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2CN4

The crystal structure of the secreted dimeric form of the hemophore HasA reveals a domain swapping with an exchanged heme ligand

Functional Information from GO Data
ChainGOidnamespacecontents
A0005515molecular_functionprotein binding
A0005576cellular_componentextracellular region
A0046872molecular_functionmetal ion binding
B0005515molecular_functionprotein binding
B0005576cellular_componentextracellular region
B0046872molecular_functionmetal ion binding
Functional Information from PDB Data
site_idAC1
Number of Residues6
DetailsBINDING SITE FOR RESIDUE PO4 A1176
ChainResidue
APHE78
AHIS83
AASP167
AHEM1175
AHOH2077
BTHR103

site_idAC2
Number of Residues6
DetailsBINDING SITE FOR RESIDUE PO4 B1176
ChainResidue
BHIS83
BASP167
BHEM1175
ATHR103
BPHE78
BALA82

site_idAC3
Number of Residues17
DetailsBINDING SITE FOR RESIDUE HEM A1175
ChainResidue
ATYR55
ATYR75
APHE78
AHIS83
AHIS128
ATYR137
APO41176
AHOH2076
BHIS32
BTHR33
BASN34
BGLY35
BVAL37
BSER42
BPHE45
BHOH2003
BHOH2018

site_idAC4
Number of Residues15
DetailsBINDING SITE FOR RESIDUE HEM B1175
ChainResidue
AHIS32
AASN34
AGLY35
AVAL37
ASER42
APHE45
AHOH2020
BTYR55
BTYR75
BPHE78
BHIS83
BLEU85
BTYR137
BPO41176
BHOH2071

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues4
DetailsBINDING: axial binding residue
ChainResidueDetails
AHIS32
ATYR75
BHIS32
BTYR75

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PDB entries from 2025-06-11

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