Mutants of Methylobacterium extorquens and Paracoccus denitrificans deficient in c-type cytochrome biogenesis synthesise the methylamine-dehydrogenase polypeptides but cannot assemble the tryptophan-tryptophylquinone group.

Abstract excerpt

Five mutants of Methylobacterium extorquens and four mutants of Paracoccus denitrificans that have a general defect in c-type cytochrome synthesis also failed to assemble an active methylamine dehydrogenase. In all cases methanol dehydrogenase, another periplasmic enzyme, was fully active. All nine mutant strains accumulated both the heavy and light subunits of methylamine dehydrogenase to essentially wild-type...

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