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1V3Q

Structure of human PNP complexed with DDI

Functional Information from GO Data
ChainGOidnamespacecontents
E0000255biological_processallantoin metabolic process
E0001882molecular_functionnucleoside binding
E0002060molecular_functionpurine nucleobase binding
E0003824molecular_functioncatalytic activity
E0004731molecular_functionpurine-nucleoside phosphorylase activity
E0005515molecular_functionprotein binding
E0005576cellular_componentextracellular region
E0005737cellular_componentcytoplasm
E0005829cellular_componentcytosol
E0006139biological_processnucleobase-containing compound metabolic process
E0006148biological_processinosine catabolic process
E0006149biological_processdeoxyinosine catabolic process
E0006157biological_processdeoxyadenosine catabolic process
E0006166biological_processpurine ribonucleoside salvage
E0006204biological_processIMP catabolic process
E0006738biological_processnicotinamide riboside catabolic process
E0006955biological_processimmune response
E0009116biological_processnucleoside metabolic process
E0009165biological_processnucleotide biosynthetic process
E0009410biological_processresponse to xenobiotic stimulus
E0016740molecular_functiontransferase activity
E0016757molecular_functionglycosyltransferase activity
E0016763molecular_functionpentosyltransferase activity
E0032743biological_processpositive regulation of interleukin-2 production
E0034418biological_processurate biosynthetic process
E0034774cellular_componentsecretory granule lumen
E0042102biological_processpositive regulation of T cell proliferation
E0042301molecular_functionphosphate ion binding
E0042802molecular_functionidentical protein binding
E0043101biological_processpurine-containing compound salvage
E0046059biological_processdAMP catabolic process
E0046638biological_processpositive regulation of alpha-beta T cell differentiation
E0047975molecular_functionguanosine phosphorylase activity
E0070062cellular_componentextracellular exosome
E1904813cellular_componentficolin-1-rich granule lumen
Functional Information from PDB Data
site_idAC1
Number of Residues3
DetailsBINDING SITE FOR RESIDUE SO4 E 291
ChainResidue
EPRO92
EARG148
EHOH321

site_idAC2
Number of Residues4
DetailsBINDING SITE FOR RESIDUE SO4 E 292
ChainResidue
EGLY34
EGLY36
EALA65
EGLN82

site_idAC3
Number of Residues8
DetailsBINDING SITE FOR RESIDUE SO4 E 293
ChainResidue
EARG84
EHIS86
EASN115
EALA116
ESER220
EHOH308
EGLY32
ESER33

site_idAC4
Number of Residues10
DetailsBINDING SITE FOR RESIDUE 2DI E 290
ChainResidue
EGLY118
EPHE159
EPHE200
EGLU201
EVAL217
EMET219
EASN243
EVAL245
EHIS257
EHOH308

Functional Information from PROSITE/UniProt
site_idPS01240
Number of Residues42
DetailsPNP_MTAP_2 Purine and other phosphorylases family 2 signature. VmmqGrfHmYegypLwkvTfpVrVfhllGvdt.LVvtNAaGGL
ChainResidueDetails
EVAL79-LEU120

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues1
DetailsBINDING: BINDING => ECO:0000269|PubMed:23438750, ECO:0000305|PubMed:14706628, ECO:0000305|PubMed:1763067, ECO:0007744|PDB:1RCT, ECO:0007744|PDB:1ULA, ECO:0007744|PDB:1ULB, ECO:0007744|PDB:4EAR, ECO:0007744|PDB:4EB8, ECO:0007744|PDB:4GKA
ChainResidueDetails
ESER33

site_idSWS_FT_FI2
Number of Residues1
DetailsBINDING: BINDING => ECO:0000250|UniProtKB:P55859
ChainResidueDetails
EHIS64

site_idSWS_FT_FI3
Number of Residues1
DetailsBINDING: BINDING => ECO:0000269|PubMed:23438750, ECO:0000305|PubMed:14706628, ECO:0000305|PubMed:1763067, ECO:0007744|PDB:1RCT, ECO:0007744|PDB:1ULA, ECO:0007744|PDB:1ULB, ECO:0007744|PDB:1V3Q, ECO:0007744|PDB:4EAR, ECO:0007744|PDB:4EB8, ECO:0007744|PDB:4GKA
ChainResidueDetails
EARG84

site_idSWS_FT_FI4
Number of Residues1
DetailsBINDING: BINDING => ECO:0000269|PubMed:14706628, ECO:0000269|PubMed:23438750, ECO:0007744|PDB:1RCT, ECO:0007744|PDB:4EAR, ECO:0007744|PDB:4EB8
ChainResidueDetails
ETYR88

site_idSWS_FT_FI5
Number of Residues4
DetailsBINDING: BINDING => ECO:0000269|PubMed:14706628, ECO:0000269|PubMed:23438750, ECO:0000305|PubMed:1763067, ECO:0007744|PDB:1RCT, ECO:0007744|PDB:1ULB, ECO:0007744|PDB:4EAR, ECO:0007744|PDB:4EB8, ECO:0007744|PDB:4GKA
ChainResidueDetails
EALA116
EGLU201
ESER220
EASN243

site_idSWS_FT_FI6
Number of Residues2
DetailsBINDING: BINDING => ECO:0000269|PubMed:14706628, ECO:0007744|PDB:1RCT
ChainResidueDetails
EMET219
EHIS257

site_idSWS_FT_FI7
Number of Residues1
DetailsSITE: Important for substrate specificity => ECO:0000269|PubMed:9305964
ChainResidueDetails
EASN243

site_idSWS_FT_FI8
Number of Residues1
DetailsMOD_RES: Phosphoserine => ECO:0007744|PubMed:23186163
ChainResidueDetails
ESER251

Catalytic Information from CSA
site_idCSA1
Number of Residues3
DetailsAnnotated By Reference To The Literature 1ula
ChainResidueDetails
EASN243
EHIS86
EGLU89

site_idMCSA1
Number of Residues10
DetailsM-CSA 17
ChainResidueDetails

237423

PDB entries from 2025-06-11

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