Structure of PDB 1g9s Chain A

Receptor sequence
>1g9sA (length=169) Species: 562 (Escherichia coli) [Search protein sequence]
MKHTVEVMIPEAEIKARIAELGRQITERYKDSGSDMVLVGLLRGSFMFMA
DLCREVQVSHEVDFMTASSRDLKILKDLDEDIRGKDVLIVEDIIDSGNTL
SKVREILSLREPKSLAICTLLDKPSRREVNVPVEFIGFSIPDEFVVGYGI
DYAQRYRHLPYIGKVILLD
3D structure
PDB1g9s Crystal structures of free, IMP-, and GMP-bound Escherichia coli hypoxanthine phosphoribosyltransferase.
ChainA
Resolution2.8 Å
3D
structure
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Enzymatic activity
Enzyme Commision number 2.4.2.8: hypoxanthine phosphoribosyltransferase.
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 IMP A E103 I105 D107 S108 G109 N110 T111 L112 F156 E91 I93 D95 S96 G97 N98 T99 L100 F144 PDBbind-CN: -logKd/Ki=3.61,Ki=247uM
Gene Ontology
Molecular Function
GO:0000166 nucleotide binding
GO:0000287 magnesium ion binding
GO:0004422 hypoxanthine phosphoribosyltransferase activity
GO:0016757 glycosyltransferase activity
GO:0042802 identical protein binding
GO:0046872 metal ion binding
GO:0052657 guanine phosphoribosyltransferase activity
GO:0097216 guanosine tetraphosphate binding
Biological Process
GO:0006166 purine ribonucleoside salvage
GO:0006178 guanine salvage
GO:0032263 GMP salvage
GO:0032264 IMP salvage
GO:0046100 hypoxanthine metabolic process
GO:0051289 protein homotetramerization
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:1g9s, PDBe:1g9s, PDBj:1g9s
PDBsum1g9s
PubMed12070315
UniProtP0A9M2|HPRT_ECOLI Hypoxanthine phosphoribosyltransferase (Gene Name=hpt)

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