Control of ribosomal subunit rotation by elongation factor G.
Control of ribosomal subunit rotation by elongation factor G.
复制标题
DOI:
10.1126/science.1235970
复制
发表时间:
2013-06-28
期刊:
影响因子:
--
通讯作者:
Cate JH
中科院分区:
文献类型:
--
作者:
Pulk A;Cate JH
Protein synthesis by the ribosome requires the translocation of transfer RNAs and messenger RNA by one codon after each peptide bond is formed, a reaction that requires ribosomal subunit rotation and is catalyzed by the guanosine triphosphatase (GTPase) elongation factor G (EF-G). We determined 3 Å resolution x-ray crystal structures of EF-G complexed with a non-hydrolyzable GTP analogue and bound to the Escherichia coli ribosome in different states of ribosomal subunit rotation. The structures reveal that EF-G binding to the ribosome stabilizes switch regions in the GTPase active site, resulting in a compact EF-G conformation that favors an intermediate state of ribosomal subunit rotation. These structures suggest that EF-G controls the translocation reaction by cycles of conformational rigidity and relaxation preceding and following GTP hydrolysis.
登录
查看更多内容
影响因子:
6.1
作者:
Agirrezabala, Xabier;Frank, Joachim
通讯作者:
Frank, Joachim
影响因子:
5.6
作者:
Gabashvili, IS;Agrawal, RK;Frank, J
通讯作者:
Frank, J
DOI:
10.1126/science.1202692
发表时间:
2011-05-20
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Dunkle JA;Wang L;Feldman MB;Pulk A;Chen VB;Kapral GJ;Noeske J;Richardson JS;Blanchard SC;Cate JH
通讯作者:
Cate JH
DOI:
10.1126/science.1179709
发表时间:
2009-10-30
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Gao YG;Selmer M;Dunham CM;Weixlbaumer A;Kelley AC;Ramakrishnan V
通讯作者:
Ramakrishnan V
影响因子:
16.8
作者:
Konevega, Andrey L.;Fischer, Niels;Rodnina, Marina V.
通讯作者:
Rodnina, Marina V.