1EAW - JenaLib

Asymmetric Unit (Jmol Viewer)

Biological Unit 1 (Jmol Viewer)

Biological Unit 2 (Jmol Viewer)

Title :   CRYSTAL STRUCTURE OF THE MTSP1 (MATRIPTASE)-BPTI (APROTININ) COMPLEX

Authors :   R. Friedrich, W. Bode

Date :   17 Jul 01 (Deposition) - 28 Jan 02 (Release) - 01 Apr 15 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.93

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

Keywords :   Hydrolase/Inhibitor, Complex (Serine Protease Inhibitor), Serine Proteinase, Matrix Degradation, Inhibitor, Glycoprote Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   R. Friedrich, P. Fuentes-Prior, E. Ong, G. Coombs, M. Hunter, R. Oehler, D. Pierson, R. Gonzalez, R. Huber, W. Bode, E. L. Madison
Catalytic Domain Structures Of Mt-Sp1/Matriptase, A Matrix- Degrading Transmembrane Serine Proteinase.
J. Biol. Chem. V. 277 2160 2002
PubMed-ID: 11696548 | Reference-DOI: 10.1074/JBC.M109830200

Molecule 1 - SUPPRESSOR OF TUMORIGENICITY 14
	Chains	:	A, C
	EC Number	:	3.4.21.-
	Engineered	:	YES
	Expression System	:	SACCHAROMYCES CEREVISIAE
	Expression System Taxid	:	4932
	Fragment	:	CATALYTIC RESIDUES 615-855
	Organism Common	:	HUMAN
	Organism Scientific	:	HOMO SAPIENS
	Organism Taxid	:	9606
	Synonym	:	MATRIPTASE, MEMBRANE-TYPE SERINE PROTEASE 1, MT-SP1

Molecule 2 - PANCREATIC TRYPSIN INHIBITOR
	Chains	:	B, D
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Taxid	:	562
	Organism Common	:	BOVINE
	Organism Scientific	:	BOS TAURUS
	Organism Taxid	:	9913
	Synonym	:	BBASIC PROTEASE INHIBITOR, BPI, BPTI, APROTININ

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

Summary Information (see also Sequences/Alignments below)

(no "Ligand,Modified Residues,Ions" information available for 1EAW)

(no "Site" information available for 1EAW)

Asymmetric Unit

No.	Residues
1	A:42	-	A:58
2	A:168	-	A:182
3	A:191	-	A:220
4	B:5	-	B:55
5	B:14	-	B:38
6	B:30	-	B:51
7	C:42	-	C:58
8	C:168	-	C:182
9	C:191	-	C:220
10	D:5	-	D:55
11	D:14	-	D:38
12	D:30	-	D:51

(no "Cis Peptide Bond" information available for 1EAW)

Asymmetric Unit (1, 2)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_032849	G	827	R	ST14_HUMAN	Disease (ARCI11)	137852931	A/C	G	216	R

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

Biological Unit 1 (1, 1)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_032849	G	827	R	ST14_HUMAN	Disease (ARCI11)	137852931	A	G	216	R

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

Biological Unit 2 (1, 1)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_032849	G	827	R	ST14_HUMAN	Disease (ARCI11)	137852931	C	G	216	R

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

Asymmetric Unit (5, 10)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	BPTI_KUNITZ_2	PS50279	Pancreatic trypsin inhibitor (Kunitz) family profile.	BPT1_BOVIN	40-90	2	B:5-55 D:5-55
2	BPTI_KUNITZ_1	PS00280	Pancreatic trypsin inhibitor (Kunitz) family signature.	BPT1_BOVIN	68-86	2	B:33-51 D:33-51
3	TRYPSIN_DOM	PS50240	Serine proteases, trypsin domain profile.	ST14_HUMAN	615-854	2	A:16-243 C:16-243
4	TRYPSIN_HIS	PS00134	Serine proteases, trypsin family, histidine active site.	ST14_HUMAN	652-657	2	A:53-58 C:53-58
5	TRYPSIN_SER	PS00135	Serine proteases, trypsin family, serine active site.	ST14_HUMAN	799-810	2	A:189-200 C:189-200

Biological Unit 1 (5, 5)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	BPTI_KUNITZ_2	PS50279	Pancreatic trypsin inhibitor (Kunitz) family profile.	BPT1_BOVIN	40-90	1	B:5-55 -
2	BPTI_KUNITZ_1	PS00280	Pancreatic trypsin inhibitor (Kunitz) family signature.	BPT1_BOVIN	68-86	1	B:33-51 -
3	TRYPSIN_DOM	PS50240	Serine proteases, trypsin domain profile.	ST14_HUMAN	615-854	1	A:16-243 -
4	TRYPSIN_HIS	PS00134	Serine proteases, trypsin family, histidine active site.	ST14_HUMAN	652-657	1	A:53-58 -
5	TRYPSIN_SER	PS00135	Serine proteases, trypsin family, serine active site.	ST14_HUMAN	799-810	1	A:189-200 -

Biological Unit 2 (5, 5)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	BPTI_KUNITZ_2	PS50279	Pancreatic trypsin inhibitor (Kunitz) family profile.	BPT1_BOVIN	40-90	1	- D:5-55
2	BPTI_KUNITZ_1	PS00280	Pancreatic trypsin inhibitor (Kunitz) family signature.	BPT1_BOVIN	68-86	1	- D:33-51
3	TRYPSIN_DOM	PS50240	Serine proteases, trypsin domain profile.	ST14_HUMAN	615-854	1	- C:16-243
4	TRYPSIN_HIS	PS00134	Serine proteases, trypsin family, histidine active site.	ST14_HUMAN	652-657	1	- C:53-58
5	TRYPSIN_SER	PS00135	Serine proteases, trypsin family, serine active site.	ST14_HUMAN	799-810	1	- C:189-200

Asymmetric Unit (4, 8)

	ENSEMBL					UniProtKB			PDB
No.	Transcript ID	Exon	Exon ID	Genome Location	Length	ID	Location	Length	Count	Location	Length
1.1a	ENST00000278742	1a	ENSE00001334626	chr11:130029457-130029955	499	ST14_HUMAN	1-27	27	0	-	-
1.2	ENST00000278742	2	ENSE00000990418	chr11:130058009-130058168	160	ST14_HUMAN	28-81	54	0	-	-
1.3	ENST00000278742	3	ENSE00000990419	chr11:130058425-130058552	128	ST14_HUMAN	81-123	43	0	-	-
1.4	ENST00000278742	4	ENSE00000990421	chr11:130058764-130058834	71	ST14_HUMAN	124-147	24	0	-	-
1.5c	ENST00000278742	5c	ENSE00000990422	chr11:130059634-130059791	158	ST14_HUMAN	147-200	54	0	-	-
1.6b	ENST00000278742	6b	ENSE00000990423	chr11:130060008-130060043	36	ST14_HUMAN	200-212	13	0	-	-
1.7b	ENST00000278742	7b	ENSE00001278516	chr11:130060349-130060589	241	ST14_HUMAN	212-292	81	0	-	-
1.8	ENST00000278742	8	ENSE00000990429	chr11:130064044-130064183	140	ST14_HUMAN	292-339	48	0	-	-
1.9	ENST00000278742	9	ENSE00000990430	chr11:130064535-130064632	98	ST14_HUMAN	339-371	33	0	-	-
1.10b	ENST00000278742	10b	ENSE00000990431	chr11:130066234-130066343	110	ST14_HUMAN	372-408	37	0	-	-
1.11b	ENST00000278742	11b	ENSE00000990432	chr11:130066465-130066595	131	ST14_HUMAN	408-452	45	0	-	-
1.12	ENST00000278742	12	ENSE00000990433	chr11:130067736-130067840	105	ST14_HUMAN	452-487	36	0	-	-
1.13	ENST00000278742	13	ENSE00000990434	chr11:130068203-130068313	111	ST14_HUMAN	487-524	38	0	-	-
1.14	ENST00000278742	14	ENSE00000990435	chr11:130068403-130068516	114	ST14_HUMAN	524-562	39	0	-	-
1.15	ENST00000278742	15	ENSE00000990436	chr11:130068842-130068964	123	ST14_HUMAN	562-603	42	0	-	-
1.16	ENST00000278742	16	ENSE00000990437	chr11:130069846-130070032	187	ST14_HUMAN	603-665	63	2	A:16-60F C:16-60F	51 51
1.17	ENST00000278742	17	ENSE00000990438	chr11:130078305-130078579	275	ST14_HUMAN	665-757	93	2	A:60F-148 C:60F-148	93 93
1.18	ENST00000278742	18	ENSE00000990439	chr11:130079337-130079473	137	ST14_HUMAN	757-802	46	2	A:148-192 (gaps) C:148-192 (gaps)	47 47
1.19b	ENST00000278742	19b	ENSE00000990440	chr11:130079557-130080271	715	ST14_HUMAN	803-855	53	2	A:193-244 (gaps) C:193-244 (gaps)	54 54

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:241
 aligned with ST14_HUMAN | Q9Y5Y6 from UniProtKB/Swiss-Prot  Length:855

    Alignment length:241
                                   624       634       644       654       664       674       684       694       704       714       724       734       744       754       764       774       784       794       804       814       824       834       844       854 
          ST14_HUMAN    615 VVGGTDADEGEWPWQVSLHALGQGHICGASLISPNWLVSAAHCYIDDRGFRYSDPTQWTAFLGLHDQSQRSAPGVQERRLKRIISHPFFNDFTFDYDIALLELEKPAEYSSMVRPICLPDASHVFPAGKAIWVTGWGHTQYGGTGALILQKGEIRVINQTTCENLLPQQITPRMMCVGFLSGGVDSCQGDSGGPLSSVEADGRIFQAGVVSWGDGCAQRNKPGVYTRLPLFRDWIKENTGV  855
               SCOP domains d1eawa_ A: Matriptase MTSP1                                                                                                                                                                                                                       SCOP domains
               CATH domains 1eawA01     1eawA02 A:28-120,A:233-244 Trypsin-like serine proteases                                               1eawA01 A:16-27,A:121-232 Trypsin-like serine proteases                                                           1eawA02      CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....ee........eeeeee...eeeeeeeeee..eeee.hhhhh........hhh.eeeee.............eeeeeeeeee.............eeeee..........................eeeeee..............eeeeeee.hhhhhhhhh.......eeeee...............eeeee.....eeeeeeeee..........eeee.hhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------R---------------------------- SAPs(SNPs)
                PROSITE (1) TRYPSIN_DOM  PDB: A:16-243 UniProt: 615-854                                                                                                                                                                                                     - PROSITE (1)
                PROSITE (2) -------------------------------------TRYPSI---------------------------------------------------------------------------------------------------------------------------------------------TRYPSIN_SER --------------------------------------------- PROSITE (2)
           Transcript 1 (1) Exon 1.16  PDB: A:16-60F UniProt: 603-665          -------------------------------------------------------------------------------------------Exon 1.18  PDB: A:148-192 (gaps)              Exon 1.19b  PDB: A:193-244 (gaps) UniProt: 803-855    Transcript 1 (1)
           Transcript 1 (2) --------------------------------------------------Exon 1.17  PDB: A:60F-148 UniProt: 665-757                                                   -------------------------------------------------------------------------------------------------- Transcript 1 (2)
                1eaw A   16 VVGGTDADEGEWPWQVSLHALGQGHICGASLISPNWLVSAAHCYIDDRGFRYSDPTQWTAFLGLHDQSQRSAPGVQERRLKRIISHPFFNDFTFDYDIALLELEKPAEYSSMVRPICLPDASHVFPAGKAIWVTGWGHTQYGGTGALILQKGEIRVINQTTCENLLPQQITPRMMCVGFLSGGVDSCQGDSGGPLSSVEADGRIFQAGVVSWGDGCAQRNKPGVYTRLPLFRDWIKENTGV  244
                                    25        35        45        55     ||60E||||    66        76 |      85        95       105       115       125       135       145  ||   156       166       176       185 |     194       204|      213   ||  223       233       243 
                                                                       60A||||||||               77A                                                                    148|                               184A  |               204A          217|  |                       
                                                                        60B|||||||                                                                                       150                                  186A                              219  |                       
                                                                         60C||||||                                                                                                                                                                221A                       
                                                                          60D|||||                                                                                                                                                                                           
                                                                           60E||||                                                                                                                                                                                           
                                                                            60F|||                                                                                                                                                                                           
                                                                             60G||                                                                                                                                                                                           
                                                                              60H|                                                                                                                                                                                           
                                                                               60I

Chain B from PDB  Type:PROTEIN  Length:56
 aligned with BPT1_BOVIN | P00974 from UniProtKB/Swiss-Prot  Length:100

    Alignment length:56
                                    45        55        65        75        85      
          BPT1_BOVIN     36 RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCG   91
               SCOP domains d1eawb_ B: Pancreatic trypsin inhibitor, BPTI            SCOP domains
               CATH domains 1eawB00 B:1-56 Factor Xa Inhibitor                       CATH domains
               Pfam domains -------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhh..........eeeeee.hhhh.eeeeee...........hhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ----BPTI_KUNITZ_2  PDB: B:5-55 UniProt: 40-90          - PROSITE (1)
                PROSITE (2) --------------------------------BPTI_KUNITZ_1      ----- PROSITE (2)
                 Transcript -------------------------------------------------------- Transcript
                1eaw B    1 RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCG   56
                                    10        20        30        40        50

Chain C from PDB  Type:PROTEIN  Length:241
 aligned with ST14_HUMAN | Q9Y5Y6 from UniProtKB/Swiss-Prot  Length:855

    Alignment length:241
                                   624       634       644       654       664       674       684       694       704       714       724       734       744       754       764       774       784       794       804       814       824       834       844       854 
          ST14_HUMAN    615 VVGGTDADEGEWPWQVSLHALGQGHICGASLISPNWLVSAAHCYIDDRGFRYSDPTQWTAFLGLHDQSQRSAPGVQERRLKRIISHPFFNDFTFDYDIALLELEKPAEYSSMVRPICLPDASHVFPAGKAIWVTGWGHTQYGGTGALILQKGEIRVINQTTCENLLPQQITPRMMCVGFLSGGVDSCQGDSGGPLSSVEADGRIFQAGVVSWGDGCAQRNKPGVYTRLPLFRDWIKENTGV  855
               SCOP domains d1eawc_ C: Matriptase MTSP1                                                                                                                                                                                                                       SCOP domains
               CATH domains 1eawC01     1eawC02 C:28-120,C:233-244 Trypsin-like serine proteases                                               1eawC01 C:16-27,C:121-232 Trypsin-like serine proteases                                                           1eawC02      CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....ee........eeeeee...eeeeeeee....eeee..............hhh.eeeee.............eeeeeeeeee.............eeeee..........................eeeee...............eeeeeee.hhhhhhhhh.......eeeee...............eeeee.....eeeeeeeee..........eeeee...hhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------R---------------------------- SAPs(SNPs)
                PROSITE (1) TRYPSIN_DOM  PDB: C:16-243 UniProt: 615-854                                                                                                                                                                                                     - PROSITE (1)
                PROSITE (2) -------------------------------------TRYPSI---------------------------------------------------------------------------------------------------------------------------------------------TRYPSIN_SER --------------------------------------------- PROSITE (2)
           Transcript 1 (1) Exon 1.16  PDB: C:16-60F UniProt: 603-665          -------------------------------------------------------------------------------------------Exon 1.18  PDB: C:148-192 (gaps)              Exon 1.19b  PDB: C:193-244 (gaps) UniProt: 803-855    Transcript 1 (1)
           Transcript 1 (2) --------------------------------------------------Exon 1.17  PDB: C:60F-148 UniProt: 665-757                                                   -------------------------------------------------------------------------------------------------- Transcript 1 (2)
                1eaw C   16 VVGGTDADEGEWPWQVSLHALGQGHICGASLISPNWLVSAAHCYIDDRGFRYSDPTQWTAFLGLHDQSQRSAPGVQERRLKRIISHPFFNDFTFDYDIALLELEKPAEYSSMVRPICLPDASHVFPAGKAIWVTGWGHTQYGGTGALILQKGEIRVINQTTCENLLPQQITPRMMCVGFLSGGVDSCQGDSGGPLSSVEADGRIFQAGVVSWGDGCAQRNKPGVYTRLPLFRDWIKENTGV  244
                                    25        35        45        55     ||60E||||    66        76 |      85        95       105       115       125       135       145  ||   156       166       176       185 |     194       204|      213   ||  223       233       243 
                                                                       60A||||||||               77A                                                                    148|                               184A  |               204A          217|  |                       
                                                                        60B|||||||                                                                                       150                                  186A                              219  |                       
                                                                         60C||||||                                                                                                                                                                221A                       
                                                                          60D|||||                                                                                                                                                                                           
                                                                           60E||||                                                                                                                                                                                           
                                                                            60F|||                                                                                                                                                                                           
                                                                             60G||                                                                                                                                                                                           
                                                                              60H|                                                                                                                                                                                           
                                                                               60I

Chain D from PDB  Type:PROTEIN  Length:56
 aligned with BPT1_BOVIN | P00974 from UniProtKB/Swiss-Prot  Length:100

    Alignment length:56
                                    45        55        65        75        85      
          BPT1_BOVIN     36 RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCG   91
               SCOP domains d1eawd_ D: Pancreatic trypsin inhibitor, BPTI            SCOP domains
               CATH domains 1eawD00 D:1-56 Factor Xa Inhibitor                       CATH domains
               Pfam domains -------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhh..........eeeeee......eeeeee...........hhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) ----BPTI_KUNITZ_2  PDB: D:5-55 UniProt: 40-90          - PROSITE (1)
                PROSITE (2) --------------------------------BPTI_KUNITZ_1      ----- PROSITE (2)
                 Transcript -------------------------------------------------------- Transcript
                1eaw D    1 RPDFCLEPPYTGPCKARIIRYFYNAKAGLCQTFVYGGCRAKRNNFKSAEDCMRTCG   56
                                    10        20        30        40        50

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(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Few Secondary Structures (1120)

Architecture: Irregular (1120)

Topology: Factor Xa Inhibitor (116)

Homologous Superfamily: Factor Xa Inhibitor (116)

Human (Homo sapiens) (13)

1a	1eawB00	B:1-56
1b	1eawD00	D:1-56

Class: Mainly Beta (13760)

Architecture: Beta Barrel (4804)

Topology: Thrombin, subunit H (1535)

Homologous Superfamily: Trypsin-like serine proteases (1488)

Human (Homo sapiens) (615)

2a	1eawA02	A:28-120,A:233-244
2b	1eawC02	C:28-120,C:233-244
2c	1eawA01	A:16-27,A:121-232
2d	1eawC01	C:16-27,C:121-232

(no "Pfam Domain" information available for 1EAW)

Asymmetric Unit(hide GO term definitions)

Chain A,C (ST14_HUMAN | Q9Y5Y6)

molecular function
	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: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: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:0060672	epithelial cell morphogenesis involved in placental branching	The change in form (cell shape and size) that occurs when a trophoblast cell elongates to contribute to the branching of the placenta.
	GO:0030216	keratinocyte differentiation	The process in which a relatively unspecialized cell acquires specialized features of a keratinocyte.
	GO:0001843	neural tube closure	The last step in the formation of the neural tube, where the paired neural folds are brought together and fuse at the dorsal midline.
	GO:0006508	proteolysis	The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
cellular component
	GO:0016323	basolateral plasma membrane	The region of the plasma membrane that includes the basal end and sides of the cell. Often used in reference to animal polarized epithelial membranes, where the basal membrane is the part attached to the extracellular matrix, or in plant cells, where the basal membrane is defined with respect to the zygotic axis.
	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:0019897	extrinsic component of plasma membrane	The component of a plasma membrane consisting of gene products and protein complexes that are loosely bound to one of its surfaces, but not integrated into the hydrophobic region.
	GO:0016021	integral component of membrane	The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0005887	integral component of plasma membrane	The component of the plasma membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane.
	GO:0016020	membrane	A lipid bilayer along with all the proteins and protein complexes embedded in it an attached to it.
	GO:0005886	plasma membrane	The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.

Chain B,D (BPT1_BOVIN | P00974)

molecular function
	GO:0030414	peptidase inhibitor activity	Stops, prevents or reduces the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds.
	GO:0019870	potassium channel inhibitor activity	Stops, prevents, or reduces the activity of a potassium channel.
	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:0004867	serine-type endopeptidase inhibitor activity	Stops, prevents or reduces the activity of serine-type endopeptidases, enzymes that catalyze the hydrolysis of nonterminal peptide bonds in a polypeptide chain; a serine residue (and a histidine residue) are at the active center of the enzyme.
biological process
	GO:0010951	negative regulation of endopeptidase activity	Any process that decreases the frequency, rate or extent of endopeptidase activity, the endohydrolysis of peptide bonds within proteins.
	GO:0010466	negative regulation of peptidase activity	Any process that stops or reduces the rate of peptidase activity, the hydrolysis of peptide bonds within proteins.
	GO:0090331	negative regulation of platelet aggregation	Any process that decreases the rate, frequency or extent of platelet aggregation. Platelet aggregation is the adhesion of one platelet to one or more other platelets via adhesion molecules.
	GO:0070495	negative regulation of thrombin-activated receptor signaling pathway	Any process that stops, prevents, or reduces the frequency, rate or extent of thrombin-activated receptor protein signaling pathway activity. A thrombin receptor signaling pathway is the series of molecular signals generated as a consequence of a thrombin-activated receptor binding to one of its physiological ligands.
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.

Asymmetric Unit
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1eax	CRYSTAL STRUCTURE OF MTSP1 (MATRIPTASE)

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (0, 0)

Sites (0, 0)

SS Bonds (12, 12)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (1, 2)

PROSITE Motifs (5, 10)

Exons (4, 8)

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SCOP Domains (2, 4)

CATH Domains (2, 6)

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Gene Ontology (25, 26)

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Related Entries

Entries Sharing at Least One Protein Chain (UniProt ID)

Related Entries Specified in the PDB File