Escherichia coli acid resistance: pH-sensing, activation by chloride and autoinhibition in GadB
Gut, H., Pennacchietti, E., John, R.A., Bossa, F., Capitani, G., De Biase, D., Gruetter, M.G.(2006) EMBO J 25: 2643-2651
- PubMed: 16675957 
- DOI: 10.1038/sj.emboj.7601107
- Primary Citation of Related Structures:  
2DGK, 2DGL, 2DGM - PubMed Abstract: 
Escherichia coli and other enterobacteria exploit the H+ -consuming reaction catalysed by glutamate decarboxylase to survive the stomach acidity before reaching the intestine. Here we show that chloride, extremely abundant in gastric secretions, is an allosteric activator producing a 10-fold increase in the decarboxylase activity at pH 5 ...