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Abstract
Several comparative genomic tools were used to determine the existence of chemiotaxis in ruminal bacteria. Comparative analysis of microbial genomes (database comprehensive microbial resource (CMR)) was used to search for a specific chemiotaxis gene. Then, short sequences of Ruminococcus albus were searched in the database of the National Center for Biotechnology Information, and compared them in the and Concise Microbial Protein. To predict the number of trans-membrane helices of the putative protein, the methyl-accepting chemotaxis proteins (MCP) program was used (TMpred and TopPred). For comparisons of putative protein structures in the MCP and chemotaxis protein, Simple Modular Architecture Research Tool and protein families database were used. Short sequences of the genome of R. albus revealed the presence of chemotaxis genes that could encode a chemoreceptor (MCP) and chemotaxis proteins. Groups of R. albus chemotaxis genes may be responsible for a diverse set of signalling functions, such as the formation of biofilm, adhesion and gene regulation.
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Acknowledgements
To the Consejo Nacional de Ciencia y Tecnología (CONACYT, studentship number 297534). To Gabriela Ruelas Inzunza for their help in translation into English of this article.