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Proteogenomic Study Of Nitrogen-Fixing Cyanobacterium Anabaena Cylindrica, Yeyan Qiu
Proteogenomic Study Of Nitrogen-Fixing Cyanobacterium Anabaena Cylindrica, Yeyan Qiu
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Cyanobacteria are gram-negative photosynthetic bacteria. In some filamentous cyanobacteria such as Anabaena cylindrica, every 10th to 20th vegetative cells can differentiate into nitrogen fixing heterocysts. Heterocyst can induce the neighboring cells developing into spore-like akinetes. The specialized cell functions and resourceful networks have contributed to the prosperity of cyanobacteria for over 2 billion years, but the genetic mechanisms for multi-cellular differentiation are barely known, especially for akinete formation. The heterocysts, akinetes and vegetative cells of Anabaena cylindrica were isolated for proteomic study. This study identified a total of 1395 proteins, including 664 proteins from akinetes, 751 proteins from …