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- W4386944169 abstract "The coordination bonding between inhibitor ligands and heme iron plays a critical role in disrupting the essential catalytic functions of cytochrome P450 enzymes (P450s). Despite its intrinsic importance and consequential implications for human health, our current understanding of coordination bonding in P450 inhibition remains limited. To address this knowledge gap, we conducted a systematic theoretical analysis of the complexes between a ferric or a ferrous heme model and representative inhibitor ligands. Specifically, we evaluated the charge-transfer (CT) effect within these complexes by employing a series of theoretical methods based on density functional theory (DFT). Through a comprehensive analysis, we unveiled the relative significance of ligand-to-heme forward CT in the ferric and ferrous complexes of reversible inhibitors. In contrast, backward CT dominates over forward CT in the ferrous heme complexes of quasi-irreversible inhibitors. Further analysis using the compact frontier orbital method underscores the elevated electron-accepting abilities of quasi-irreversible inhibitors for π backdonation, which greatly amplifies their binding affinity for the ferrous heme. This study sheds light on the intricate mechanisms underlying P450 inhibition and provides valuable insights for future inhibitor design and development." @default.
- W4386944169 created "2023-09-23" @default.
- W4386944169 creator A5046877868 @default.
- W4386944169 creator A5048588199 @default.
- W4386944169 date "2023-09-22" @default.
- W4386944169 modified "2023-10-15" @default.
- W4386944169 title "Bidirectional Charge Transfer at the Heme Iron in Reversible and Quasi-irreversible Cytochrome P450 Inhibition" @default.
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- W4386944169 doi "https://doi.org/10.1021/acs.inorgchem.3c02541" @default.
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