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1XG2

Crystal structure of the complex between pectin methylesterase and its inhibitor protein

Functional Information from GO Data
ChainGOidnamespacecontents
A0030599molecular_functionpectinesterase activity
A0042545biological_processcell wall modification
B0004857molecular_functionenzyme inhibitor activity
B0005737cellular_componentcytoplasm
B0043086biological_processnegative regulation of catalytic activity
B0046910molecular_functionpectinesterase inhibitor activity
Functional Information from PROSITE/UniProt
site_idPS00503
Number of Residues10
DetailsPECTINESTERASE_2 Pectinesterase signature 2. VtGTVDFIFG
ChainResidueDetails
AVAL148-GLY157

site_idPS00800
Number of Residues20
DetailsPECTINESTERASE_1 Pectinesterase signature 1. SktryviYVKrGTYKEnveV
ChainResidueDetails
ASER29-VAL48

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues1
DetailsActive site: {"description":"Proton donor","evidences":[{"source":"PROSITE-ProRule","id":"PRU10040","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues1
DetailsActive site: {"description":"Nucleophile","evidences":[{"source":"PROSITE-ProRule","id":"PRU10040","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues4
DetailsBinding site: {"evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues1
DetailsSite: {"description":"Transition state stabilizer","evidences":[{"evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues4
DetailsAnnotated By Reference To The Literature 1gq8
ChainResidueDetails
AGLN109
AGLN131
AASP132
AASP153

242500

PDB entries from 2025-10-01

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