Degradation of naphthalene-2,6- and naphthalene-1,6-disulfonic acid by a Moraxella sp.

摘要: A naphthalene-2,6-disulfonic acid (2,6NDS)-degrading Moraxella strain was isolated from an industrial sewage plant. This culture could also be adapted to naphthalene-1,6-disulfonic as growth substrate. Regioselective 1,2-dioxygenation effected desulfonation and catabolism 5-sulfosalicylic (5SS), which used the sole carbon source. 5SS-grown cells exhibited high gentisate 1,2-dioxygenase activity. Neither 5SS- nor gentisate-grown oxidized 2,6NDS; therefore, 2,6NDS or early metabolite must serve inducer of initial catabolic enzyme(s).