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3FUC

Recombinant calf purine nucleoside phosphorylase in a binary complex with multisubstrate analogue inhibitor 9-(5',5'-difluoro-5'-phosphonopentyl)-9-deazaguanine structure in a new space group with one full trimer in the asymmetric unit

Functional Information from GO Data
ChainGOidnamespacecontents
A0003824molecular_functioncatalytic activity
A0004731molecular_functionpurine-nucleoside phosphorylase activity
A0005737cellular_componentcytoplasm
A0005829cellular_componentcytosol
A0006139biological_processnucleobase-containing compound metabolic process
A0006166biological_processpurine ribonucleoside salvage
A0009116biological_processnucleoside metabolic process
A0016740molecular_functiontransferase activity
A0016757molecular_functionglycosyltransferase activity
A0016763molecular_functionpentosyltransferase activity
A0047975molecular_functionguanosine phosphorylase activity
B0003824molecular_functioncatalytic activity
B0004731molecular_functionpurine-nucleoside phosphorylase activity
B0005737cellular_componentcytoplasm
B0005829cellular_componentcytosol
B0006139biological_processnucleobase-containing compound metabolic process
B0006166biological_processpurine ribonucleoside salvage
B0009116biological_processnucleoside metabolic process
B0016740molecular_functiontransferase activity
B0016757molecular_functionglycosyltransferase activity
B0016763molecular_functionpentosyltransferase activity
B0047975molecular_functionguanosine phosphorylase activity
C0003824molecular_functioncatalytic activity
C0004731molecular_functionpurine-nucleoside phosphorylase activity
C0005737cellular_componentcytoplasm
C0005829cellular_componentcytosol
C0006139biological_processnucleobase-containing compound metabolic process
C0006166biological_processpurine ribonucleoside salvage
C0009116biological_processnucleoside metabolic process
C0016740molecular_functiontransferase activity
C0016757molecular_functionglycosyltransferase activity
C0016763molecular_functionpentosyltransferase activity
C0047975molecular_functionguanosine phosphorylase activity
Functional Information from PDB Data
site_idAC1
Number of Residues21
DetailsBINDING SITE FOR RESIDUE 9D9 A 301
ChainResidue
ASER33
APHE200
AGLU201
AVAL217
AGLY218
AMET219
ASER220
ATHR242
AASN243
AVAL245
AHOH428
AARG84
AHOH440
AHOH556
AHIS86
ATYR88
AASN115
AALA116
AALA117
AGLY118
ALEU195

site_idAC2
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG A 302
ChainResidue
AGLU186
AHOH425
AHOH503
AHOH549
BGLU186
BHOH626

site_idAC3
Number of Residues20
DetailsBINDING SITE FOR RESIDUE 9D9 B 301
ChainResidue
BSER33
BARG84
BHIS86
BTYR88
BASN115
BALA116
BALA117
BGLY118
BLEU195
BPHE200
BGLU201
BVAL217
BGLY218
BMET219
BSER220
BTHR242
BASN243
BHOH510
BHOH533
BHOH619

site_idAC4
Number of Residues21
DetailsBINDING SITE FOR RESIDUE 9D9 C 301
ChainResidue
CSER33
CARG84
CHIS86
CTYR88
CASN115
CALA116
CALA117
CGLY118
CLEU195
CPHE200
CGLU201
CVAL217
CGLY218
CMET219
CSER220
CTHR242
CASN243
CVAL245
CHOH401
CHOH486
CHOH493

site_idAC5
Number of Residues8
DetailsBINDING SITE FOR RESIDUE MG C 302
ChainResidue
CASP9
CASP9
CHOH407
CHOH407
CHOH511
CHOH511
CHOH530
CHOH530

site_idAC6
Number of Residues6
DetailsBINDING SITE FOR RESIDUE MG C 303
ChainResidue
CGLU186
CGLU186
CHOH504
CHOH504
CHOH505
CHOH505

site_idAC7
Number of Residues2
DetailsBINDING SITE FOR RESIDUE AZI C 304
ChainResidue
CPRO92
CLYS95

Functional Information from PROSITE/UniProt
site_idPS01240
Number of Residues42
DetailsPNP_MTAP_2 Purine and other phosphorylases family 2 signature. VmmqGrfHmYegypFwkvTfpVrVfrllGvet.LVvtNAaGGL
ChainResidueDetails
AVAL79-LEU120

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues3
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"9585525","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1A9O","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9P","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9S","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9T","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"3PNP","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4PNP","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues12
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"9585525","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1A9O","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9P","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9Q","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9R","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9S","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9T","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"3PNP","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"4PNP","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues9
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"9585525","evidenceCode":"ECO:0000269"},{"source":"PDB","id":"1A9P","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9S","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9T","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues6
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"9585525","evidenceCode":"ECO:0000269"},{"source":"PubMed","id":"9020983","evidenceCode":"ECO:0000305"},{"source":"PDB","id":"1A9P","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9Q","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1A9R","evidenceCode":"ECO:0007744"},{"source":"PDB","id":"1VFN","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues3
DetailsSite: {"description":"Important for substrate specificity","evidences":[{"source":"UniProtKB","id":"P00491","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues3
DetailsModified residue: {"description":"Phosphoserine","evidences":[{"source":"UniProtKB","id":"P00491","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idCSA1
Number of Residues3
DetailsAnnotated By Reference To The Literature 1cg6
ChainResidueDetails
AASN243
AHIS86
AGLU89

site_idCSA2
Number of Residues3
DetailsAnnotated By Reference To The Literature 1cg6
ChainResidueDetails
BASN243
BHIS86
BGLU89

site_idCSA3
Number of Residues3
DetailsAnnotated By Reference To The Literature 1cg6
ChainResidueDetails
CASN243
CHIS86
CGLU89

site_idCSA4
Number of Residues2
DetailsAnnotated By Reference To The Literature 1cg6
ChainResidueDetails
AASN243
AASP248

site_idCSA5
Number of Residues2
DetailsAnnotated By Reference To The Literature 1cg6
ChainResidueDetails
BASN243
BASP248

site_idCSA6
Number of Residues2
DetailsAnnotated By Reference To The Literature 1cg6
ChainResidueDetails
CASN243
CASP248

246704

PDB entries from 2025-12-24

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