Protein
F420-dependent glucose-6-phosphate dehydrogenase
Organism
Mycobacterium smegmatis (strain ATCC 700084 / mc(2)155)
Function
Catalyzes the coenzyme F420-dependent oxidation of glucose 6-phosphate (G6P) to 6-phosphogluconolactone. Appears to have a role in resistance to oxidative stress, via its consumption of G6P that serves as a source of reducing power to combat oxidative stress in mycobacteria. Cannot use NAD, NADP, FAD or FMN instead of coenzyme F420 as an electron acceptor. Exhibits nearly no activity with D-mannose-6-phosphate or D-fructose-6-phosphate as substrate.
Similarity
Belongs to the F420-dependent glucose-6-phosphate dehydrogenase family.
Sequence
MAELKLGYKASAEQFAPRELVELAVLAESAGMDSATVSDHFQPWRHEGGHAPFSLAWMTAVGERTKNLVLGTSVLTPTFRYNPAVIAQAFATMGCLYPGRIFLGVGTGEALNEIATGYAGEWPEFKERFARLRESVRLMRELWLGDRVDFDGEYYRTKGASIYDVPEGGIPVYIAAGGPVVAKYAGRAGDGFICTSGKGEELYAEKLIPAVKEGAAAADRDADAIDRMIEIKISYDTDPELALENTRFWAPLSLTAEQKHSIDDPIEMEKAADALPIEQVAKRWIVASDPDEAVEKVGQYVKWGLNHLVFHAPGHDQRRFLELFKRDLEPRLRKLA