Structure of PDB 1i80 Chain A Binding Site BS02

Receptor Information
>1i80 Chain A (length=266) Species: 1773 (Mycobacterium tuberculosis) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
DPRPDPDELARRAAQVIADRTGIGEHDVAVVLGSGWLPAVAALGSPTTVL
PQAELPGFVPPTAAGHAGELLSVPIGAHRVLVLAGRIHAYEGHDLRYVVH
PVRAARAAGAQIMVLTNAAGGLRADLQVGQPVLISDHLNLTARSPLVGGE
FVDLTDAYSPRLRELARQSDPQLAEGVYAGLPGPHYETPAEIRMLQTLGA
DLVGMSTVHETIAARAAGAEVLGVSLVTNLAAGITGEPLSHAEVLAAGAA
SATRMGALLADVIARF
Ligand information
Ligand ID9HX
InChIInChI=1S/C6H5N3O/c10-6-5-4(1-2-7-5)8-3-9-6/h1-3,7H,(H,8,9,10)
InChIKeyUWMXUDUWVFWJPX-UHFFFAOYSA-N
SMILES
SoftwareSMILES
CACTVS 3.341O=C1NC=Nc2cc[nH]c12
OpenEye OEToolkits 1.5.0c1c[nH]c2c1N=CNC2=O
ACDLabs 10.04O=C1c2c(N=CN1)ccn2
FormulaC6 H5 N3 O
Name9-DEAZAHYPOXANTHINE
ChEMBLCHEMBL1230671
DrugBankDB04095
ZINCZINC000012504135
PDB chain1i80 Chain A Residue 301 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1i80 Structures of purine nucleoside phosphorylase from Mycobacterium tuberculosis in complexes with immucillin-H and its pieces.
Resolution2.0 Å
Binding residue
(original residue number in PDB)		A120 A121 G122 E189 V205 G206 M207 N231
Binding residue
(residue number reindexed from 1)		A118 A119 G120 E187 V203 G204 M205 N229
Annotation score1
Binding affinityMOAD: Kd=0.39uM
Enzymatic activity
Catalytic site (original residue number in PDB) S36 H68 H90 Y92 E93 A120 M207 S208 N231 A233 H243
Catalytic site (residue number reindexed from 1) S34 H66 H88 Y90 E91 A118 M205 S206 N229 A231 H241
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:0006154 adenosine catabolic process
GO:0006161 deoxyguanosine catabolic process
GO:0009116 nucleoside metabolic process
Cellular Component
GO:0005737 cytoplasm

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Molecular Function
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Cellular Component
External links
PDB RCSB:1i80, PDBe:1i80, PDBj:1i80
PDBsum1i80
PubMed11444966
UniProtP9WP01|PUNA_MYCTU Purine nucleoside phosphorylase (Gene Name=punA)

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