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6BNJ

Human hypoxanthine guanine phosphoribosyltransferase in complex with [3R,4R]-4-guanin-9-yl-3-((R)-2-hydroxy-2-phosphonoethyl)oxy-1-N-(phosphonopropionyl)pyrrolidine

Functional Information from GO Data
ChainGOidnamespacecontents
A0000166molecular_functionnucleotide binding
A0000287molecular_functionmagnesium ion binding
A0004422molecular_functionhypoxanthine phosphoribosyltransferase activity
A0005515molecular_functionprotein binding
A0005737cellular_componentcytoplasm
A0005829cellular_componentcytosol
A0006164biological_processpurine nucleotide biosynthetic process
A0006166biological_processpurine ribonucleoside salvage
A0006178biological_processguanine salvage
A0016740molecular_functiontransferase activity
A0016757molecular_functionglycosyltransferase activity
A0032263biological_processGMP salvage
A0032264biological_processIMP salvage
A0042802molecular_functionidentical protein binding
A0043103biological_processhypoxanthine salvage
A0044209biological_processAMP salvage
A0045964biological_processpositive regulation of dopamine metabolic process
A0046038biological_processGMP catabolic process
A0046040biological_processIMP metabolic process
A0046100biological_processhypoxanthine metabolic process
A0046872molecular_functionmetal ion binding
A0051289biological_processprotein homotetramerization
A0052657molecular_functionguanine phosphoribosyltransferase activity
A0070062cellular_componentextracellular exosome
B0000166molecular_functionnucleotide binding
B0000287molecular_functionmagnesium ion binding
B0004422molecular_functionhypoxanthine phosphoribosyltransferase activity
B0005515molecular_functionprotein binding
B0005737cellular_componentcytoplasm
B0005829cellular_componentcytosol
B0006164biological_processpurine nucleotide biosynthetic process
B0006166biological_processpurine ribonucleoside salvage
B0006178biological_processguanine salvage
B0016740molecular_functiontransferase activity
B0016757molecular_functionglycosyltransferase activity
B0032263biological_processGMP salvage
B0032264biological_processIMP salvage
B0042802molecular_functionidentical protein binding
B0043103biological_processhypoxanthine salvage
B0044209biological_processAMP salvage
B0045964biological_processpositive regulation of dopamine metabolic process
B0046038biological_processGMP catabolic process
B0046040biological_processIMP metabolic process
B0046100biological_processhypoxanthine metabolic process
B0046872molecular_functionmetal ion binding
B0051289biological_processprotein homotetramerization
B0052657molecular_functionguanine phosphoribosyltransferase activity
B0070062cellular_componentextracellular exosome
C0000166molecular_functionnucleotide binding
C0000287molecular_functionmagnesium ion binding
C0004422molecular_functionhypoxanthine phosphoribosyltransferase activity
C0005515molecular_functionprotein binding
C0005737cellular_componentcytoplasm
C0005829cellular_componentcytosol
C0006164biological_processpurine nucleotide biosynthetic process
C0006166biological_processpurine ribonucleoside salvage
C0006178biological_processguanine salvage
C0016740molecular_functiontransferase activity
C0016757molecular_functionglycosyltransferase activity
C0032263biological_processGMP salvage
C0032264biological_processIMP salvage
C0042802molecular_functionidentical protein binding
C0043103biological_processhypoxanthine salvage
C0044209biological_processAMP salvage
C0045964biological_processpositive regulation of dopamine metabolic process
C0046038biological_processGMP catabolic process
C0046040biological_processIMP metabolic process
C0046100biological_processhypoxanthine metabolic process
C0046872molecular_functionmetal ion binding
C0051289biological_processprotein homotetramerization
C0052657molecular_functionguanine phosphoribosyltransferase activity
C0070062cellular_componentextracellular exosome
D0000166molecular_functionnucleotide binding
D0000287molecular_functionmagnesium ion binding
D0004422molecular_functionhypoxanthine phosphoribosyltransferase activity
D0005515molecular_functionprotein binding
D0005737cellular_componentcytoplasm
D0005829cellular_componentcytosol
D0006164biological_processpurine nucleotide biosynthetic process
D0006166biological_processpurine ribonucleoside salvage
D0006178biological_processguanine salvage
D0016740molecular_functiontransferase activity
D0016757molecular_functionglycosyltransferase activity
D0032263biological_processGMP salvage
D0032264biological_processIMP salvage
D0042802molecular_functionidentical protein binding
D0043103biological_processhypoxanthine salvage
D0044209biological_processAMP salvage
D0045964biological_processpositive regulation of dopamine metabolic process
D0046038biological_processGMP catabolic process
D0046040biological_processIMP metabolic process
D0046100biological_processhypoxanthine metabolic process
D0046872molecular_functionmetal ion binding
D0051289biological_processprotein homotetramerization
D0052657molecular_functionguanine phosphoribosyltransferase activity
D0070062cellular_componentextracellular exosome
Functional Information from PDB Data
site_idAC1
Number of Residues28
Detailsbinding site for residue WPG A 301
ChainResidue
ALYS68
ALYS185
APHE186
AVAL187
ALEU192
AASP193
AARG199
AMG303
AHOH408
AHOH421
AHOH436
AGLY69
AHOH439
AHOH443
AHOH456
AHOH473
AHOH478
AHOH479
AHOH488
AHOH490
AHOH493
AILE135
AASP137
ATHR138
AGLY139
ALYS140
ATHR141
ALYS165

site_idAC2
Number of Residues6
Detailsbinding site for residue MG A 302
ChainResidue
AGLU133
AASP134
AHOH421
AHOH436
AHOH467
AHOH479

site_idAC3
Number of Residues5
Detailsbinding site for residue MG A 303
ChainResidue
AASP193
AWPG301
AHOH488
AHOH493
AHOH507

site_idAC4
Number of Residues26
Detailsbinding site for residue WPG B 301
ChainResidue
BLYS68
BGLY69
BILE135
BASP137
BTHR138
BGLY139
BLYS140
BTHR141
BLYS165
BLYS185
BPHE186
BVAL187
BLEU192
BASP193
BARG199
BMG302
BMG303
BHOH412
BHOH416
BHOH418
BHOH436
BHOH446
BHOH448
BHOH465
BHOH486
BHOH488

site_idAC5
Number of Residues5
Detailsbinding site for residue MG B 302
ChainResidue
BGLU133
BASP134
BWPG301
BHOH444
BHOH446

site_idAC6
Number of Residues5
Detailsbinding site for residue MG B 303
ChainResidue
BASP193
BWPG301
BHOH416
BHOH486
BHOH488

site_idAC7
Number of Residues28
Detailsbinding site for residue WPG C 301
ChainResidue
CHOH436
CHOH437
CHOH446
CHOH504
CLEU67
CLYS68
CGLY69
CILE135
CASP137
CTHR138
CGLY139
CLYS140
CTHR141
CLYS165
CLYS185
CPHE186
CVAL187
CLEU192
CASP193
CARG199
CMG303
CHOH407
CHOH424
CHOH425
CHOH426
CHOH430
CHOH433
CHOH434

site_idAC8
Number of Residues6
Detailsbinding site for residue MG C 302
ChainResidue
CGLU133
CASP134
CHOH407
CHOH423
CHOH424
CHOH446

site_idAC9
Number of Residues5
Detailsbinding site for residue MG C 303
ChainResidue
CASP193
CWPG301
CHOH425
CHOH437
CHOH495

site_idAD1
Number of Residues28
Detailsbinding site for residue WPG D 301
ChainResidue
DLYS68
DGLY69
DASP137
DTHR138
DGLY139
DLYS140
DTHR141
DLYS165
DLYS185
DPHE186
DVAL187
DLEU192
DASP193
DARG199
DMG303
DHOH408
DHOH416
DHOH418
DHOH423
DHOH442
DHOH443
DHOH446
DHOH465
DHOH472
DHOH475
DHOH483
DHOH484
DHOH488

site_idAD2
Number of Residues6
Detailsbinding site for residue MG D 302
ChainResidue
DGLU133
DASP134
DHOH423
DHOH442
DHOH443
DHOH468

site_idAD3
Number of Residues5
Detailsbinding site for residue MG D 303
ChainResidue
DASP193
DWPG301
DHOH416
DHOH475
DHOH483

Functional Information from PROSITE/UniProt
site_idPS00103
Number of Residues13
DetailsPUR_PYR_PR_TRANSFER Purine/pyrimidine phosphoribosyl transferases signature. VLIVEDIIDTGkT
ChainResidueDetails
AVAL129-THR141

Functional Information from SwissProt/UniProt
site_idSWS_FT_FI1
Number of Residues4
DetailsActive site: {"description":"Proton acceptor","evidences":[{"evidenceCode":"ECO:0000305"}]}
ChainResidueDetails

site_idSWS_FT_FI2
Number of Residues48
DetailsBinding site: {"evidences":[{"source":"PubMed","id":"8044844","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

site_idSWS_FT_FI3
Number of Residues4
DetailsBinding site: {}
ChainResidueDetails

site_idSWS_FT_FI4
Number of Residues4
DetailsModified residue: {"description":"Phosphothreonine","evidences":[{"source":"UniProtKB","id":"P27605","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI5
Number of Residues2
DetailsModified residue: {"description":"N6-acetyllysine","evidences":[{"source":"UniProtKB","id":"P00493","evidenceCode":"ECO:0000250"}]}
ChainResidueDetails

site_idSWS_FT_FI6
Number of Residues6
DetailsCross-link: {"description":"Glycyl lysine isopeptide (Lys-Gly) (interchain with G-Cter in SUMO2); alternate","evidences":[{"source":"PubMed","id":"28112733","evidenceCode":"ECO:0007744"}]}
ChainResidueDetails

site_idSWS_FT_FI7
Number of Residues1
DetailsModified residue: {"description":"N-acetylalanine","evidences":[{"source":"PubMed","id":"7107641","evidenceCode":"ECO:0000269"}]}
ChainResidueDetails

Catalytic Information from CSA
site_idMCSA1
Number of Residues5
DetailsM-CSA 48
ChainResidueDetails
AGLU133attractive charge-charge interaction, electrostatic stabiliser
AASP134attractive charge-charge interaction, electrostatic stabiliser
AASP137hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor
APHE186electrostatic stabiliser
AARG199electrostatic stabiliser

site_idMCSA2
Number of Residues5
DetailsM-CSA 48
ChainResidueDetails
BGLU133attractive charge-charge interaction, electrostatic stabiliser
BASP134attractive charge-charge interaction, electrostatic stabiliser
BASP137hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor
BPHE186electrostatic stabiliser
BARG199electrostatic stabiliser

site_idMCSA3
Number of Residues5
DetailsM-CSA 48
ChainResidueDetails
CGLU133attractive charge-charge interaction, electrostatic stabiliser
CASP134attractive charge-charge interaction, electrostatic stabiliser
CASP137hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor
CPHE186electrostatic stabiliser
CARG199electrostatic stabiliser

site_idMCSA4
Number of Residues5
DetailsM-CSA 48
ChainResidueDetails
DGLU133attractive charge-charge interaction, electrostatic stabiliser
DASP134attractive charge-charge interaction, electrostatic stabiliser
DASP137hydrogen bond acceptor, hydrogen bond donor, proton acceptor, proton donor
DPHE186electrostatic stabiliser
DARG199electrostatic stabiliser

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PDB entries from 2026-01-21

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