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qdoI

Gene
qdoI
Protein
Quercetin 2,3-dioxygenase
Organism
Bacillus subtilis (strain 168)
Length
337 amino acids
Function
Performs the first step in the degradation of the flavonoid quercetin by a dioxygenase reaction. The enzyme catalyzes the cleavage of the O-heteroaromatic ring of the flavonol quercetin yielding the depside 2-protocatechuoyl-phloroglucinol carboxylic acid and carbon monoxide. This involves the remarkable dioxygenolytic cleavage of two carbon-carbon bonds.
Mass
37.6 kDa
Sequence
MKTLCTHSLPKEKMPYLLRSGEGERYLFGRQVATVMANGRSTGDLFEIVLLSGGKGDAFPLHVHKDTHEGILVLDGKLELTLDGERYLLISGDYANIPAGTPHSYRMQSHRTRLVSYTMKGNVAHLYSVIGNPYDHAEHPPYASEEVSNERFAEAAAVADIVFLDEAKPACSAKLAELTELPDGAVPYVLESGEGDRLLTGDQLHRIVAAQKNTDGQFIVVSSEGPKGDRIVDHYHEYHTETFYCLEGQMTMWTDGQEIQLNPGDFLHVPANTVHSYRLDSHYTKMVGVLVPGLFEPFFRTLGDPYEGHIFPCEPQALRFDRILQNIEALDLKVMKP