Scalable continuous evolution for the generation of diverse enzyme variants encompassing promiscuous activities.
Scalable continuous evolution for the generation of diverse enzyme variants encompassing promiscuous activities.
复制标题
DOI:
10.1038/s41467-020-19539-6
复制
发表时间:
2020-11-06
影响因子:
16.6
通讯作者:
Liu CC
中科院分区:
文献类型:
--
作者:
Rix G;Watkins-Dulaney EJ;Almhjell PJ;Boville CE;Arnold FH;Liu CC
Enzyme orthologs sharing identical primary functions can have different promiscuous activities. While it is possible to mine this natural diversity to obtain useful biocatalysts, generating comparably rich ortholog diversity is difficult, as it is the product of deep evolutionary processes occurring in a multitude of separate species and populations. Here, we take a first step in recapitulating the depth and scale of natural ortholog evolution on laboratory timescales. Using a continuous directed evolution platform called OrthoRep, we rapidly evolve the Thermotoga maritima tryptophan synthase β-subunit (TmTrpB) through multi-mutation pathways in many independent replicates, selecting only on TmTrpB’s primary activity of synthesizing l-tryptophan from indole and l-serine. We find that the resulting sequence-diverse TmTrpB variants span a range of substrate profiles useful in industrial biocatalysis and suggest that the depth and scale of evolution that OrthoRep affords will be generally valuable in enzyme engineering and the evolution of biomolecular functions. Generating rich ortholog diversity for biocatalysts can be difficult due to the deep evolutionary processes involved. Here the authors use OrthoRep to rapidly evolve TrpB to produce sequence-diverse variants with altered substrate promiscuity.
登录
查看更多内容
影响因子:
14.8
作者:
Gietz, R. Daniel;Schiestl, Robert H.
通讯作者:
Schiestl, Robert H.
影响因子:
5.6
作者:
Bershtein, Shimon;Goldin, Korina;Tawfik, Dan S.
通讯作者:
Tawfik, Dan S.
影响因子:
15
作者:
Dick, Markus;Sarai, Nicholas S.;Arnold, Frances H.
通讯作者:
Arnold, Frances H.
影响因子:
48
作者:
Gibson, Daniel G.;Young, Lei;Smith, Hamilton O.
通讯作者:
Smith, Hamilton O.
DOI:
10.1021/acs.joc.8b00517
发表时间:
2018-07-20
期刊:
The Journal of organic chemistry
影响因子:
--
作者:
Boville CE;Romney DK;Almhjell PJ;Sieben M;Arnold FH
通讯作者:
Arnold FH