Structure of PDB 2qhx Chain C

Receptor sequence
>2qhxC (length=254) Species: 5664 (Leishmania major) [Search protein sequence]
VPVALVTGAAKRLGRSIAEGLHAEGYAVCLHYHRSAAEANALSATLNARR
PNSAITVQADLSNVATAPAPVTLFTRCAELVAACYTHWGRCDVLVNNASS
FYPTPLLRAMETATADLFGSNAIAPYFLIKAFAHRVAGTPAKHRGTNYSI
INMVDAMTNQPLLGYTIYTMAKGALEGLTRSAALELAPLQIRVNGVGPGL
SVLVEGHRSKVPLYQRDSSAAEVSDVVIFLCSSKAKYITGTCVKVDGGYS
LTRA
3D structure
PDB2qhx Discovery of potent pteridine reductase inhibitors to guide antiparasite drug development.
ChainC
Resolution2.61 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) R17 R39 N45 N108 D181 Q186 Y194
Catalytic site (residue number reindexed from 1) R12 R34 N40 N96 D155 Q160 Y168
Enzyme Commision number 1.5.1.33: pteridine reductase.
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 NAP C R17 L18 H36 Y37 H38 R39 S40 L66 N109 A110 S111 S112 M179 V180 D181 K198 P224 L226 S227 R12 L13 H31 Y32 H33 R34 S35 L61 N97 A98 S99 S100 M153 V154 D155 K172 P198 L200 S201
BS02 FE1 C S111 F113 Y191 Y194 S99 F101 Y165 Y168 BindingDB: Ki=37nM
Gene Ontology
Molecular Function
GO:0004155 6,7-dihydropteridine reductase activity
GO:0016491 oxidoreductase activity
GO:0047040 pteridine reductase activity
Biological Process
GO:0006729 tetrahydrobiopterin biosynthetic process
GO:0031427 response to methotrexate
Cellular Component
GO:0005829 cytosol

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Cellular Component
External links
PDB RCSB:2qhx, PDBe:2qhx, PDBj:2qhx
PDBsum2qhx
PubMed18245389
UniProtQ01782|PTR1_LEIMA Pteridine reductase 1 (Gene Name=PTR1)

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