title: Identification of the nifJ gene coding for pyruvate: ferredoxin oxidoreductase in dinitrogen-fixing cyanobacteria.
abstract: A 329 bp DNA segment from both Anabaena variabilis and Anabaena PCC 7119 was amplified using the polymerase chain reaction (PCR). The sequences from the two cyanobacteria showed strong similarities to the corresponding part of the nifJ gene from Klebsiella pneumoniae and Enterobacter agglomerans. The present findings underline earlier results of enzymatic studies that heterocystous cyanobacteria possess a pyruvate:ferredoxin (flavodoxin) oxidoreductase (PFO). The nifJ gene segment could not be detected in the non-dinitrogen-fixing, unicellular cyanobacterium Anacystis nidulans which is also in accord with previous findings from enzyme assays.
authors.affiliation: Botanisches Institut, Universität zu Köln, Germany.
authors.forename: O
authors.initials: O
authors.lastname: Schmitz
authors.forename: T
authors.initials: T
authors.lastname: Kentemich
authors.forename: W
authors.initials: W
authors.lastname: Zimmer
authors.forename: B
authors.initials: B
authors.lastname: Hundeshagen
authors.forename: H
authors.initials: H
authors.lastname: Bothe
mesh_terms: D000595:Amino Acid Sequence; D017033:Anabaena / Q000201:enzymology / Q000235:genetics*; D001483:Base Sequence; D015139:Blotting, Southern; D000458:Cyanobacteria / Q000201:enzymology / Q000235:genetics*; D004269:DNA, Bacterial / Q000737:chemistry / Q000302:isolation & purification; D005798:Genes, Bacterial; D007658:Ketone Oxidoreductases / Q000235:genetics*; D008969:Molecular Sequence Data; D009586:Nitrogen Fixation / Q000235:genetics*; D009838:Oligodeoxyribonucleotides / Q000737:chemistry; D016133:Polymerase Chain Reaction; D050743:Pyruvate Synthase; D015183:Restriction Mapping; D016415:Sequence Alignment; D017386:Sequence Homology, Amino Acid; D012689:Sequence Homology, Nucleic Acid
chemical_list: D004269:DNA, Bacterial; D009838:Oligodeoxyribonucleotides; D007658:Ketone Oxidoreductases; D050743:Pyruvate Synthase