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5MX6

Crystal structure of H. pylori purine nucleoside phosphorylase from clinical isolate HpPNP-2

Functional Information from GO Data
ChainGOidnamespacecontents
A0003824molecular_functioncatalytic activity
A0004731molecular_functionpurine-nucleoside phosphorylase activity
A0005829cellular_componentcytosol
A0006139biological_processnucleobase-containing compound metabolic process
A0006152biological_processpurine nucleoside catabolic process
A0009116biological_processnucleoside metabolic process
A0009164biological_processnucleoside catabolic process
A0016740molecular_functiontransferase activity
A0016757molecular_functionglycosyltransferase activity
A0016763molecular_functionpentosyltransferase activity
B0003824molecular_functioncatalytic activity
B0004731molecular_functionpurine-nucleoside phosphorylase activity
B0005829cellular_componentcytosol
B0006139biological_processnucleobase-containing compound metabolic process
B0006152biological_processpurine nucleoside catabolic process
B0009116biological_processnucleoside metabolic process
B0009164biological_processnucleoside catabolic process
B0016740molecular_functiontransferase activity
B0016757molecular_functionglycosyltransferase activity
B0016763molecular_functionpentosyltransferase activity
C0003824molecular_functioncatalytic activity
C0004731molecular_functionpurine-nucleoside phosphorylase activity
C0005829cellular_componentcytosol
C0006139biological_processnucleobase-containing compound metabolic process
C0006152biological_processpurine nucleoside catabolic process
C0009116biological_processnucleoside metabolic process
C0009164biological_processnucleoside catabolic process
C0016740molecular_functiontransferase activity
C0016757molecular_functionglycosyltransferase activity
C0016763molecular_functionpentosyltransferase activity
D0003824molecular_functioncatalytic activity
D0004731molecular_functionpurine-nucleoside phosphorylase activity
D0005829cellular_componentcytosol
D0006139biological_processnucleobase-containing compound metabolic process
D0006152biological_processpurine nucleoside catabolic process
D0009116biological_processnucleoside metabolic process
D0009164biological_processnucleoside catabolic process
D0016740molecular_functiontransferase activity
D0016757molecular_functionglycosyltransferase activity
D0016763molecular_functionpentosyltransferase activity
E0003824molecular_functioncatalytic activity
E0004731molecular_functionpurine-nucleoside phosphorylase activity
E0005829cellular_componentcytosol
E0006139biological_processnucleobase-containing compound metabolic process
E0006152biological_processpurine nucleoside catabolic process
E0009116biological_processnucleoside metabolic process
E0009164biological_processnucleoside catabolic process
E0016740molecular_functiontransferase activity
E0016757molecular_functionglycosyltransferase activity
E0016763molecular_functionpentosyltransferase activity
F0003824molecular_functioncatalytic activity
F0004731molecular_functionpurine-nucleoside phosphorylase activity
F0005829cellular_componentcytosol
F0006139biological_processnucleobase-containing compound metabolic process
F0006152biological_processpurine nucleoside catabolic process
F0009116biological_processnucleoside metabolic process
F0009164biological_processnucleoside catabolic process
F0016740molecular_functiontransferase activity
F0016757molecular_functionglycosyltransferase activity
F0016763molecular_functionpentosyltransferase activity
Functional Information from PDB Data
site_idAC1
Number of Residues6
Detailsbinding site for residue SO4 A 301
ChainResidue
ACYS19
AGLY20
AARG87
AGLY89
ATHR90
DARG43

site_idAC2
Number of Residues8
Detailsbinding site for residue HPA A 302
ChainResidue
APHE159
AILE178
AGLU179
AASP204
ALEU206
ATHR90
ACYS91
AGLY92

site_idAC3
Number of Residues4
Detailsbinding site for residue SO4 A 303
ChainResidue
AGLN34
AASP35
AALA36
AHOH457

site_idAC4
Number of Residues3
Detailsbinding site for residue ACT A 304
ChainResidue
ALYS78
AGLU191
DPHE162

site_idAC5
Number of Residues11
Detailsbinding site for residue PEG A 305
ChainResidue
AASN122
AHOH441
AHOH454
BASN122
CASN122
CHOH416
DASN122
EASN122
EHOH417
FASN122
FHOH405

site_idAC6
Number of Residues8
Detailsbinding site for residue SO4 B 301
ChainResidue
BCYS19
BGLY20
BASP21
BARG87
BGLY89
BTHR90
BHOH402
EARG43

site_idAC7
Number of Residues4
Detailsbinding site for residue HPA B 302
ChainResidue
BTHR90
BGLY92
BPHE159
BMET180

site_idAC8
Number of Residues2
Detailsbinding site for residue PEG B 303
ChainResidue
BASN6
BGLU38

site_idAC9
Number of Residues7
Detailsbinding site for residue PO4 C 301
ChainResidue
CGLY20
CARG24
CARG87
CGLY89
CTHR90
CHOH417
FARG43

site_idAD1
Number of Residues8
Detailsbinding site for residue HPA C 302
ChainResidue
CTHR90
CCYS91
CGLY92
CPHE159
CILE178
CGLU179
CASP204
CLEU206

site_idAD2
Number of Residues6
Detailsbinding site for residue SO4 C 303
ChainResidue
ATYR138
ALYS142
CLEU33
CGLN34
CASP35
CHOH449

site_idAD3
Number of Residues3
Detailsbinding site for residue PEG C 304
ChainResidue
CASN6
CGLU38
CILE39

site_idAD4
Number of Residues8
Detailsbinding site for residue SO4 D 301
ChainResidue
AARG43
DGLY20
DASP21
DARG87
DGLY89
DTHR90
DHOH403
DHOH424

site_idAD5
Number of Residues4
Detailsbinding site for residue HPA D 302
ChainResidue
DTHR90
DGLY92
DLEU206
DHOH460

site_idAD6
Number of Residues5
Detailsbinding site for residue SO4 D 303
ChainResidue
CLYS97
DLEU33
DGLN34
DASP35
DHOH402

site_idAD7
Number of Residues3
Detailsbinding site for residue PEG D 304
ChainResidue
DASN6
DGLU38
DILE39

site_idAD8
Number of Residues8
Detailsbinding site for residue SO4 E 301
ChainResidue
BARG43
ECYS19
EGLY20
EASP21
EARG24
EARG87
EGLY89
ETHR90

site_idAD9
Number of Residues5
Detailsbinding site for residue HPA E 302
ChainResidue
EGLY92
EPHE159
EILE178
ELEU206
ETHR90

site_idAE1
Number of Residues3
Detailsbinding site for residue PEG E 303
ChainResidue
EASN6
EGLU38
EILE39

site_idAE2
Number of Residues8
Detailsbinding site for residue SO4 F 301
ChainResidue
CARG43
FGLY20
FASP21
FARG24
FARG87
FGLY89
FTHR90
FHOH402

site_idAE3
Number of Residues6
Detailsbinding site for residue HPA F 302
ChainResidue
FTHR90
FCYS91
FGLY92
FPHE159
FLEU206
FHOH441

site_idAE4
Number of Residues4
Detailsbinding site for residue SO4 F 303
ChainResidue
ALYS209
AHOH413
FGLN34
FASP35

site_idAE5
Number of Residues5
Detailsbinding site for residue ACT F 304
ChainResidue
CTYR160
CSER161
CPHE162
FLYS78
FGLU191

Functional Information from PROSITE/UniProt
site_idPS01232
Number of Residues16
DetailsPNP_UDP_1 Purine and other phosphorylases family 1 signature. GhGMGiAScTIyvtEL
ChainResidueDetails
AGLY61-LEU76

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI2
Number of Residues6
DetailsActive site: {"description":"Proton donor","evidences":[{"source":"HAMAP-Rule","id":"MF_01627","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues12
DetailsBinding site: {"evidences":[{"source":"UniProtKB","id":"P50389","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues48
DetailsBinding site: {"description":"in other chain","evidences":[{"source":"UniProtKB","id":"P50389","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues6
DetailsSite: {"description":"Important for catalytic activity","evidences":[{"source":"HAMAP-Rule","id":"MF_01627","evidenceCode":"ECO:0000255"}]}
ChainResidueDetails

249697

PDB entries from 2026-02-25

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