The restoration of pre-stimulus levels of the chemotactic response regulator, CheY-P, is important for allowing bacteria to respond to new environmental stimuli. The members of this family, CheC, CheX, CheA and FliY are CheY-P phosphatase [1,2]. CheC appears to be primarily involved in restoring normal CheY-P levels, whereas FliY seems to act on CheY-P constitutively. CheD enhances the activity of CheC 5-fold, which is normally relatively low [1,2]. In some cases, the region represented by this entry is present as multiple copies.

1: Bacillus subtilis CheC and FliY are members of a novel class of CheY-P-hydrolyzing proteins in the chemotactic signal transduction cascade. Szurmant H, Muff TJ, Ordal GW; J Biol Chem 2004;279:21787-21792. PMID:14749334

2: Diversity in chemotaxis mechanisms among the bacteria and archaea. Szurmant H, Ordal GW; Microbiol Mol Biol Rev 2004;68:301-319. PMID:15187186