Engineering the biomimetic cofactors of NMNH for cytochrome P450 BM3 based on binding conformation refinement

Yao Liu, Yalong Cong, Chuanxi Zhang, Bohuan Fang, Yue Pan, Qiangzi Li, Chun You, Bei Gao, John Z.H. Zhang, Tong Zhu, Lujia Zhang

Research output: Contribution to journalArticlepeer-review

Abstract

Cytochrome P450 BM3 (BM3) is an important oxidoreductase that is widely used in drug synthesis, chemical synthesis, and other industries. However, as BM3 unquestionably increases costs by consuming a natural cofactor that unstably provides electrons, an alternative biomimetic cofactor with simpler structures represented by nicotinamide mononucleotide (NMNH) has been utilized. Currently, few reports exist on artificially modified BM3 enzymes using NMNH, especially regarding theoretical simulation and calculation. With the cognition of the mechanism in mind, we propose a strategy that optimizes and refines catalytic conformation. Based on constrained molecular dynamics simulation, the distance between N-5 of FAD flavin and C-4 of NMNH is used as a cue for the determination of improved conformation, and the potential positive mutants are subsequently screened virtually in accordance with binding free energy requirements. As a result, theKcat/KMvalues of the favorable mutant S848R increased to 205.38% compared to the wild-type BM3 with NMNH. These data indicate that our strategy can be applied for the specific utilization of biomimetic cofactors by oxidoreductases represented by BM3.

Original languageEnglish (US)
Pages (from-to)12036-12042
Number of pages7
JournalRSC Advances
Volume11
Issue number20
DOIs
StatePublished - Mar 24 2021

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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