title: Distribution of the phosphoenolpyruvate:glucose phosphotransferase system in fermentative bacteria.
abstract: A number of selected fermentative bacteria were surveyed for the presence of the phosphoenolpyruvate:glucose phosphotransferase system, with particular attention to those organisms which ferment glucose by pathways other than the Embden-Meyerhof-Parnas pathway. The phosphoenolpyruvate:glusoe phosphotransferase system was found in all homofermentative lactic acid bacteria tested that ferment glucose via the Embden-Meyerhof-Parnas pathway, but in none of a group of heterofermentative species of Lactobacillus or Leuconostoc, which ferment glucose via the phosphoketolase pathway. A phosphoenolpyruvate:glucose phosphotransferase system was also absent in Zymomonas mobilis, which ferments glucose via an anaerobic Entner-Doudoroff pathway. It thus appears that the phosphotransferase mode of glucose transport is limited to bacteria with the Embden-Meyerhof-Parnas mode of glucose fermentation.
mesh_terms: D000255:Adenosine Triphosphate / Q000378:metabolism; D001419:Bacteria / Q000201:enzymology*; D003847:Deoxyglucose / Q000378:metabolism; D005947:Glucose / Q000378:metabolism*; D007778:Lactobacillus / Q000201:enzymology*; D007934:Leuconostoc / Q000378:metabolism; D009097:Multienzyme Complexes / Q000378:metabolism*; D010376:Pediococcus / Q000378:metabolism; D010728:Phosphoenolpyruvate; D010770:Phosphotransferases / Q000378:metabolism*; D013289:Streptococcaceae / Q000201:enzymology*; D013291:Streptococcus / Q000201:enzymology
chemical_list: D009097:Multienzyme Complexes; D010728:Phosphoenolpyruvate; D000255:Adenosine Triphosphate; D003847:Deoxyglucose; D010770:Phosphotransferases; D005947:Glucose