Improved Chemical Syntheses of 1- and 5-Deazariboflavin
摘要:
The cofactor flavin adenine dinucleotide (FAD) is required for the catalytic activity of a large class of enzymes known as flavoenzymes. Because flavin cofactors participate in catalysis via a number of different mechanisms, isoalloxazine analogues are valuable for mechanistic studies. We report improved chemical syntheses for the preparation of the two key analogues, 5-deazariboflavin and 1-deazariboflavin.
Synthesis and Electrochemical Properties of Structurally Modified Flavin Compounds
作者:Madina Mansurova、Melissa S. Koay、Wolfgang Gärtner
DOI:10.1002/ejoc.200800504
日期:2008.11
Four structurallymodifiedflavincompounds have been synthesized and characterized for their redox potential by chemical reduction with sodium dithionite. Besides the previously reported 1- and 5-deazariboflavin, a 7,8-didemethyl derivative and an 8-isopropylriboflavin have been obtained. The synthesis of these compounds started in all cases from appropriately substituted anilines that were condensed
Conversion of a Dehalogenase into a Nitroreductase by Swapping its Flavin Cofactor with a 5-Deazaflavin Analogue
作者:Qi Su、Petrina A. Boucher、Steven E. Rokita
DOI:10.1002/anie.201703628
日期:2017.8.28
formation of the hydroxylamine intermediates. Efficient use of these enzymes also requires a regenerating system for NAD(P)H to avoid the costs associated with this natural reductant. Iodotyrosine deiodinase is a member of the same structural superfamily as many nitroreductases but does not directly consume reducing equivalents from NAD(P)H, nor demonstrate nitroreductase activity. However, exchange
Broadening the Scope of the Flavin‐Tag Method by Improving Flavin Incorporation and Incorporating Flavin Analogs
作者:Yapei Tong、Marnix R. Loonstra、Marco W. Fraaije
DOI:10.1002/cbic.202200144
日期:2022.6.3
Flavin-tag 2.0: The Flavin-tag method can be used for labelling of proteins with various chromo- and fluorophores and redox-active probes, including flavin (yellow), roseoflavin (red), 5-deazaflavin (fluorescent), and nicotinamide.
Deazaflavins as photocatalysts for the direct reductive regeneration of flavoenzymes
作者:M.M.C.H. van Schie、S.H.H. Younes、M.C.R. Rauch、M. Pesic、C.E. Paul、I.W.C.E. Arends、F. Hollmann
DOI:10.1016/j.mcat.2018.04.015
日期:2018.6
Deazaflavins are potentially useful redox mediators for the direct, nicotinamide-independent regeneration of oxidoreductases. Especially the O-2-stability of their reduced forms have attracted significant interest for the regeneration of monooxygenases.In this contribution we further investigate the photochemical properties of deazaflavins and investigate the scope and limitations of deazaflavin-based photoenzymatic reaction systems.