Structure of PDB 5ifk Chain B Binding Site BS01

Receptor Information
>5ifk Chain B (length=293) Species: 284590 (Kluyveromyces lactis NRRL Y-1140) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
DINEQRALIKSAHRYISEKLEDHFSSEFLPKALVICGSGLSGISTKIADE
PKPLILSYSTIPGFGELIFGYMNGAPVVLMNGRLHSYEGHSLAETVHPIR
ALHLLGSINVLIVTNAAGGINASFKAGDLMCVYDHINFPGLCGFHPLRGA
NFDEFGPRFLATSDAYDLELRKLLFSKKKELNIERKIHEGTYSYVHGPTF
ESRAESRFLRLAGTDAVGMSTVPEVVTARHCGWRVLALSLITNECVVDPP
ASAHDENPVPIQEGKATHEEVLENSAKASKDVQELIFSVVAEI
Ligand information
Ligand IDHPA
InChIInChI=1S/C5H4N4O/c10-5-3-4(7-1-6-3)8-2-9-5/h1-2H,(H2,6,7,8,9,10)
InChIKeyFDGQSTZJBFJUBT-UHFFFAOYSA-N
SMILES
SoftwareSMILES
ACDLabs 10.04O=C1c2c(N=CN1)ncn2
OpenEye OEToolkits 1.5.0c1[nH]c2c(n1)N=CNC2=O
CACTVS 3.341O=C1NC=Nc2nc[nH]c12
FormulaC5 H4 N4 O
NameHYPOXANTHINE
ChEMBLCHEMBL1427
DrugBankDB04076
ZINCZINC000018153302
PDB chain5ifk Chain B Residue 401 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB5ifk Functional and Structural Characterization of Purine Nucleoside Phosphorylase from Kluyveromyces lactis and Its Potential Applications in Reducing Purine Content in Food
Resolution1.967 Å
Binding residue
(original residue number in PDB)		A130 G131 F213 E214 M232 N256
Binding residue
(residue number reindexed from 1)		A117 G118 F200 E201 M219 N243
Annotation score5
Enzymatic activity
Catalytic site (original residue number in PDB) S42 H98 Y100 E101 A129 M232 S233 N256 C258 H281
Catalytic site (residue number reindexed from 1) S38 H85 Y87 E88 A116 M219 S220 N243 C245 H268
Enzyme Commision number 2.4.2.1: purine-nucleoside phosphorylase.
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0004731 purine-nucleoside phosphorylase activity
GO:0016757 glycosyltransferase activity
GO:0016763 pentosyltransferase activity
Biological Process
GO:0006139 nucleobase-containing compound metabolic process
GO:0009116 nucleoside metabolic process
Cellular Component
GO:0005737 cytoplasm

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:5ifk, PDBe:5ifk, PDBj:5ifk
PDBsum5ifk
PubMed27768715
UniProtQ6CSZ6

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