| Autor: |
Heejin Nam, Youngkook Moon, Eunjeong Kim, Sooim Shin |
| Jazyk: |
angličtina |
| Rok vydání: |
2023 |
| Předmět: |
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| Zdroj: |
Applied Biological Chemistry, Vol 66, Iss 1, Pp 1-8 (2023) |
| Druh dokumentu: |
article |
| ISSN: |
2468-0842 |
| DOI: |
10.1186/s13765-023-00781-7 |
| Popis: |
Abstract MauG catalyzes the six-electron oxidation of pre-tryptophan tryptophylquinone (preTTQ) cofactor in methylamine dehydrogenase (MADH) to form mature tryptophan tryptophylquinone (TTQ) via long-range electron transfer. To identify alternative substrates for MauG, docking models for 10 tryptophan-like compounds were constructed using Autodock Vina. These demonstrated spontaneous binding to the preTTQ binding site of MauG, with hydroxyindoles most frequently sharing the natural substrate binding site of MauG. To confirm the result of in silico analysis, 7-hydroxyindole was reacted with bis-FeIV of MauG. The spectroscopic change, representing the reactivity of MauG, revealed the highly increased reaction rate (k 3 ) toward 7-hydroxyindole, suggesting that bis-FeIV MauG extracted an electron from the 7-hydroxyindole and then oxidized to di-ferric MauG. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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