1.
FEMS Microbiol Lett
; 115(1): 57-62, 1994 Jan 01.
Artigo
em Inglês
| MEDLINE
| ID: mdl-8125248
RESUMO
The regulatory sequences of Azospirillum brasilense Sp7 nifH gene were fused with the cam reporter gene and used for studying the factors controlling nifH transcription. A DNA sequence, downstream the ATG codon of nifH, that could be involved in the negative regulation of nifH transcription, was identified. The effect of 1 and 2 mM of ammonium on the transcription of the A. brasilense nifH gene and on the nitrogenase activity, in the presence of the Klebsiella pneumoniae NifA protein, was examined.