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1I6O

CRYSTAL STRUCTURE OF E. COLI BETA CARBONIC ANHYDRASE (ECCA)

Functional Information from GO Data
ChainGOidnamespacecontents
A0004089molecular_functioncarbonate dehydratase activity
A0005515molecular_functionprotein binding
A0005829cellular_componentcytosol
A0008270molecular_functionzinc ion binding
A0015976biological_processcarbon utilization
A0016829molecular_functionlyase activity
A0042802molecular_functionidentical protein binding
A0046872molecular_functionmetal ion binding
A0051289biological_processprotein homotetramerization
B0004089molecular_functioncarbonate dehydratase activity
B0005515molecular_functionprotein binding
B0005829cellular_componentcytosol
B0008270molecular_functionzinc ion binding
B0015976biological_processcarbon utilization
B0016829molecular_functionlyase activity
B0042802molecular_functionidentical protein binding
B0046872molecular_functionmetal ion binding
B0051289biological_processprotein homotetramerization
Functional Information from PDB Data
site_idAC1
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN A 301
ChainResidue
ACYS42
AASP44
AHIS98
ACYS101

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE ZN B 302
ChainResidue
BCYS42
BASP44
BHIS98
BCYS101

Functional Information from PROSITE/UniProt
site_idPS00704
Number of Residues8
DetailsPROK_CO2_ANHYDRASE_1 Prokaryotic-type carbonic anhydrases signature 1. CSDSRVpA
ChainResidueDetails
ACYS42-ALA49

site_idPS00705
Number of Residues21
DetailsPROK_CO2_ANHYDRASE_2 Prokaryotic-type carbonic anhydrases signature 2. QYAVdvLevehIIIcGHygCG
ChainResidueDetails
AGLN82-GLY102

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues8
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"11316870","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1I6O","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1I6P","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues2
DetailsAnnotated By Reference To The Literature 1i6p
ChainResidueDetails
AASP44
AARG46

site_idCSA2
Number of Residues2
DetailsAnnotated By Reference To The Literature 1i6p
ChainResidueDetails
BASP44
BARG46

site_idMCSA1
Number of Residues5
DetailsM-CSA 517
ChainResidueDetails
AGLU50metal ligand
ALEU52metal ligand, proton acceptor
AGLY54electrostatic stabiliser, increase basicity
AALA106metal ligand
AGLU109metal ligand

site_idMCSA2
Number of Residues5
DetailsM-CSA 517
ChainResidueDetails
BGLU50metal ligand
BLEU52metal ligand, proton acceptor
BGLY54electrostatic stabiliser, increase basicity
BALA106metal ligand
BGLU109metal ligand

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PDB entries from 2025-07-16

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