Evidence that the PatB (CnfR) factor acts as a direct transcriptional regulator to control heterocyst development and function in the cyanobacterium Nostoc PCC 7120
Abstract:Under nitrogen‐limiting conditions, the filamentous cyanobacterium Nostoc PCC7120 differentiates nitrogen‐fixing heterocysts at semi‐regular intervals along filaments generating a periodic pattern of two distinct cell types. Heterocysts are micro‐oxic cells that host the oxygen‐sensitive nitrogenase allowing two antagonistic activities to take place simultaneously. Although several factors required to control the differentiation process are known, the molecular mechanisms engaged have only been elucidated for … Show more
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