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Rv1771

Gene
Rv1771
Protein
L-gulono-1,4-lactone dehydrogenase
Organism
Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
Length
428 amino acids
Function
Oxidizes L-gulono-1,4-lactone to L-xylo-hexulonolactone which spontaneously isomerizes to L-ascorbate. Can use both cytochrome c and phenazine methosulfate as exogenous electron acceptors, but molecular oxygen does not serve as a substrate. Is very specific for the L-gulono-1,4-lactone substrate, since it can not oxidize L-galactono-1,4-lactone, D-glucurono-3,6-lactone, D-glucuronate, D-arabinose, or D-xylose.
Similarity
Belongs to the oxygen-dependent FAD-linked oxidoreductase family.
Mass
48.045 kDa
Sequence
MSPIWSNWPGEQVCAPSAIVRPTSEAELADVIAQAAKRGERVRAVGSGHSFTDIACTDGVMIDMTGLQRVLDVDQPTGLVTVEGGAKLRALGPQLAQRRLGLENQGDVDPQSITGATATATHGTGVRFQNLSARIVSLRLVTAGGEVLSLSEGDDYLAARVSLGALGVISQVTLQTVPLFTLHRHDQRRSLAQTLERLDEFVDGNDHFEFFVFPYADKALTRTMHRSDEQPKPTPGWQRMVGENFENGGLSLICQTGRRFPSVAPRLNRLMTNMMSSSTVQDRAYKVFATQRKVRFTEMEYAIPRENGREALQRVIDLVRRRSLPIMFPIEVRFSAPDDSFLSTAYGRDTCYIAVHQYAGMEFESYFRAVEEIMDDYAGRPHWGKRHYQTAATLRERYPQWDRFAAVRDRLDPDRVFLNDYTRRVLGP