Arginine-agmatine antiporter in extreme acid resistance in Escherichia coli.

  title={Arginine-agmatine antiporter in extreme acid resistance in Escherichia coli.},
  author={Ram Venkataraman Iyer and Carole Williams and Christopher Miller},
  journal={Journal of bacteriology},
  volume={185 22},
The process of arginine-dependent extreme acid resistance (XAR) is one of several decarboxylase-antiporter systems that protects Escherichia coli and possibly other enteric bacteria from exposure to the strong acid environment of the stomach. Arginine-dependent acid resistance depends on an intracellular proton-utilizing arginine alpha-decarboxylase and a membrane transport protein necessary for delivering arginine to and removing agmatine, its decarboxylation product, from the cytoplasm. The… CONTINUE READING