2v0c

File:2v0c.gif

spinqualitylabelsall models 2v0c, resolution 1.85Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image

LEUCYL-TRNA SYNTHETASE FROM THERMUS THERMOPHILUS COMPLEXED WITH A SULPHAMOYL ANALOGUE OF LEUCYL-ADENYLATE IN THE SYNTHETIC SITE AND AN ADDUCT OF AMP WITH 5-FLUORO-1,3-DIHYDRO-1-HYDROXY-2,1-BENZOXABOROLE (AN2690) IN THE EDITING SITE

OverviewOverview

Aminoacyl-transfer RNA (tRNA) synthetases, which catalyze the attachment, of the correct amino acid to its corresponding tRNA during translation of, the genetic code, are proven antimicrobial drug targets. We show that the, broad-spectrum antifungal 5-fluoro-1,3-dihydro-1-hydroxy-2,1-benzoxaborole, (AN2690), in development for the treatment of onychomycosis, inhibits, yeast cytoplasmic leucyl-tRNA synthetase by formation of a stable, tRNA(Leu)-AN2690 adduct in the editing site of the enzyme. Adduct, formation is mediated through the boron atom of AN2690 and the 2'- and, 3'-oxygen atoms of tRNA's3'-terminal adenosine. The trapping of, enzyme-bound tRNA(Leu) in the editing site prevents catalytic turnover, thus inhibiting synthesis of leucyl-tRNA(Leu) and consequentially blocking, protein synthesis. This result establishes the editing site as a bona fide, target for aminoacyl-tRNA synthetase inhibitors.

About this StructureAbout this Structure

2V0C is a Single protein structure of sequence from Thermus thermophilus with ZN, SO4, LEU and ANZ as ligands. Structure known Active Site: AC1. Full crystallographic information is available from OCA.

ReferenceReference

An antifungal agent inhibits an aminoacyl-tRNA synthetase by trapping tRNA in the editing site., Rock FL, Mao W, Yaremchuk A, Tukalo M, Crepin T, Zhou H, Zhang YK, Hernandez V, Akama T, Baker SJ, Plattner JJ, Shapiro L, Martinis SA, Benkovic SJ, Cusack S, Alley MR, Science. 2007 Jun 22;316(5832):1759-61. PMID:17588934

Page seeded by OCA on Mon Nov 5 18:42:46 2007