Conserved pyridoxal protein that regulates Ile and Val metabolism.

Escherichia coli YggS is a member of the highly conserved uncharacterized protein family that binds pyridoxal 5'-phosphate (PLP). To assist with the functional assignment of the YggS family, in vivo and in vitro analyses were performed using a yggS-deficient E. coli strain (ΔyggS) and a purified form of YggS, respectively.

The implication of YggT of Escherichia coli in osmotic regulation.

An Escherichia coli mutant lacking three major K(+) uptake systems, Trk, Kup, and Kdp, did not grow under low K(+)and high Na(+) concentrations. The introduction of fkuA and of fkuB of a marine bacterium, Vibrio alginolyticus, has been reported to compensate for the growth defect by accelerating the rate of K(+) uptake (Nakamura, Katoh, Shimizu, Matsuba, and Unemoto, Biochim. Biophys.