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Appl Environ Microbiol. 1988 July; 54(7): 1842-1847

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

Bernhard-Nocht-Institut für Schiffs- und Tropenkrankheiten, Abteilung für Biochemie, Hamburg, Federal Republic of Germany.

ABSTRACT

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 acid as growth substrate. Regioselective 1,2-dioxygenation effected desulfonation and catabolism to 5-sulfosalicylic acid (5SS), which also could be used as the sole carbon source. 5SS-grown cells exhibited high gentisate 1,2-dioxygenase activity. Neither 5SS- nor gentisate-grown cells oxidized 2,6NDS; therefore, 2,6NDS or an early metabolite must serve as an inducer of the initial catabolic enzyme(s).

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