EttA regulates translation by binding the ribosomal E site and restricting ribosome-tRNA dynamics.
EttA regulates translation by binding the ribosomal E site and restricting ribosome-tRNA dynamics.
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DOI:
10.1038/nsmb.2741
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发表时间:
2014-02
影响因子:
16.8
通讯作者:
Frank J
中科院分区:
文献类型:
--
作者:
Chen B;Boël G;Hashem Y;Ning W;Fei J;Wang C;Gonzalez RL Jr;Hunt JF;Frank J
Cells express many ribosome-interacting factors whose functions and molecular mechanisms remain unknown. Here, we elucidate the mechanism of a newly characterized regulatory translation factor, Energy-dependent Translational Throttle A (EttA), which is an Escherichia coli representative of the ATP-binding cassette F (ABC-F) protein family. Using cryo-EM, we demonstrate that the ATP-bound form of EttA binds to the ribosomal tRNA exit (E) site, where it forms bridging interactions between the ribosomal L1 stalk and the tRNA bound in the peptidyl-tRNA binding (P) site. Using single-molecule fluorescence resonance energy transfer (smFRET), we show that the ATP-bound form of EttA restricts ribosome and tRNA dynamics required for protein synthesis. This work represents the first example, to our knowledge, where the detailed molecular mechanism of any ABC-F family protein has been determined and establishes a framework for elucidating the mechanisms of other regulatory translation factors.
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影响因子:
16.8
作者:
Boël G;Smith PC;Ning W;Englander MT;Chen B;Hashem Y;Testa AJ;Fischer JJ;Wieden HJ;Frank J;Gonzalez RL Jr;Hunt JF
通讯作者:
Hunt JF
DOI:
10.1038/10695
发表时间:
1999-07-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
Agrawal, RK;Heagle, AB;Frank, J
通讯作者:
Frank, J
影响因子:
64.8
作者:
Andersen, Christian B. F.;Becker, Thomas;Beckmann, Roland
通讯作者:
Beckmann, Roland
影响因子:
3
作者:
BROOKS, BR;BRUCCOLERI, RE;KARPLUS, M
通讯作者:
KARPLUS, M
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