Crystallization and preliminary crystallographic studies of putative threonyl-tRNA synthetases from Aeropyrum pernix and Sulfolobus tokodaii

被引:2
作者
Shimizu, Satoru [1 ]
Juan, Ella Czarina Magat [1 ]
Miyashita, Yu-ichiro [1 ]
Sato, Yoshiteru [1 ]
Hoque, Md Mominul [1 ]
Suzuki, Kaoru [2 ]
Yogiashi, Masataka [2 ]
Tsunoda, Masaru [3 ]
Dock-Bregeon, Anne-Catherine [4 ]
Moras, Dino [4 ]
Sekiguchi, Takeshi [2 ]
Takenaka, Akio [1 ,3 ]
机构
[1] Tokyo Inst Technol, Grad Sch Biosci & Biotechnol, Midori Ku, Yokohama, Kanagawa 2268501, Japan
[2] Iwaki Meisei Univ, Coll Sci & Engn, Fukushima 9708551, Japan
[3] Iwaki Meisei Univ, Fac Pharm, Fukushima 9708551, Japan
[4] Inst Genet & Biol Mol & Cellulaire, Dept Biol & Genom Struct, F-67404 Illkirch Graffenstaden, France
来源
ACTA CRYSTALLOGRAPHICA SECTION F-STRUCTURAL BIOLOGY COMMUNICATIONS | 2008年 / 64卷
关键词
D O I
10.1107/S1744309108026924
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
Threonyl-tRNA synthetase (ThrRS) plays an essential role in protein synthesis by catalyzing the aminoacylation of tRNA(Thr) and editing misacylation. ThrRS generally contains an N-terminal editing domain, a catalytic domain and an anticodon-binding domain. The sequences of the editing domain in ThrRSs from archaea differ from those in bacteria and eukaryotes. Furthermore, several creanarchaea including Aeropyrum pernix K1 and Sulfolobus tokodaii strain 7 contain two genes encoding either the catalytic or the editing domain of ThrRS. To reveal the structural basis for this evolutionary divergence, the two types of ThrRS from the crenarchaea A. pernix and S. tokodaii have been overexpressed in Eschericha coli, purified and crystallized by the hanging-drop vapour-diffusion method. Diffraction data were collected and the structure of a selenomethionine-labelled A. pernix type-1 ThrRS crystal has been solved using the MAD method.
引用
收藏
页码:903 / 910
页数:8
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