Reversible receptor methylation is essential for normal chemotaxis of Escherichia coli in gradients of aspartic acid.

The chemotaxis of wild-type cells of Escherichia coli and double mutants lacking the methyltransferase and the methylesterase activities of the receptor modification system has been compared in spatial gradients of aspartic acid. Previous studies showing that a chemotactic response can be observed for the mutant raised questions about the role of… CONTINUE READING