期刊
JOURNAL OF BACTERIOLOGY
卷 201, 期 17, 页码 -出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/JB.00349-19
关键词
Anabaena; cell differentiation; metabolic balance; nitrogen fixation; transcriptional regulation
类别
资金
- Chinese Academy of Sciences [QYZDJ-SSW-SMC016]
The filamentous cyanobacterium Anabaena can form heterocysts specialized in N-2 fixation, mostly through a cascade of transcriptional activation in response to the nitrogen starvation signal 2-oxoglutarate. It is reported now that a transcription repressor, CalA, acts as a safety device to prevent heterocyst development under certain conditions where the 2-oxoglutarate level may touch the threshold to trigger unnecessary initiation of heterocyst development. Such a control may increase the fitness of Anabaena under a constantly changing environment.
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