Structure of PDB 1k9s Chain B

Receptor sequence
>1k9sB (length=237) Species: 562 (Escherichia coli) [Search protein sequence]
ATPHINAEMGDFADVVLMPGDPLRAKYIAETFLEDAREVNNVRGMLGFTG
TYKGRKISVMGHGMGIPSCSIYTKELITDFGVKKIIRVGSCGAVLPHVKL
RDVVIGMGACTDSKVNRIRFKDHDFAAIADFDMVRNAVDAAKALGIDARV
GNLFSADLFYSPDGEMFDVMEKYGILGVEMEAAGIYGVAAEFGAKALTIC
TVSDHIRTHEQTTAAERQTTFNDMIKIALESVLLGDK
3D structure
PDB1k9s Open and closed conformation of the E. coli purine nucleoside phosphorylase active center and implications for the catalytic mechanism.
ChainB
Resolution2.0 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) H4 G20 R24 R43 E75 R87 S90 S203 D204 I206 R217
Catalytic site (residue number reindexed from 1) H4 G20 R24 R43 E75 R87 S90 S203 D204 I206 R217
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 PO4 B G20 R24 R87 G89 S90 G20 R24 R87 G89 S90
BS02 FM2 B M64 S90 C91 G92 F159 V178 E179 M180 E181 S203 D204 M64 S90 C91 G92 F159 V178 E179 M180 E181 S203 D204
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0004731 purine-nucleoside phosphorylase activity
GO:0016757 glycosyltransferase activity
GO:0016763 pentosyltransferase activity
GO:0042802 identical protein binding
GO:0047975 guanosine phosphorylase activity
Biological Process
GO:0006139 nucleobase-containing compound metabolic process
GO:0006152 purine nucleoside catabolic process
GO:0006974 DNA damage response
GO:0009116 nucleoside metabolic process
GO:0009164 nucleoside catabolic process
GO:0019686 purine nucleoside interconversion
GO:0042278 purine nucleoside metabolic process
Cellular Component
GO:0005737 cytoplasm
GO:0005829 cytosol
GO:0016020 membrane

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Biological Process
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Cellular Component
External links
PDB RCSB:1k9s, PDBe:1k9s, PDBj:1k9s
PDBsum1k9s
PubMed11786017
UniProtP0ABP8|DEOD_ECOLI Purine nucleoside phosphorylase DeoD-type (Gene Name=deoD)

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