A Label-Free Assay for Aminoacylation of tRNA.
A Label-Free Assay for Aminoacylation of tRNA.
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DOI:
10.3390/genes11101173
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发表时间:
2020-10-07
期刊:
影响因子:
3.5
通讯作者:
Hou YM
中科院分区:
文献类型:
--
作者:
Gamper H;Hou YM
Aminoacylation of tRNA generates an aminoacyl-tRNA (aa-tRNA) that is active for protein synthesis on the ribosome. Quantification of aminoacylation of tRNA is critical to understand the mechanism of specificity and the flux of the aa-tRNA into the protein synthesis machinery, which determines the rate of cell growth. Traditional assays for the quantification of tRNA aminoacylation involve radioactivity, either with a radioactive amino acid or with a [3′-32P]-labeled tRNA. We describe here a label-free assay that monitors aminoacylation by biotinylation-streptavidin (SA) conjugation to the α-amine or the α-imine of the aminoacyl group on the aa-tRNA. The conjugated aa-tRNA product is readily separated from the unreacted tRNA by a denaturing polyacrylamide gel, allowing for quantitative measurement of aminoacylation. This label-free assay is applicable to a wide range of amino acids and tRNA sequences and to both classes of aminoacylation. It is more sensitive and robust than the assay with a radioactive amino acid and has the potential to explore a wider range of tRNA than the assay with a [3′-32P]-labeled tRNA. This label-free assay reports kinetic parameters of aminoacylation quantitatively similar to those reported by using a radioactive amino acid, suggesting its broad applicability to research relevant to human health and disease.
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影响因子:
16.6
作者:
Liu, Cuiping;Gamper, Howard;Liu, Hanqing;Cooperman, Barry S.;Hou, Ya-Ming
通讯作者:
Hou, Ya-Ming
影响因子:
4.8
作者:
Ledoux, Sarah;Uhlenbeck, Olke C.
通讯作者:
Uhlenbeck, Olke C.
DOI:
10.1073/pnas.172404099
发表时间:
2002-09-03
影响因子:
11.1
作者:
Hansen, JL;Schmeing, TM;Steitz, TA
通讯作者:
Steitz, TA
影响因子:
4.5
作者:
Liu, Cuiping;Sanders, Jeffrey M.;Hou, Ya-Ming
通讯作者:
Hou, Ya-Ming
影响因子:
14.9
作者:
Jühling F;Mörl M;Hartmann RK;Sprinzl M;Stadler PF;Pütz J
通讯作者:
Pütz J