Structure of PDB 1u1f Chain A

Receptor sequence
>1u1fA (length=243) Species: 562 (Escherichia coli) [Search protein sequence]
SDVFHLGLTKNDLQGATLAIVPGDPDRVEKIAALMDKPVKLASHREFTTW
RAELDGKPVIVCSTGIGGPSTSIAVEELAQLGIRTFLRIGTTGAIQPHIN
VGDVLVTTASVRLDGASLHFAPLEFPAVADFECTTALVEAAKSIGATTHV
GVTASSDTFYPGQERYDTYSGRVVRHFKGSMEEWQAMGVMNYEMESATLL
TMCASQGLRAGMVAGVIVNRTQTMKQTESHAVKIVVEAARRLL
3D structure
PDB1u1f Structural basis for inhibition of Escherichia coli uridine phosphorylase by 5-substituted acyclouridines.
ChainA
Resolution2.3 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) H8 G26 R30 R48 E80 R91 T94 R168 I220 V221 R223 M234
Catalytic site (residue number reindexed from 1) H5 G23 R27 R45 E77 R88 T91 R165 I217 V218 R220 M224
Enzyme Commision number 2.4.2.3: uridine 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 A G26 R30 R91 G93 T94 G23 R27 R88 G90 T91
BS02 183 A T94 T95 G96 F162 Q166 R168 E196 M197 I220 V221 M234 T91 T92 G93 F159 Q163 R165 E193 M194 I217 V218 M224 MOAD: Ki~680nM
BS03 183 A F7 H8 R48 F4 H5 R45 MOAD: Ki~680nM
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0004850 uridine phosphorylase activity
GO:0005524 ATP binding
GO:0016757 glycosyltransferase activity
GO:0016763 pentosyltransferase activity
GO:0030955 potassium ion binding
GO:0042802 identical protein binding
GO:0047847 deoxyuridine phosphorylase activity
Biological Process
GO:0006218 uridine catabolic process
GO:0006974 DNA damage response
GO:0009116 nucleoside metabolic process
GO:0009164 nucleoside catabolic process
GO:0009166 nucleotide catabolic process
GO:0044206 UMP salvage
GO:0046050 UMP catabolic process
Cellular Component
GO:0005737 cytoplasm
GO:0005829 cytosol
GO:0032991 protein-containing complex

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1u1f, PDBe:1u1f, PDBj:1u1f
PDBsum1u1f
PubMed15983408
UniProtP12758|UDP_ECOLI Uridine phosphorylase (Gene Name=udp)

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