NtcA regulates patA expression in Anabaena sp. strain PCC 7120.
نویسندگان
چکیده
patA expression is induced 3 to 6 h after nitrogen step-down. We establish that the transcription of patA is under the positive control of NtcA. The patA promoter region shows two conserved NtcA-binding boxes. These NtcA-binding sites and their interaction with NtcA are key elements for patA expression in heterocysts.
منابع مشابه
Regulation by hetC of genes required for heterocyst differentiation and cell division in Anabaena sp. strain PCC 7120.
Unlike those of the wild-type strain, proheterocysts of the Anabaena sp. strain PCC 7120 hetC strain keep dividing. ftsZ, the most critical cell division gene, is up-regulated in hetC proheterocysts. Heterocyst differentiation genes hglD, hglE, patB, nifB, and xisA are no longer expressed in the hetC mutant. hetC also regulates the expression of patA, a pattern formation gene.
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عنوان ژورنال:
- Journal of bacteriology
دوره 192 19 شماره
صفحات -
تاریخ انتشار 2010