Expression of PII and glutamine synthetase is regulated by PII, the ntrBC products, and processing of the glnBA mRNA in Rhodospirillum rubrum

被引:7
作者
Cheng, JJ [1 ]
Johansson, M [1 ]
Nordlund, S [1 ]
机构
[1] Stockholm Univ, Arrhenius Labs Nat Sci, Dept Biochem, S-10691 Stockholm, Sweden
关键词
D O I
10.1128/JB.181.20.6530-6534.1999
中图分类号
Q93 [微生物学];
学科分类号
071005 ; 100705 ;
摘要
We have studied the transcription of the glnB and glnA genes in Rhodospirillum rubrum with firefly luciferase as a reporter enzyme. Under NH4+ and N-2 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.
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收藏
页码:6530 / 6534
页数:5
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