Structure of PDB 2a0y Chain A Binding Site BS01

Receptor Information
>2a0y Chain A (length=282) Species: 9606 (Homo sapiens) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
NGYTYEDYKNTAEWLLSHTKHRPQVAIICGSGLGGLTDKLTQAQIFDYSE
IPNFPRSTVPGHAGRLVFGFLNGRACVMMQGRFHMYEGYPLWKVTFPVRV
FHLLGVDTLVVTNAAGGLNPKFEVGDIMLIRDHINLPGFSGQNPLRGPND
ERFGDRFPAMSDAYDRTMRQRALSTWKQMGEQRELQEGTYVMVAGPSFET
VAECRVLQKLGADAVGMSTVPEVIVARHCGLRVFGFSLITNKVIMDYESL
EKANDEEVLAAGKQAAQKLEQFVSILMASIPL
Ligand information
Ligand IDDIH
InChIInChI=1S/C12H16N4O3/c17-5-8-3-16(4-9(8)18)2-7-1-13-11-10(7)14-6-15-12(11)19/h1,6,8-9,13,17-18H,2-5H2,(H,14,15,19)/p+1/t8-,9+/m1/s1
InChIKeyAFNHHLILYQEHKK-BDAKNGLRSA-O
SMILES
SoftwareSMILES
OpenEye OEToolkits 2.0.6c1c(c2c([nH]1)C(=O)NC=N2)C[NH+]3CC(C(C3)O)CO
OpenEye OEToolkits 2.0.6c1c(c2c([nH]1)C(=O)NC=N2)C[NH+]3C[C@@H]([C@H](C3)O)CO
CACTVS 3.385OC[CH]1C[NH+](C[CH]1O)Cc2c[nH]c3C(=O)NC=Nc23
CACTVS 3.385OC[C@H]1C[NH+](C[C@@H]1O)Cc2c[nH]c3C(=O)NC=Nc23
FormulaC12 H17 N4 O3
Name7-[[(3R,4R)-3-(hydroxymethyl)-4-oxidanyl-pyrrolidin-1-ium-1-yl]methyl]-3,5-dihydropyrrolo[3,2-d]pyrimidin-4-one
ChEMBL
DrugBank
ZINC
PDB chain2a0y Chain A Residue 300 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB2a0y Neighboring group participation in the transition state of human purine nucleoside phosphorylase.
Resolution2.28 Å
Binding residue
(original residue number in PDB)		Y88 A116 A117 G118 F200 E201 V217 M219 N243 D257 V260
Binding residue
(residue number reindexed from 1)		Y86 A114 A115 G116 F198 E199 V215 M217 N241 D255 V258
Annotation score1
Binding affinityMOAD: Ki=900pM
Enzymatic activity
Catalytic site (original residue number in PDB) S33 H64 H86 Y88 E89 A116 M219 S220 N243 V245 D257
Catalytic site (residue number reindexed from 1) S31 H62 H84 Y86 E87 A114 M217 S218 N241 V243 D255
Enzyme Commision number 2.4.2.1: purine-nucleoside phosphorylase.
Gene Ontology
Molecular Function
GO:0001882 nucleoside binding
GO:0002060 purine nucleobase binding
GO:0003824 catalytic activity
GO:0004731 purine-nucleoside phosphorylase activity
GO:0005515 protein binding
GO:0016757 glycosyltransferase activity
GO:0016763 pentosyltransferase activity
GO:0042301 phosphate ion binding
GO:0042802 identical protein binding
GO:0047975 guanosine phosphorylase activity
Biological Process
GO:0000255 allantoin metabolic process
GO:0006139 nucleobase-containing compound metabolic process
GO:0006148 inosine catabolic process
GO:0006149 deoxyinosine catabolic process
GO:0006157 deoxyadenosine catabolic process
GO:0006166 purine ribonucleoside salvage
GO:0006204 IMP catabolic process
GO:0006738 nicotinamide riboside catabolic process
GO:0006955 immune response
GO:0009116 nucleoside metabolic process
GO:0009165 nucleotide biosynthetic process
GO:0009410 response to xenobiotic stimulus
GO:0032743 positive regulation of interleukin-2 production
GO:0034418 urate biosynthetic process
GO:0042102 positive regulation of T cell proliferation
GO:0043101 purine-containing compound salvage
GO:0046059 dAMP catabolic process
GO:0046638 positive regulation of alpha-beta T cell differentiation
Cellular Component
GO:0005576 extracellular region
GO:0005737 cytoplasm
GO:0005829 cytosol
GO:0034774 secretory granule lumen
GO:0070062 extracellular exosome
GO:1904813 ficolin-1-rich granule lumen

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Molecular Function
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Biological Process
View graph for
Cellular Component
External links
PDB RCSB:2a0y, PDBe:2a0y, PDBj:2a0y
PDBsum2a0y
PubMed17407325
UniProtP00491|PNPH_HUMAN Purine nucleoside phosphorylase (Gene Name=PNP)

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