Structure of PDB 1i80 Chain B

Receptor sequence
>1i80B (length=263) Species: 1773 (Mycobacterium tuberculosis) [Search protein sequence]
PDPDELARRAAQVIADRTGIGEHDVAVVLGSGWLPAVAALGSPTTVLPQA
ELPGFVPPTAAGHAGELLSVPIGAHRVLVLAGRIHAYEGHDLRYVVHPVR
AARAAGAQIMVLTNAAGGLRADLQVGQPVLISDHLNLTARSPLVGGEFVD
LTDAYSPRLRELARQSDPQLAEGVYAGLPGPHYETPAEIRMLQTLGADLV
GMSTVHETIAARAAGAEVLGVSLVTNLAAGITGEPLSHAEVLAAGAASAT
RMGALLADVIARF
3D structure
PDB1i80 Structures of purine nucleoside phosphorylase from Mycobacterium tuberculosis in complexes with immucillin-H and its pieces.
ChainB
Resolution2.0 Å
3D
structure
Catalytic site residues are labeled in the structure
[Spin on]
[Spin off]
[Reset orientation]

[High quality]
[Low quality]

[White background]
[Black background]

[Download]
[Download structure with residue number starting from 1]
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) S31 H63 H85 Y87 E88 A115 M202 S203 N226 A228 H238
Enzyme Commision number 2.4.2.1: purine-nucleoside phosphorylase.
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 9HX B A120 A121 G122 Y188 E189 V205 G206 T230 N231 A115 A116 G117 Y183 E184 V200 G201 T225 N226 MOAD: Kd=0.39uM
PDBbind-CN: -logKd/Ki=6.41,Kd=0.39uM
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

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

[Back to BioLiP]