Structure of PDB 3enz Chain E Binding Site BS01

Receptor Information
>3enz Chain E (length=243) Species: 36329 (Plasmodium falciparum 3D7) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
NLLRHLKISKEQITPVVLVVGDPGRVDKIKVVCDSYVDLAYNREYKSVEC
HYKGQKFLCVSHGVGSAGCAVCFEELCQNGAKVIIRAGSCGSLQPDLIKR
GDICICNAAVREDRVSHLLIHGDFPAVGDFDVYDTLNKCAQELNVPVFNG
ISVSSDMYYPNKIIPSRLEDYSKANAAVVEMELATLMVIGTLRKVKTGGI
LIVDGCPFKWDEGDFDNNLVPHQLENMIKIALGACAKLATKYA
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 chain3enz Chain E Residue 301 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB3enz Conservation of structure and activity in Plasmodium purine nucleoside phosphorylases.
Resolution2.03 Å
Binding residue
(original residue number in PDB)		S91 C92 G93 Y160 D206
Binding residue
(residue number reindexed from 1)		S89 C90 G91 Y158 D204
Annotation score5
Enzymatic activity
Catalytic site (original residue number in PDB) H7 G23 R27 R45 E77 R88 S91 D206 G207 P209 V222
Catalytic site (residue number reindexed from 1) H5 G21 R25 R43 E75 R86 S89 D204 G205 P207 V220
Enzyme Commision number 2.4.2.1: purine-nucleoside phosphorylase.
2.4.2.44: S-methyl-5'-thioinosine phosphorylase.
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0004731 purine-nucleoside phosphorylase activity
GO:0004850 uridine phosphorylase activity
GO:0016757 glycosyltransferase activity
GO:0017061 S-methyl-5-thioadenosine phosphorylase activity
GO:0047975 guanosine phosphorylase activity
Biological Process
GO:0006148 inosine catabolic process
GO:0006166 purine ribonucleoside salvage
GO:0006195 purine nucleotide catabolic process
GO:0006218 uridine catabolic process
GO:0009116 nucleoside metabolic process
Cellular Component
GO:0005829 cytosol

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Cellular Component
External links
PDB RCSB:3enz, PDBe:3enz, PDBj:3enz
PDBsum3enz
PubMed19575810
UniProtQ8I3X4|PNPH_PLAF7 Purine nucleoside phosphorylase (Gene Name=PNP)

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