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MT1299

Gene
MT1299
Protein
F420H(2)-dependent quinone reductase MT1299
Organism
Mycobacterium tuberculosis (strain CDC 1551 / Oshkosh)
Length
149 amino acids
Function
Involved in a F420-dependent anti-oxidant mechanism that protects M.tuberculosis against oxidative stress and bactericidal agents. Catalyzes the F420H(2)-dependent two-electron reduction of quinones to dihydroquinones, thereby preventing the formation of cytotoxic semiquinones obtained by the one-electron reduction pathway. In vitro, catalyzes the reduction of menadione to menadiol; since menaquinone is the sole quinone electron carrier in the respiratory chain in M.tuberculosis, the physiological electron acceptor for Fqr-mediated F420H(2) oxidation is therefore likely to be the endogenous menaquinone found in the membrane fraction of M.tuberculosis.
Similarity
Belongs to the F420H(2)-dependent quinone reductase family.
Mass
16.756 kDa
Sequence
MDISRWLERHVGVQLLRLHDAIYRGTNGRIGHRIPGAPPSLLLHTTGAKTSQPRTTSLTYARDGDAYLIVASKGGDPRSPGWYHNLKANPDVEINVGPKRFGVTAKPVQPHDPDYARLWQIVNENNANRYTNYQSRTSRPIPVVVLTRR