3e0b

Bacillus anthracis Dihydrofolate Reductase complexed with NADPH and 2,4-diamino-5-(3-(2,5-dimethoxyphenyl)prop-1-ynyl)-6-ethylpyrimidine (UCP120B)

spinqualitylabelsall models 3e0b, resolution 2.25Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3e0b is a 2 chain structure with sequence from Bacillus anthracis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.25Å Ligands: N22, NDP Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q81R22_BACAN Key enzyme in folate metabolism. Catalyzes an essential reaction for de novo glycine and purine synthesis, and for DNA precursor synthesis (By similarity).[PIRNR:PIRNR000194] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Bacillus anthracis, the causative agent of anthrax, poses a significant biodefense danger. Serious limitations in approved therapeutics and the generation of resistance have produced a compelling need for new therapeutic agents against this organism. Bacillus anthracis is known to be insensitive to the clinically used antifolate, trimethoprim, because of a lack of potency against the dihydrofolate reductase enzyme. Herein, we describe a novel lead series of B. anthracis dihydrofolate reductase inhibitors characterized by an extended trimethoprim-like scaffold. The best lead compound adds only 22 Da to the molecular weight and is 82-fold more potent than trimethoprim. An X-ray crystal structure of this lead compound bound to B. anthracis dihydrofolate reductase in the presence of NADPH was determined to 2.25 A resolution. The structure reveals several features that can be exploited for further development of this lead series. Synthetic and Crystallographic Studies of a New Inhibitor Series Targeting Bacillus anthracis Dihydrofolate Reductase.,Beierlein JM, Frey KM, Bolstad DB, Pelphrey PM, Joska TM, Smith AE, Priestley ND, Wright DL, Anderson AC J Med Chem. 2008 Nov 13. PMID:19007108 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Dihydrofolate reductase 3D structures

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