Bacterial-type ferredoxin genes in the nitrogen fixation regions of the cyanobacterium Anabaena sp. strain PCC 7120 and Rhizobium meliloti

Author:

Mulligan M E1,Buikema W J1,Haselkorn R1

Affiliation:

1. Department of Molecular Genetics and Cell Biology, University of Chicago, Illinois 60637.

Abstract

The nucleotide sequence of a region located downstream of the nifB gene, both in the cyanobacterium Anabaena sp. strain PCC 7120 and in Rhizobium meliloti, has been determined. This region contains a gene (fdxN) whose predicted polypeptide product strongly resembles typical bacterial ferredoxins. Cyanobacteria have not previously been shown to contain bacterial-type ferredoxins. The presence of this gene suggests that nitrogen-fixing cyanobacteria have at least four distinct ferredoxins.

Publisher

American Society for Microbiology

Subject

Molecular Biology,Microbiology

Reference28 articles.

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