期刊
FEMS MICROBIOLOGY LETTERS
卷 183, 期 1, 页码 23-29出版社
ELSEVIER SCIENCE BV
DOI: 10.1111/j.1574-6968.2000.tb08928.x
关键词
N-2 fixation; nitrogenase; oxygen; Tn5 mutagenesis; Azospirillum brasilense
类别
Disruption of an open reading frame (ORF) of 840 bp (280 amino acids; ORF280) in an Azospirillum brasilense Tn5 mutant resulted in a pleiotrophic phenotype. Besides an enhanced N-2-fixing capacity and altered expression pattern of a nifH-gusA fusion, growth on the charged polar amino acids glutamate and arginine was severely affected. ORF280, similar to previously identified ORFs present in Bradyrhizobium japonicum (ORF277), Paracoccus denitrificans (ORF278) and Rhodobacter capsulatus (ORF277), exhibits in its C-terminus a significant similarity with the recently defined Family of universal stress proteins. (C) 2000 Federation of European Microbiological Societies. Published by Elsevier Science B.V. All rights reserved.
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