1P33: Pteridine Reductase From Leishmania Tarentolae Complex With Nadph And Mtx

Citation:
Abstract
The protozoan parasites Leishmania utilize a pteridine-reducing enzyme, pteridine reductase (PTR1), to bypass antifolate inhibition. The crystal structure of PTR1 from L. tarentolae has been solved as a binary complex with NADPH at 2.8 A resolution. The structure was solved by molecular-replacement techniques using the recently reported L. major PTR1 structure as a search model. Comparisons of the present structure with the L. major PTR1 allowed us to identify regions of flexibility in the molecule. PTR1 is a member of the growing family of short-chain dehydrogenases (SDR) which share the characteristic Tyr(Xaa)(3)Lys motif in the vicinity of the active site. The functional enzyme is a tetramer and the crystallographic asymmetric unit contains a tetramer with 222 point-group symmetry.
PDB ID: 1P33Download
MMDB ID: 23932
PDB Deposition Date: 2003/4/16
Updated in MMDB: 2007/11
Experimental Method:
x-ray diffraction
Resolution: 2.86  Å
Source Organism:
Similar Structures:
Biological Unit for 1P33: tetrameric; determined by author and by software (PISA)
Molecular Components in 1P33
Label Count Molecule
Proteins (4 molecules)
4
Pteridine Reductase 1
Molecule annotation
Chemicals (8 molecules)
1
4
2
4
* Click molecule labels to explore molecular sequence information.

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