A Comprehensive Quantitative Assay for Amine Transaminases
A Comprehensive Quantitative Assay for Amine Transaminases
复制标题
胺转氨酶的综合定量测定
DOI:
10.1002/cctc.201901430
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发表时间:
2019
期刊:
影响因子:
4.5
通讯作者:
Cairns R
中科院分区:
文献类型:
--
作者:
Cairns R
The development of effective high‐throughput screening assays has contributed greatly to the wealth of designer enzymes available, by enabling rapid identification of desired variants from large mutant libraries. Here, we report a general and operationally simple end‐point assay for transaminases that enables the screening of both amine donors and acceptors in liquid phase. The spectrophotometric‐based screen exploits the amine donor 2‐aminoethylaniline (2‐AEA) and relies on reaction ofin situgenerated indole with Ehrlich's reagent. The assay has also been adapted to allow screening in the reverse direction by addition of indole and subsequent spectrophotometric analysis. Importantly, the screen provides qualitative information on the enantio‐preference of the individual biocatalysts. To increase the assay throughput, an engineered expression strain (E. coliBL21(DE3) ΔtnaA) lacking tryptophanase activity, was generated to enable reliable and direct evaluation of individual colonies arrayed on agar plates.
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影响因子:
3.2
作者:
M. Weiß;Ioannis V. Pavlidis;P. Spurr;S. Hanlon;B. Wirz;H. Iding;U. Bornscheuer
通讯作者:
U. Bornscheuer
DOI:
10.1016/j.cogsc.2017.06.002
发表时间:
2017-10-01
影响因子:
9.3
作者:
Hammer, Stephan C.;Knight, Anders M.;Arnold, Frances H.
通讯作者:
Arnold, Frances H.
影响因子:
7.4
作者:
M. Weiß;Ioannis V. Pavlidis;Clare Vickers;M. Höhne;U. Bornscheuer
通讯作者:
U. Bornscheuer
影响因子:
4.9
作者:
Baud, D.;Ladkau, N.;Hailes, H. C.
通讯作者:
Hailes, H. C.
影响因子:
4.5
作者:
Steffen-Munsberg, Fabian;Vickers, Clare;Hoehne, Matthias
通讯作者:
Hoehne, Matthias