title: Cloning and nucleotide sequence of the gene encoding dinitrogenase reductase (nifH) from the cyanobacterium Nostoc 6720.
abstract: The nucleotide sequence of the 3' end of the nifU coding sequence, the complete coding sequence of nifH and a substantial part of the 5' end of nifD coding sequence from Nostoc 6720 is presented. The coding sequences are highly conserved with those of Anabaena 7120 and Anabaena sp. L31. However the intergenic region between nifU and nifH contains two segments of short tandemly repetitive repeat sequences (STRRs) that differ from the STRR that is common to both Anabaena7120 and Anabaenasp. L31. Various sequence structures that are common to Nostoc 6720, the Anabaena strains and Plectonema boryanum are discussed.
authors.affiliation: Department of Biological Sciences, I.E.B.S., Lancaster University, UK.
authors.forename: C E
authors.initials: CE
authors.lastname: Beesley
authors.forename: R J
authors.initials: RJ
authors.lastname: Smith
authors.forename: S J
authors.initials: SJ
authors.lastname: Temple
authors.forename: P J
authors.initials: PJ
authors.lastname: Lea
mesh_terms: D000595:Amino Acid Sequence; D001483:Base Sequence; D003001:Cloning, Molecular; D000458:Cyanobacteria / Q000235:genetics*; D017037:Dinitrogenase Reductase / Q000235:genetics*; D015964:Gene Expression Regulation, Bacterial; D005796:Genes; D005798:Genes, Bacterial; D008969:Molecular Sequence Data; D009586:Nitrogen Fixation / Q000235:genetics*; D011401:Promoter Regions, Genetic
chemical_list: D017037:Dinitrogenase Reductase