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Title :   THE CRYSTAL STRUCTURE OF THE SECRETED DIMERIC FORM OF THE HEMOPHORE HASA REVEALS A DOMAIN SWAPPING WITH AN EXCHANGED HEME LIGAND

Authors :   M. Czjzek, S. Letoffe, C. Wandersman, M. Delepierre, A. Lecroisey, N. Izadi-Pruneyre

Date :   18 May 06 (Deposition) - 26 May 06 (Release) - 24 Feb 09 (Revision)

Method :   X-RAY DIFFRACTION

Resolution :   2.30

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

Keywords :   Domain Swapping, Transport Protein, Heme, Iron, Dimeric Form, Metal-Binding (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )

Reference :   M. Czjzek, S. Letoffe, C. Wandersman, M. Delepierre, A. Lecroisey, N. Izadi-Pruneyre
The Crystal Structure Of The Secreted Dimeric Form Of The Hemophore Hasa Reveals A Domain Swapping With An Exchanged Heme Ligand
J. Mol. Biol. V. 365 1176 2007
PubMed-ID: 17113104 | Reference-DOI: 10.1016/J.JMB.2006.10.063

Molecule 1 - HEMOPHORE HASA
	Cell	:	SECRETED
	Chains	:	A, B
	Engineered	:	YES
	Expression System	:	ESCHERICHIA COLI
	Expression System Plasmid	:	PSYC34PAM
	Expression System Strain	:	STRAIN POP3
	Expression System Taxid	:	562
	Organism Scientific	:	SERRATIA MARCESCENS
	Organism Taxid	:	615
	Other Details	:	H32A, Y75B, H32B AND Y75A ARE LIGANDS TO THE HEME IRONS HEM200A AND HEM200B RESPECTIVELY
	Synonym	:	HEME BINDING PROTEIN HASA, HEME ACQUISITION SYSTEM PROTEIN A

		1	2
Asymmetric/Biological Unit	:	A	B

Summary Information (see also Sequences/Alignments below)

Asymmetric/Biological Unit (2, 4)

No.	Name	Count	Type	Full Name
1	HEM	2	Ligand/Ion	PROTOPORPHYRIN IX CONTAINING FE
2	PO4	2	Ligand/Ion	PHOSPHATE ION

Asymmetric Unit (4, 4)

No.	Name	Evidence	Residues	Description
1	AC1	SOFTWARE	PHE A:78 , HIS A:83 , ASP A:167 , HEM A:1175 , HOH A:2077 , THR B:103	BINDING SITE FOR RESIDUE PO4 A1176
2	AC2	SOFTWARE	THR A:103 , PHE B:78 , ALA B:82 , HIS B:83 , ASP B:167 , HEM B:1175	BINDING SITE FOR RESIDUE PO4 B1176
3	AC3	SOFTWARE	TYR A:55 , TYR A:75 , PHE A:78 , HIS A:83 , HIS A:128 , TYR A:137 , PO4 A:1176 , HOH A:2076 , HIS B:32 , THR B:33 , ASN B:34 , GLY B:35 , VAL B:37 , SER B:42 , PHE B:45 , HOH B:2003 , HOH B:2018	BINDING SITE FOR RESIDUE HEM A1175
4	AC4	SOFTWARE	HIS A:32 , ASN A:34 , GLY A:35 , VAL A:37 , SER A:42 , PHE A:45 , HOH A:2020 , TYR B:55 , TYR B:75 , PHE B:78 , HIS B:83 , LEU B:85 , TYR B:137 , PO4 B:1176 , HOH B:2071	BINDING SITE FOR RESIDUE HEM B1175

(no "SS Bond" information available for 2CN4)

Asymmetric/Biological Unit

No.	Residues
1	Glu A:80	-	Pro A:81
2	Glu B:80	-	Pro B:81

(no "SAP(SNP)/Variant" information available for 2CN4)

(no "PROSITE Motif" information available for 2CN4)

(no "Exon" information available for 2CN4)

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:173
 aligned with HASA_SERMA | Q54450 from UniProtKB/Swiss-Prot  Length:188

    Alignment length:173
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171   
           HASA_SERMA     2 AFSVNYDSSFGGYSIHDYLGQWASTFGDVNHTNGNVTDANSGGFYGGSLSGSQYAISSTANQVTAFVAGGNLTYTLFNEPAHTLYGQLDSLSFGDGLSGGDTSPYSIQVPDVSFGGLNLSSLQAQGHDGVVHQVVYGLMSGDTGALETALNGILDDYGLSVNSTFDQVAAATA 174
               SCOP domains d2cn4a_ A: automated matches                                                                                                                                                  SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eeee.hhhh..hhhhhhhhhhhhhh...............eee...eeeeeeeee......eeeeeeeeeee.........eeeeeeeeeeeeeee.......eeeeeeeeee...eeehhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhh.....hhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2cn4 A   2 AFSVNYDSSFGGYSIHDYLGQWASTFGDVNHTNGNVTDANSGGFYGGSLSGSQYAISSTANQVTAFVAGGNLTYTLFNEPAHTLYGQLDSLSFGDGLSGGDTSPYSIQVPDVSFGGLNLSSLQAQGHDGVVHQVVYGLMSGDTGALETALNGILDDYGLSVNSTFDQVAAATA 174
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171

Chain B from PDB  Type:PROTEIN  Length:173
 aligned with HASA_SERMA | Q54450 from UniProtKB/Swiss-Prot  Length:188

    Alignment length:173
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171   
           HASA_SERMA     2 AFSVNYDSSFGGYSIHDYLGQWASTFGDVNHTNGNVTDANSGGFYGGSLSGSQYAISSTANQVTAFVAGGNLTYTLFNEPAHTLYGQLDSLSFGDGLSGGDTSPYSIQVPDVSFGGLNLSSLQAQGHDGVVHQVVYGLMSGDTGALETALNGILDDYGLSVNSTFDQVAAATA 174
               SCOP domains d2cn4b_ B: automated matches                                                                                                                                                  SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eeee.hhhh..hhhhhhhhhhhhhh...............eee...eeeeeeeee......eeeeeeeeeee.........eeeeeeeeeeeeeee.......eeeeeeeeee...eeehhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhh.......hhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2cn4 B   2 AFSVNYDSSFGGYSIHDYLGQWASTFGDVNHTNGNVTDANSGGFYGGSLSGSQYAISSTANQVTAFVAGGNLTYTLFNEPAHTLYGQLDSLSFGDGLSGGDTSPYSIQVPDVSFGGLNLSSLQAQGHDGVVHQVVYGLMSGDTGALETALNGILDDYGLSVNSTFDQVAAATA 174
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171

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/Biological Unit

Classes(

)

Folds(

)

Superfamilies( (-)

)

Families(

)

Protein Domains( (-)

)

Organisms( (-)

)

Class: Alpha and beta proteins (a+b) (23004)

Fold: Heme-binding protein A (HasA) (12)

Superfamily: Heme-binding protein A (HasA) (12)

Family: Heme-binding protein A (HasA) (8)

Protein domain: automated matches (2)

Serratia marcescens [TaxId: 615] (2)

1a	d2cn4a_	A:
1b	d2cn4b_	B:

(no "CATH Domain" information available for 2CN4)

(no "Pfam Domain" information available for 2CN4)

Asymmetric/Biological Unit(hide GO term definitions)

Chain A,B (HASA_SERMA | Q54450)

molecular function
	GO:0046872	metal ion binding	Interacting selectively and non-covalently with any metal ion.
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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	Cis Peptide Bonds
		Glu A:80 - Pro A:81	[ RasMol ]
		Glu B:80 - Pro B:81	[ RasMol ]

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	2cn4
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	HASA_SERMA \| Q54450
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UniProtKB/Swiss-Prot
	HASA_SERMA \| Q54450	:	1b2v 1dk0 1dkh 1ybj 2uyd 3csl 3csn 3ddr 5c58

1b2v	HEME-BINDING PROTEIN A
1dk0	CRYSTAL STRUCTURE OF THE HEMOPHORE HASA FROM SERRATIA MARCESCENS CRYSTAL FORM P2(1), PH8
1dkh	CRYSTAL STRUCTURE OF THE HEMOPHORE HASA, PH 6.5
1ybj	STRUCTURAL AND DYNAMICS STUDIES OF BOTH APO AND HOLO FORMSOF THE HEMOPHORE HASA

Description

Compounds

Structural Features

Chains, Units

Ligands, Modified Residues, Ions (2, 4)

Sites (4, 4)

SS Bonds (0, 0)

Cis Peptide Bonds (2, 2)

Sequence-Structure Mapping

SAPs(SNPs)/Variants (0, 0)

PROSITE Motifs (0, 0)

Exons (0, 0)

Sequences/Alignments

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SCOP Domains (1, 2)

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Gene Ontology (2, 2)

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