期刊
JOURNAL OF CHEMICAL INFORMATION AND MODELING
卷 61, 期 5, 页码 2383-2395出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jcim.1c00152
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资金
- grant (Vernetzungsdoktorand) by the Forschungszentrum Julich
- German Federal Ministry of Education and Research (BMBF) [031B0837A, 031L0182]
- German Research Foundation (DFG) [INST 208/704-1 FUGG, INST 208/654-1 FUGG]
- state of North Rhine Westphalia (NRW)
- European Regional Development Fund (EFRE) [34-EFRE-0300096]
- supercomputer JUWELS at Julich Supercomputing Centre (JSC) [15956]
- INMARE from the European Union's Horizon 2020 [634486]
- Ministerio de Economia, Industria y Competitividad [PCIN-2017-078, BIO2017-85522-R]
- Agencia Estatal de Investigacion (AEI) [PCIN-2017-078, BIO2017-85522-R]
- Fondo Europeo de Desarrollo Regional (FEDER) [PCIN-2017-078, BIO2017-85522-R]
- European Union (EU) [PCIN-2017-078, BIO2017-85522-R]
- Agencia Estatal CSIC [2020AEP061]
- Ministerio de Economia y Competitividad [BES-2015-073829]
- FEDER [BES-2015-073829]
Understanding the molecular origin of observed promiscuity range in enzymes is crucial, with the study revealing that promiscuous esterases are less flexible, more thermostable, and have increased specific activity compared to specific ones. This research provides a new starting point for exploration in biotechnology and synthetic chemistry by screening esterase sequence space through rigidity analyses.
Understanding mechanisms of promiscuity is increasingly important from a fundamental and application point of view. As to enzyme structural dynamics, more promiscuous enzymes generally have been recognized to also be more flexible. However, examples for the opposite received much less attention. Here, we exploit comprehensive experimental information on the substrate promiscuity of 147 esterases tested against 96 esters together with computationally efficient rigidity analyses to understand the molecular origin of the observed promiscuity range. Unexpectedly, our data reveal that promiscuous esterases are significantly less flexible than specific ones, are significantly more thermostable, and have a significantly increased specific activity. These results may be reconciled with a model according to which structural flexibility in the case of specific esterases serves for conformational proofreading. Our results signify that an esterase sequence space can be screened by rigidity analyses for promiscuous esterases as starting points for further exploration in biotechnology and synthetic chemistry.
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