3o0a

Publication Abstract from PubMed

The editing or hydrolytic CP1 domain of leucyl-tRNA synthetase (LeuRS) hydrolyses several misactivated amino acids. The CP1 domain of Aquifex aeolicus LeuRS was expressed, purified and crystallized by the hanging-drop vapour-diffusion method using ammonium sulfate as precipitant. Crystals belong to space group P2(1)2(1)2(1), with unit-cell parameters a = 38.8, b = 98.4, c = 116.7 A. Crystals diffract to beyond 1.8 A resolution and contain two monomers in the asymmetric unit. Two CP1 mutants in which a conserved threonine residue essential for the fidelity of the hydrolytic pathway is mutated to alanine or glutamic acid have also been expressed and crystallized. Crystals of the two CP1 mutants are isomorphs of the wild type and diffract to beyond 1.9 A resolution. All structures were solved by molecular-replacement techniques.

Crystallization and preliminary X-ray crystallographic study of the wild type and two mutants of the CP1 hydrolytic domain from Aquifex aeolicus leucyl-tRNA synthetase.,Cura V, Olieric N, Guichard A, Wang ED, Moras D, Eriani G, Cavarelli J Acta Crystallogr Sect F Struct Biol Cryst Commun. 2005 Oct 1;61(Pt, 10):899-901. Epub 2005 Sep 13. PMID:016511190^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.