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Title :   CRYSTAL STRUCTURE OF FEL D 1- THE MAJOR CAT ALLERGEN

Authors :   L. Kaiser, H. Gronlund, T. Sandalova, H. G. Ljunggren, M. Van Hage- Hamsten, A. Achour, G. Schneider

Date :   25 Jun 03 (Deposition) - 14 Oct 03 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.85

Chains :   Asym./Biol. Unit : A,B

Keywords :   Cat Allergen, Uteroglobin, Secretoglobin (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   L. Kaiser, H. Gronlund, T. Sandalova, H. G. Ljunggren, M. Van Hage-Hamsten, A. Achour, G. Schneider
The Crystal Structure Of The Major Cat Allergen Fel D 1, A Member Of The Secretoglobin Family.
J. Biol. Chem. V. 278 37730 2003
PubMed-ID: 12851385 | Reference-DOI: 10.1074/JBC.M304740200
(for further references see the PDB file header)

Molecule 1 - MAJOR ALLERGEN I POLYPEPTIDE, FUSED CHAIN 2, CHAIN 1
	Chains	:	A, B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PET20B
	Expression System Strain	:	BL21 (DE3) PLYS S
	Expression System Taxid	:	562
	Expression System Vector Type	:	PLASMID
	Gene	:	CH2, CH1
	Organism Common	:	DOMESTIC CAT
	Organism Scientific	:	FELIS CATUS
	Organism Taxid	:	9685
	Synonym	:	ALLERGEN FEL D 1-B, ALLERGEN FEL D 1-A

		1	2
Asymmetric/Biological Unit	:	A	B

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (1, 4)

No.	Name	Count	Type	Full Name
1	MPD	4	Ligand/Ion	(4S)-2-METHYL-2,4-PENTANEDIOL

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	PHE B:10 , PHE B:14 , VAL B:17 , TYR B:49 , PHE B:105 , HOH B:413	BINDING SITE FOR RESIDUE MPD B 302
2	AC2	SOFTWARE	PHE A:14 , VAL A:17 , TYR A:49 , MET A:64 , PHE A:105 , LEU A:153	BINDING SITE FOR RESIDUE MPD A 303
3	AC3	SOFTWARE	PHE A:14 , PHE A:15 , ALA A:18 , ASN A:19 , HOH A:411	BINDING SITE FOR RESIDUE MPD A 304
4	AC4	SOFTWARE	PHE B:15 , ASN B:19	BINDING SITE FOR RESIDUE MPD B 305

Asymmetric/Biological Unit

No.	Residues
1	A:7	-	A:162
2	A:48	-	A:136
3	A:73	-	A:95
4	B:7	-	B:162
5	B:48	-	B:136
6	B:73	-	B:95

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

Asymmetric/Biological Unit (6, 12)

								dbSNP	PDB
No.	Source	Variant ID	Variant			UniProt ID	Status	ID	Chain	Variant
1	UniProt	VAR_FEL1B_FELCA_001 *	I	72	L	FEL1B_FELCA	---	---	A/B	I	55	L
2	UniProt	VAR_FEL1B_FELCA_002 *	I	72	V	FEL1B_FELCA	---	---	A/B	I	55	V
3	UniProt	VAR_FEL1B_FELCA_003 *	M	91	T	FEL1B_FELCA	---	---	B A	I	74 94	T
4	UniProt	VAR_FEL1B_FELCA_004 *	Q	96	E	FEL1B_FELCA	---	---	A B	A	99 118	E
5	UniProt	VAR_FEL1A_FELCA_001 *	K	51	N	FEL1A_FELCA	---	---	A/B	K	121	N
6	UniProt	VAR_FEL1B_FELCA_005 *	N	105	K	FEL1B_FELCA	---	---	A/B	S	151	K
	* ID not provided by source

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

Asymmetric/Biological Unit (1, 4)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	SCGB	PS51311	Secretoglobin (SCGB) family profile.	FEL1B_FELCA	22-91	2	A:5-73 B:5-74
1	SCGB	PS51311	Secretoglobin (SCGB) family profile.	FEL1A_FELCA	23-92	2	A:93-162 B:94-162

(no "Exon" information available for 1PUO)

Asymmetric/Biological 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:141
 aligned with FEL1A_FELCA | P30438 from UniProtKB/Swiss-Prot  Length:92

    Alignment length:141
                                                                  2                          20                                                                          
                                                                 1|         3              19 |                                                                      92  
                                     -         -         -       ||-        |4        14    | | 23        33        43        53        63        73        83        |- 
          FEL1A_FELCA     - -------------------------------------MK---------GACVLVLLWAALLLISG-GNCEICPAVKRDVDLFLTGTPDEYVEQVAQYKALPVVLENARILKNCVDAKMTEEDKENALSVLDKIYTSPLC--   -
               SCOP domains d1puoa2 A:5-73 Allergen Fel d I-B chain                              d1puoa1 A:93-164 Allergen Fel d I-A chain                                SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
             SAPs(SNPs) (1) --------------------------------------------------L----------------------------------------------N-----------------------------K------------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) --------------------------------------------------V------------------------------------------------------------------------------------------ SAPs(SNPs) (2)
                PROSITE (2) ---------------------------------------------------------------------SCGB  PDB: A:93-162 UniProt: 23-92                                    -- PROSITE (2)
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1puo A   5 ETCPIFYDVFFAVANGNELLLDLSLTKVNATEPERTAMKKIQDCYVENGLISRVLDGLVMTTISSSKDCEICPAVKRDVDLFLTGTPDEYVEQVAQYKALPVVLENARILKNCVDAKMTEEDKENALSLLDKIYTSPLCLE 164
                                    14        24        34        44        54        64        93       103       113       123       133       143       153       163 
                                                                                               73|                                                                       
                                                                                                93

Chain A from PDB  Type:PROTEIN  Length:141
 aligned with FEL1B_FELCA | P30440 from UniProtKB/Swiss-Prot  Length:109

    Alignment length:141
                                                                                                 91                                                     104              
                                                                                               90 |    97                                        98  103  |  109         
                                    31        41        51        61        71        81        |-|     |  -         -         -         -        99   |  |107 |       - 
          FEL1B_FELCA    22 ETCPIFYDVFFAVANGNELLLDLSLTKVNATEPERTAMKKIQDCYVENGLISRVLDGLVMTTISSSKDC-MGEAVQN-----------------------------------------TVEDLK--LNTLGR---------   -
               SCOP domains d1puoa2 A:5-73 Allergen Fel d I-B chain                              d1puoa1 A:93-164 Allergen Fel d I-A chain                                SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..hhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh......hhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
             SAPs(SNPs) (1) --------------------------------------------------L----------------------------------------------N-----------------------------K------------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) --------------------------------------------------V------------------------------------------------------------------------------------------ SAPs(SNPs) (2)
                    PROSITE SCGB  PDB: A:5-73 UniProt: 22-91                                       ---------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1puo A   5 ETCPIFYDVFFAVANGNELLLDLSLTKVNATEPERTAMKKIQDCYVENGLISRVLDGLVMTTISSSKDCEICPAVKRDVDLFLTGTPDEYVEQVAQYKALPVVLENARILKNCVDAKMTEEDKENALSLLDKIYTSPLCLE 164
                                    14        24        34        44        54        64        93       103       113       123       133       143       153       163 
                                                                                               73|                                                                       
                                                                                                93

Chain B from PDB  Type:PROTEIN  Length:142
 aligned with FEL1A_FELCA | P30438 from UniProtKB/Swiss-Prot  Length:92

    Alignment length:142
                                                                                                  24                                                                      
                                                                                                23 |                                                                      
                                                                  2                           21 | |                                                                      
                                                                 1|         3               20 | | |                                                                  92  
                                     -         -         -       ||-        |4        14     | |23 |      32        42        52        62        72        82        92  
          FEL1A_FELCA     - -------------------------------------MK---------GACVLVLLWAALLLISGG-NCE-ICPAVKRDVDLFLTGTPDEYVEQVAQYKALPVVLENARILKNCVDAKMTEEDKENALSVLDKIYTSPLC--   -
               SCOP domains d1puob2 B:5-74 Allergen Fel d I-B chain                               d1puob1 B:93-164 Allergen Fel d I-A chain                                SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) --Feld-I_B-1puoB01 B:7-73                                            ---Uteroglobin-1puoB03 B:95-162                                        -- Pfam domains (1)
           Pfam domains (2) --Feld-I_B-1puoB02 B:7-73                                            ---Uteroglobin-1puoB04 B:95-162                                        -- Pfam domains (2)
         Sec.struct. author ..hhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
             SAPs(SNPs) (1) --------------------------------------------------L--------------------------------------------E--N-----------------------------K------------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) --------------------------------------------------V------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
                PROSITE (2) ---------------------------------------------------------------------SCGB  PDB: B:94-162 UniProt: 23-92                                     -- PROSITE (2)
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1puo B   5 ETCPIFYDVFFAVANGNELLLDLSLTKVNATEPERTAMKKIQDCYVENGLISRVLDGLVMTTISSSKDCMEICPAVKRDVDLFLTGTPDEYVEQVAQYKALPVVLENARILKNCVDAKMTEEDKENALSLLDKIYTSPLCLE 164
                                    14        24        34        44        54        64        74|      102       112       122       132       142       152       162  
                                                                                                74|                                                                       
                                                                                                 93

Chain B from PDB  Type:PROTEIN  Length:142
 aligned with FEL1B_FELCA | P30440 from UniProtKB/Swiss-Prot  Length:109

    Alignment length:142
                                                                                                                                                         104              
                                                                                                91              92     93  97                     98  103  |  109         
                                    31        41        51        61        71        81        91         -     |   -  |   |  -         -        98    |  106  |      -  
          FEL1B_FELCA    22 ETCPIFYDVFFAVANGNELLLDLSLTKVNATEPERTAMKKIQDCYVENGLISRVLDGLVMTTISSSKDCM---------------G------EAVQN----------------------TVEDLK--LNTLGR---------   -
               SCOP domains d1puob2 B:5-74 Allergen Fel d I-B chain                               d1puob1 B:93-164 Allergen Fel d I-A chain                                SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) --Feld-I_B-1puoB01 B:7-73                                            ---Uteroglobin-1puoB03 B:95-162                                        -- Pfam domains (1)
           Pfam domains (2) --Feld-I_B-1puoB02 B:7-73                                            ---Uteroglobin-1puoB04 B:95-162                                        -- Pfam domains (2)
         Sec.struct. author ..hhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
             SAPs(SNPs) (1) --------------------------------------------------L--------------------------------------------E--N-----------------------------K------------- SAPs(SNPs) (1)
             SAPs(SNPs) (2) --------------------------------------------------V------------------------------------------------------------------------------------------- SAPs(SNPs) (2)
                    PROSITE SCGB  PDB: B:5-74 UniProt: 22-91                                      ------------------------------------------------------------------------ PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1puo B   5 ETCPIFYDVFFAVANGNELLLDLSLTKVNATEPERTAMKKIQDCYVENGLISRVLDGLVMTTISSSKDCMEICPAVKRDVDLFLTGTPDEYVEQVAQYKALPVVLENARILKNCVDAKMTEEDKENALSLLDKIYTSPLCLE 164
                                    14        24        34        44        54        64        74|      102       112       122       132       142       152       162  
                                                                                                74|                                                                       
                                                                                                 93

Legend:		→ Mismatch	(orange background)
	-	→ Gap	(green background, '-', border residues have a numbering label)
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	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/Biological Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: All alpha proteins (14657)

Fold: Uteroglobin-like (10)

Superfamily: Uteroglobin-like (10)

Family: Uteroglobin-like (10)

Protein domain: Allergen Fel d I-A chain (3)

Cat (Felis catus) [TaxId: 9685] (3)

1a	d1puoa1	A:93-164
1b	d1puob1	B:93-164

Protein domain: Allergen Fel d I-B chain (3)

Cat (Felis catus) [TaxId: 9685] (3)

2a	d1puoa2	A:5-73
2b	d1puob2	B:5-74

(no "CATH Domain" information available for 1PUO)

Asymmetric/Biological Unit

Clans(

)

Families(

)

Organisms( (-)

)

Clan: Uteroglobin (2)

Family: Feld-I_B (1)

Felis catus (Cat) (Felis silvestris catus) (1)

1a	Feld-I_B-1puoB01	B:7-73
1b	Feld-I_B-1puoB02	B:7-73

Family: Uteroglobin (2)

Felis catus (Cat) (Felis silvestris catus) (1)

2a	Uteroglobin-1puoB03	B:95-162
2b	Uteroglobin-1puoB04	B:95-162

Asymmetric/Biological Unit(hide GO term definitions)

Chain A,B (FEL1B_FELCA | P30440)

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 A,B (FEL1A_FELCA | P30438)

molecular function
	GO:0005496	steroid binding	Interacting selectively and non-covalently with a steroid, any of a large group of substances that have in common a ring system based on 1,2-cyclopentanoperhydrophenanthrene.
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/Biological Unit
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Description

Compounds

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Chains, Units

Ligands, Modified Residues, Ions (1, 4)

Sites (4, 4)

SS Bonds (6, 6)

Cis Peptide Bonds (0, 0)

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