine/threonine kinase activity	Any process that increases the rate, frequency, or extent of protein serine/threonine kinase activity.
	GO:0034145	positive regulation of toll-like receptor 4 signaling pathway	Any process that activates or increases the frequency, rate, or extent of toll-like receptor 4 signaling pathway.
	GO:0006508	proteolysis	The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
	GO:0001817	regulation of cytokine production	Any process that modulates the frequency, rate, or extent of production of a cytokine.
	GO:0006355	regulation of transcription, DNA-templated	Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
	GO:0032680	regulation of tumor necrosis factor production	Any process that modulates the frequency, rate, or extent of tumor necrosis factor production.
	GO:0001895	retina homeostasis	A tissue homeostatic process involved in the maintenance of an internal equilibrium within the retina of the eye, including control of cellular proliferation and death and control of metabolic function.
	GO:0006351	transcription, DNA-templated	The cellular synthesis of RNA on a template of DNA.
	GO:0006810	transport	The directed movement of substances (such as macromolecules, small molecules, ions) or cellular components (such as complexes and organelles) into, out of or within a cell, or between cells, or within a multicellular organism by means of some agent such as a transporter, pore or motor protein.
cellular component
	GO:0009986	cell surface	The external part of the cell wall and/or plasma membrane.
	GO:0005737	cytoplasm	All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
	GO:0070062	extracellular exosome	A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
	GO:0005576	extracellular region	The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
	GO:0005615	extracellular space	That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.
	GO:0005634	nucleus	A membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. In most cells, the nucleus contains all of the cell's chromosomes except the organellar chromosomes, and is the site of RNA synthesis and processing. In some species, or in specialized cell types, RNA metabolism or DNA replication may be absent.
	GO:0097013	phagocytic vesicle lumen	The volume enclosed by the membrane of a phagocytic vesicle.
	GO:0043234	protein complex	A stable macromolecular complex composed (only) of two or more polypeptide subunits along with any covalently attached molecules (such as lipid anchors or oligosaccharide) or non-protein prosthetic groups (such as nucleotides or metal ions). Prosthetic group in this context refers to a tightly bound cofactor. The component polypeptide subunits may be identical.
	GO:0030141	secretory granule	A small subcellular vesicle, surrounded by a membrane, that is formed from the Golgi apparatus and contains a highly concentrated protein destined for secretion. Secretory granules move towards the periphery of the cell and upon stimulation, their membranes fuse with the cell membrane, and their protein load is exteriorized. Processing of the contained protein may take place in secretory granules.
	GO:0042581	specific granule	Granule with a membranous, tubular internal structure, found primarily in mature neutrophil cells. Most are released into the extracellular fluid. Specific granules contain lactoferrin, lysozyme, vitamin B12 binding protein and elastase.

Chain A,B (Q5EK51_HUMAN | Q5EK51)

molecular function
	GO:0005506	iron ion binding	Interacting selectively and non-covalently with iron (Fe) ions.
	GO:0004252	serine-type endopeptidase activity	Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
biological process
	GO:0019731	antibacterial humoral response	An immune response against bacteria mediated through a body fluid. Examples of this process are the antibacterial humoral responses in Mus musculus and Drosophila melanogaster.
	GO:0019732	antifungal humoral response	An immune response against a fungus mediated through a body fluid. An example of this process is the antifungal humoral response in Drosophila melanogaster.
	GO:0006508	proteolysis	The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
	GO:0001817	regulation of cytokine production	Any process that modulates the frequency, rate, or extent of production of a cytokine.
cellular component
	GO:0005576	extracellular region	The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
	GO:0005615	extracellular space	That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.

Chain C,D (Q8DRI0_STRR6 | Q8DRI0)

Chain C,D (Q54972_STREE | Q54972)

Asymmetric Unit
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	Cis Peptide Bonds
		Ala A:71 - Pro A:72	[ RasMol ]
		Ala B:71 - Pro B:72	[ RasMol ]
		Pro A:142 - Pro A:143	[ RasMol ]
		Pro B:142 - Pro B:143	[ RasMol ]

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		Biological Unit 2	[ Jena3D ]

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	2pms
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	Q5EK51_HUMAN \| Q5EK51
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	Q8DRI0_STRR6 \| Q8DRI0
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	TRFL_HUMAN \| P02788
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	3.4.21.-
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	TRFL_HUMAN \| P02788
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1eh3	N-LOBE OF HUMAN LACTOFERRIN
1h43	N-LOBE OF HUMAN LACTOFERRIN
1h44	N-LOBE OF HUMAN LACTOFERRIN
1h45	N-LOBE OF HUMAN LACTOFERRIN
1lct	N-LOBE OF HUMAN LACTOFERRIN

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (5, 14)

Sites (14, 14)

SS Bonds (12, 12)

Cis Peptide Bonds (4, 4)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (3, 6)

PROSITE Motifs (4, 8)

Exons (7, 14)

Sequences/Alignments

Classification and Annotation

SCOP Domains (1, 2)

CATH Domains (1, 4)

Pfam Domains (1, 2)

Gene Ontology (57, 65)

Visualization

Interactive Views

Still Images

Databases and Analysis Tools

Databases

Analysis Tools

Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File