Structure of PDB 1sq6 Chain A Binding Site BS01

Receptor Information
>1sq6 Chain A (length=225) Species: 36329 (Plasmodium falciparum 3D7) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
LLRHLKISKEQITPVVLVVGDPGRVDKIKVVCDSYVDLAYNREYKSVECH
YKGQKFLCVSHGVGSAGCAVCFEELCQNGAKVIIRAGSCGSLQPDLIKRG
DICICNAAVREDRVSHLLIHGDFPAVGDFDVYDTLNKCAQELNVPVFNGI
SVSSDMYYPNKIIPSRLEDYSKANAAVVEMELATLMVIGTLRKVKTGGIL
IVDGHQLENMIKIALGACAKLATKY
Ligand information
Ligand IDSO4
InChIInChI=1S/H2O4S/c1-5(2,3)4/h(H2,1,2,3,4)/p-2
InChIKeyQAOWNCQODCNURD-UHFFFAOYSA-L
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.5.0[O-]S(=O)(=O)[O-]
CACTVS 3.341[O-][S]([O-])(=O)=O
ACDLabs 10.04[O-]S([O-])(=O)=O
FormulaO4 S
NameSULFATE ION
ChEMBL
DrugBankDB14546
ZINC
PDB chain1sq6 Chain A Residue 401 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1sq6 Structures of Plasmodium falciparum purine nucleoside phosphorylase complexed with sulfate and its natural substrate inosine.
Resolution2.4 Å
Binding residue
(original residue number in PDB)		G31 R96 S99
Binding residue
(residue number reindexed from 1)		G20 R85 S88
Annotation score1
Enzymatic activity
Catalytic site (original residue number in PDB) H15 G31 R35 R53 E85 R96 S99 D214 G215
Catalytic site (residue number reindexed from 1) H4 G20 R24 R42 E74 R85 S88 D203 G204
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:1sq6, PDBe:1sq6, PDBj:1sq6
PDBsum1sq6
PubMed16131758
UniProtQ8I3X4|PNPH_PLAF7 Purine nucleoside phosphorylase (Gene Name=PNP)

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