Expression of PII and Glutamine Synthetase Is Regulated by PII, the ntrBC Products, and Processing of the glnBA mRNA in Rhodospirillum rubrum
AUTOR(ES)
Cheng, Jiujun
FONTE
American Society for Microbiology
RESUMO
We have studied the transcription of the glnB and glnA genes in Rhodospirillum rubrum with firefly luciferase as a reporter enzyme. Under NH4+ and N2 conditions, glnBA was cotranscribed from a weak and a strong promoter. In nitrogen-fixing cultures, activity of the latter was highly enhanced by NtrC, but transcription from both promoters occurred under both conditions. There is no promoter controlling transcription of glnA alone, supporting our proposal that the glnA mRNA is produced by processing.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=103791Documentos Relacionados
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