PMID- 20044937 OWN - NLM STAT- MEDLINE DCOM- 20100506 LR - 20211020 IS - 1471-2091 (Electronic) IS - 1471-2091 (Linking) VI - 11 DP - 2010 Jan 3 TI - Cloning and characterization of Escherichia coli DUF299: a bifunctional ADP-dependent kinase--Pi-dependent pyrophosphorylase from bacteria. PG - 1 LID - 10.1186/1471-2091-11-1 [doi] AB - BACKGROUND: Phosphoenolpyruvate synthetase (PEPS; EC 2.7.9.2) catalyzes the synthesis of phosphoenolpyruvate from pyruvate in Escherichia coli when cells are grown on a three carbon source. It also catalyses the anabolic conversion of pyruvate to phosphoenolpyruvate in gluconeogenesis. A bioinformatics search conducted following the successful cloning and expression of maize leaf pyruvate, orthophosphate dikinase regulatory protein (PDRP) revealed the presence of PDRP homologs in more than 300 bacterial species; the PDRP homolog was identified as DUF299. RESULTS: This paper describes the cloning and expression of both PEPS and DUF299 from E. coli and establishes that E. coli DUF299 catalyzes both the ADP-dependent inactivation and the Pi-dependent activation of PEPS. CONCLUSION: This paper represents the first report of a bifunctional regulatory enzyme catalysing an ADP-dependent phosphorylation and a Pi-dependent pyrophosphorylation reaction in bacteria. FAU - Burnell, Jim N AU - Burnell JN AD - Department of Biochemistry and Molecular Biology, James Cook University, Townsville, Queensland 4811, Australia. James.Burnell@jcu.edu.au LA - eng PT - Journal Article DEP - 20100103 PL - England TA - BMC Biochem JT - BMC biochemistry JID - 101084098 RN - 0 (Escherichia coli Proteins) RN - 0 (Multienzyme Complexes) RN - 61D2G4IYVH (Adenosine Diphosphate) RN - 73-89-2 (Phosphoenolpyruvate) RN - 8558G7RUTR (Pyruvic Acid) RN - EC 2.7.- (Protein Kinases) RN - EC 2.7.11.33 (DUF299 protein, E coli) RN - EC 2.7.9.- (Phosphotransferases (Paired Acceptors)) RN - EC 2.7.9.1 (Pyruvate, Orthophosphate Dikinase) RN - EC 2.7.9.2 (pyruvate, water dikinase) RN - EC 3.1.3.2 (Phosphoric Monoester Hydrolases) SB - IM MH - Adenosine Diphosphate/*metabolism MH - Cloning, Molecular MH - Escherichia coli/*enzymology MH - Escherichia coli Proteins/classification/genetics/*metabolism MH - Gluconeogenesis MH - Multienzyme Complexes/classification/genetics/*metabolism MH - Phosphoenolpyruvate/metabolism MH - Phosphoric Monoester Hydrolases/classification/genetics/*metabolism MH - Phosphotransferases (Paired Acceptors)/classification/genetics/*metabolism MH - Phylogeny MH - Protein Kinases/classification/genetics/*metabolism MH - Pyruvate, Orthophosphate Dikinase/classification/genetics/metabolism MH - Pyruvic Acid/metabolism MH - Zea mays/enzymology PMC - PMC2817694 EDAT- 2010/01/05 06:00 MHDA- 2010/05/07 06:00 PMCR- 2010/01/03 CRDT- 2010/01/05 06:00 PHST- 2009/09/10 00:00 [received] PHST- 2010/01/03 00:00 [accepted] PHST- 2010/01/05 06:00 [entrez] PHST- 2010/01/05 06:00 [pubmed] PHST- 2010/05/07 06:00 [medline] PHST- 2010/01/03 00:00 [pmc-release] AID - 1471-2091-11-1 [pii] AID - 10.1186/1471-2091-11-1 [doi] PST - epublish SO - BMC Biochem. 2010 Jan 3;11:1. doi: 10.1186/1471-2091-11-1.