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J. Bacteriol., 05 1995, 2908-2911, Vol 177, No. 10
Copyright © 1995, American Society for Microbiology

A ferredoxin, designated FdxP, stimulates p-hydroxybenzoate hydroxylase activity in Caulobacter crescentus

SP Wang, YP Chen and B Ely
Department of Biological Sciences, University of South Carolina, Columbia 29208, USA.

A gene, fdxP, was identified upstream of the rrnA gene in Caulobacter crescentus and shown to encode ferredoxin II (FdII) by insertional inactivation. FdII is homologous to a class of [2Fe-2S] ferredoxins typified by putidaredoxin. Furthermore, reconstitution assays demonstrated that FdII was able to promote p-hydroxybenzoate hydroxylase activity in ferredoxin-depleted extracts. Thus, biodegradation of p-hydroxybenzoate may be ferredoxin dependent in C. crescentus.




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