Zusammenfassung
The devBCA operon, encoding subunits of an ATP-binding cassette exporter, is essential for differentiation of N-2-fixing heterocysts in Anabaena spp. Nitrogen deficiency-dependent transcription of the operon and the use of its transcriptional start point, located 762 (Anabaena variabilis strain ATCC 29413-FD) or 704 (Anabaena sp. strain PCC 7120) bp upstream of the translation start site, were ...
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