1.14.14.21 FADH2 - 735785 1.14.14.21 FMNH2 - 392304, 658301, 735524, 735525, 735526, 735527, 735585, 735785, 735798, 735833, 736146, 736522, 736585, 736855, 737211 1.14.14.21 FMNH2 enzyme DszC-FMN crystal structure analysis, FMN-binding site, binding structure and mechanism, modeling, overview 736092 1.14.14.21 FMNH2 reduced FMN reacts with an oxygen molecule at C4a position of the isoalloxazine ring, producing the C4a-(hydro)peroxyflavin intermediate which is stabilized by residues H391 and S163. H391 may contribute to the formation of the C4a-(hydro)peroxyflavin by acting as a proton donor to the proximal peroxy oxygen, and it might also be involved in the protonation process of C4a-(hydro)peroxyflavin, molecular docking simulation and modeling, overview 737210 1.14.14.21 FMNH2 the enzyme binds one flavin mononucleotide or reduced flavin mononucleotide (FMNH2) per 90,200-Da homodimer, and FMNH2 is an essential cosubstrate for its activity 736340 1.14.14.21 FMNH2 the reduced form of flavin serves as a substrate of DszC 735584 1.14.14.21 additional information FAD and lumiflavin have only weak activity as reducing agents 735526 1.14.14.21 additional information flavin reductaseFRP is essentially required for enzyme activity providing reduction equivalents, Vibrio harveyi FRP produces FMNH2 at the expense of NADPH and is used to provide FMNH2 for the enzymatic reaction 736340 1.14.14.21 additional information flavin specificity, overview. No activity with FADH2 736340 1.14.14.21 additional information FMN oxidoreductase TdsD, a NADH-dependent FMN oxidoreductase, absolutely required for TdsC activity, maximum activity is obtained at a TdsD/TdsC molar ratio of 0.5, no activity in the absence of TdsD 735526