Structure of PDB 6apu Chain A

Receptor sequence
>6apuA (length=177) Species: 5702 (Trypanosoma brucei brucei) [Search protein sequence]
CKYDFATSVLFTEAELHTRMRGVAQRIADDYSNCNLKPLENPLVIVSVLK
GSFVFTADMVRILGDFGVPTRVEFLRASSYDIRGKHVLVLEDILDTALTL
REVVDSLKKSEPASIKTLVAIDKPGGRKIPFTAEYVVADVPNVFVVGYGL
DYDQSYREVRDVVILKPSVYETWGKEL
3D structure
PDB6apu Evaluation of the Trypanosoma brucei 6-oxopurine salvage pathway as a potential target for drug discovery.
ChainA
Resolution1.842 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) E113 D114 D117 F166 R179
Catalytic site (residue number reindexed from 1) E91 D92 D95 F144 R157
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 MG A T22 R25 T18 R21
BS02 3L6 A I115 D117 T118 A119 T121 K145 F166 V167 I93 D95 T96 A97 T99 K123 F144 V145 MOAD: Ki=13.46uM
Gene Ontology
Molecular Function
GO:0000166 nucleotide binding
GO:0000287 magnesium ion binding
GO:0004422 hypoxanthine phosphoribosyltransferase activity
GO:0016757 glycosyltransferase activity
GO:0046872 metal ion binding
GO:0052657 guanine phosphoribosyltransferase activity
Biological Process
GO:0006166 purine ribonucleoside salvage
GO:0006178 guanine salvage
GO:0032263 GMP salvage
GO:0032264 IMP salvage
GO:0046100 hypoxanthine metabolic process
Cellular Component
GO:0005737 cytoplasm
GO:0005829 cytosol
GO:0020015 glycosome
GO:0031981 nuclear lumen
GO:0097014 ciliary plasm

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Molecular Function
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Cellular Component
External links
PDB RCSB:6apu, PDBe:6apu, PDBj:6apu
PDBsum6apu
PubMed29481567
UniProtQ07010|HPRT_TRYBB Hypoxanthine-guanine phosphoribosyltransferase (Gene Name=HGPRT)

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