Mutational Analysis of the fruA Promoter Region Demonstrates that C-Box and 5-Base-Pair Elements Are Important for Expression of an Essential Developmental Gene of Myxococcus xanthus

AUTOR(ES)

Srinivasan, D.

FONTE

American Society for Microbiology

RESUMO

Myxococcus xanthus uses extracellular signals during development to regulate gene expression. C-signaling regulates the expression of many genes induced after 6 h into development. FruA is a protein that is necessary for cells to respond to C-signaling, but expression of the fruA gene does not depend on C-signaling. Yet the fruA promoter region has a C box and a 5-bp element, similar to the promoter regions of several C-signal-dependent genes, where these sequences are crucial. Here, we show that the C box and 5-bp elements are important for expression of fruA, demonstrating for the first time that these sequences play a role in the expression of a gene that does not depend on C-signaling and is required for M. xanthus development.

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