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Title :   CRYSTAL STRUCTURE OF THE CALCIUM-BINDING POLLEN ALLERGEN PHL P 7 (POLCALCIN) AT 1.75 ANGSTROEM

Authors :   P. Verdino, K. Westritschnig, R. Valenta, W. Keller

Date :   30 Oct 01 (Deposition) - 30 Apr 03 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   1.75

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

Keywords :   Pollen Allergen, Calcium-Binding, Ef-Hand, Cross-Reactivity (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   P. Verdino, K. Westritschnig, R. Valenta, W. Keller
The Cross-Reactive Calcium-Binding Pollen Allergen, Phl P 7, Reveals A Novel Dimer Assembly
Embo J. V. 21 5007 2002
PubMed-ID: 12356717 | Reference-DOI: 10.1093/EMBOJ/CDF526
(for further references see the PDB file header)

Molecule 1 - POLCALCIN PHL P 7
	Chains	:	A, B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI BL21(DE3)
	Expression System Plasmid	:	PET 17B
	Expression System Strain	:	BL 21 (DE 3)
	Expression System Taxid	:	469008
	Expression System Vector Type	:	PLASMID
	Gene	:	PHLPR
	Organism Common	:	TIMOTHY GRASS
	Organism Scientific	:	PHLEUM PRATENSE
	Organism Taxid	:	15957
	Synonym	:	TIMOTHY GRASS POLLEN ALLERGEN PHL P 7, P7

		1	2
Asymmetric/Biological Unit	:	A	B

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (2, 7)

No.	Name	Count	Type	Full Name
1	CA	4	Ligand/Ion	CALCIUM ION
2	SO4	3	Ligand/Ion	SULFATE ION

Asymmetric Unit (7, 7)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	ARG A:42 , HOH A:2036 , HOH A:2044 , HOH A:2063	BINDING SITE FOR RESIDUE SO4 A 2001
2	AC2	SOFTWARE	ASP B:50 , ASP B:56 , ASN B:58	BINDING SITE FOR RESIDUE SO4 B 2002
3	AC3	SOFTWARE	LYS A:76 , ARG B:42	BINDING SITE FOR RESIDUE SO4 B 2003
4	AC4	SOFTWARE	ASP A:13 , ASN A:15 , ASP A:17 , LYS A:19 , GLU A:24 , HOH A:2002	BINDING SITE FOR RESIDUE CA A 1001
5	AC5	SOFTWARE	ASP A:48 , ASP A:50 , ASP A:52 , PHE A:54 , GLU A:59 , HOH A:2003	BINDING SITE FOR RESIDUE CA A 1002
6	AC6	SOFTWARE	ASP B:13 , ASN B:15 , ASP B:17 , LYS B:19 , GLU B:24 , HOH B:2004	BINDING SITE FOR RESIDUE CA B 1003
7	AC7	SOFTWARE	ASP B:48 , ASP B:50 , ASP B:52 , PHE B:54 , GLU B:59 , HOH B:2005	BINDING SITE FOR RESIDUE CA B 1004

(no "SS Bond" information available for 1K9U)

(no "Cis Peptide Bond" information available for 1K9U)

(no "SAP(SNP)/Variant" information available for 1K9U)

Asymmetric/Biological Unit (2, 6)

	PROSITE			UniProtKB		PDB
No.	ID	AC	Description	ID	Location	Count	Location
1	EF_HAND_2	PS50222	EF-hand calcium-binding domain profile.	POLC7_PHLPR	1-35 38-70	2	- A:38-70 B:38-70
2	EF_HAND_1	PS00018	EF-hand calcium-binding domain.	POLC7_PHLPR	13-25 48-60	4	A:13-25 B:13-25 A:48-60 B:48-60

(no "Exon" information available for 1K9U)

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
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Chain A from PDB  Type:PROTEIN  Length:76
 aligned with POLC7_PHLPR | O82040 from UniProtKB/Swiss-Prot  Length:78

    Alignment length:76
                                    12        22        32        42        52        62        72      
           POLC7_PHLPR    3 DDMERIFKRFDTNGDGKISLSELTDALRTLGSTSADEVQRMMAEIDTDGDGFIDFNEFISFCNANPGLMKDVAKVF 78
               SCOP domains d1k9ua_ A: Polcalcin phl p 7                                                 SCOP domains
               CATH domains 1k9uA00 A:3-78 EF-hand                                                       CATH domains
               Pfam domains ---------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhh.....eehhhhhhhhhhhhhh.hhhhhhhhhhhhh......eehhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) EF_HAND_2  PDB: - UniProt: 1-35  --EF_HAND_2  PDB: A:38-70          -------- PROSITE (1)
                PROSITE (2) ----------EF_HAND_1    ----------------------EF_HAND_1    ------------------ PROSITE (2)
                 Transcript ---------------------------------------------------------------------------- Transcript
                  1k9u A  3 DDMERIFKRFDTNGDGKISLSELTDALRTLGSTSADEVQRMMAEIDTDGDGFIDFNEFISFCNANPGLMKDVAKVF 78
                                    12        22        32        42        52        62        72

Chain B from PDB  Type:PROTEIN  Length:76
 aligned with POLC7_PHLPR | O82040 from UniProtKB/Swiss-Prot  Length:78

    Alignment length:76
                                    12        22        32        42        52        62        72      
           POLC7_PHLPR    3 DDMERIFKRFDTNGDGKISLSELTDALRTLGSTSADEVQRMMAEIDTDGDGFIDFNEFISFCNANPGLMKDVAKVF 78
               SCOP domains d1k9ub_ B: Polcalcin phl p 7                                                 SCOP domains
               CATH domains 1k9uB00 B:3-78 EF-hand                                                       CATH domains
               Pfam domains ---------------------------------------------------------------------------- Pfam domains
         Sec.struct. author hhhhhhhhhhh.....eehhhhhhhhhhhhh..hhhhhhhhhhhhh......eehhhhhhhhhhhhhhhhh..... Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (1) EF_HAND_2  PDB: - UniProt: 1-35  --EF_HAND_2  PDB: B:38-70          -------- PROSITE (1)
                PROSITE (2) ----------EF_HAND_1    ----------------------EF_HAND_1    ------------------ PROSITE (2)
                 Transcript ---------------------------------------------------------------------------- Transcript
                  1k9u B  3 DDMERIFKRFDTNGDGKISLSELTDALRTLGSTSADEVQRMMAEIDTDGDGFIDFNEFISFCNANPGLMKDVAKVF 78
                                    12        22        32        42        52        62        72

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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: EF Hand-like (739)

Superfamily: EF-hand (657)

Family: Polcalcin (6)

Protein domain: Polcalcin phl p 7 (4)

Timothy grass (Phleum pratense) [TaxId: 15957] (4)

1a	d1k9ua_	A:
1b	d1k9ub_	B:

Asymmetric/Biological Unit

Classes(

)

Architectures( (-)

)

Topologies( (-)

)

Homologous Superfamilies( (-)

)

Organisms( (-)

)

Class: Mainly Alpha (13335)

Architecture: Orthogonal Bundle (10391)

Topology: Recoverin; domain 1 (474)

Homologous Superfamily: EF-hand (412)

Timothy grass (Phleum pratense) (1)

1a	1k9uA00	A:3-78
1b	1k9uB00	B:3-78

(no "Pfam Domain" information available for 1K9U)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A,B (POLC7_PHLPR | O82040)

molecular function
	GO:0005509		calcium ion binding		Interacting selectively and non-covalently with calcium ions (Ca2+).
	GO:0046872		metal ion binding		Interacting selectively and non-covalently with any metal ion.

Asymmetric/Biological Unit
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	Cis Peptide Bonds
(no "Cis Peptide Bonds" information available for 1k9u)

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Description

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Chains, Units

Ligands, Modified Residues, Ions (2, 7)

Sites (7, 7)

SS Bonds (0, 0)

Cis Peptide Bonds (0, 0)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (2, 6)

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