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Interaction of GapA with HPr and Its Homologue, Crh: Novel Levels of Regulation of a Key Step of Glycolysis in Bacillus subtilis? ^,

Laboratoire de Chimie Bactérienne, UPR 9043, IBSM-CNRS, 31 chemin Joseph Aiguier, 13402 Marseille cedex 20, France

Received 11 October 2006/ Accepted 14 November 2006

In Bacillus subtilis cells, we identified a new partner of HPr, an enzyme of the glycolysis pathway, the glyceraldehyde-3-phosphate dehydrogenase GapA. We showed that, in vitro, phosphorylated and unphosphorylated forms of HPr and its homologue, Crh, could interact with GapA, but only their seryl-phosphorylated forms were able to inhibit its activity.

Published ahead of print on 17 November 2006.

Supplemental material may be found at http://jb.asm.org/.

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