Engineered Tryptophan Synthase Balances Equilibrium Effects and Fast Dynamic Effects.
Engineered Tryptophan Synthase Balances Equilibrium Effects and Fast Dynamic Effects.
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设计的色氨酸合酶平衡了平衡效应和快速动态效应。
DOI:
10.1021/acscatal.1c03913
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发表时间:
2022-01-21
期刊:
影响因子:
12.9
通讯作者:
Schwartz, Steven D.
中科院分区:
文献类型:
--
作者:
Schafer, Joseph W.;Chen, Xi;Schwartz, Steven D.
关键词:
Creating efficient and stable enzymes for catalysis in pharmaceutical and industrial laboratories is an important research goal. Arnold et al. used directed evolution to engineer a natural tryptophan synthase to create a mutant that is operable under laboratory conditions without the need for a natural allosteric effector. The use of directed evolution allows researchers to improve enzymes without understanding the structure–activity relationship. Here, we present a transition path sampling study of a key chemical transformation in the tryptophan synthase catalytic cycle. We observed that while directed evolution does mimic the natural allosteric effect from a stability perspective, fast protein dynamics associated with chemistry has been dramatically altered. This work provides further evidence of the role of protein dynamics in catalysis and clearly demonstrates the multifaceted complexity of mutations associated with protein engineering. This study also demonstrates a fascinating contrast between allosteric and stand-alone functions at the femtosecond time scale.
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影响因子:
18.2
作者:
Goings JJ;Hammes-Schiffer S
通讯作者:
Hammes-Schiffer S
DOI:
10.1039/c8cc02426j
发表时间:
2018-06-19
期刊:
Chemical communications (Cambridge, England)
影响因子:
--
作者:
Maria-Solano MA ;Serrano-Hervás E ;Romero-Rivera A ;Iglesias-Fernández J ;Osuna S
通讯作者:
Osuna S
影响因子:
4.4
作者:
Antoniou, Dimitri;Schwartz, Steven D.
通讯作者:
Schwartz, Steven D.
影响因子:
3.3
作者:
Antoniou, Dimitri;Schwartz, Steven D.
通讯作者:
Schwartz, Steven D.
影响因子:
5.6
作者:
Paci, E;Caflisch, A;Karplus, M
通讯作者:
Karplus, M