title: Immunocytochemical localization of glycolytic and fermentative enzymes in Zymomonas mobilis.
abstract: Gold-labeled antibodies were used to examine the subcellular locations of 11 glycolytic and fermentative enzymes in Zymomonas mobilis. Glucose-fructose oxidoreductase was clearly localized in the periplasmic region. Phosphogluconate lactonase and alcohol dehydrogenase I were concentrated in the cytoplasm near the plasma membrane. The eight remaining enzymes were more evenly distributed within the cytoplasmic matrix. Selected enzyme pairs were labeled on opposite sides of the same thin section to examine the frequency of colocalization. Results from these experiments provide evidence that glyceraldehyde-3-phosphate dehydrogenase, phosphoglycerate kinase, and alcohol dehydrogenase I form an enzyme complex.
authors.affiliation: Department of Microbiology and Cell Science, University of Florida, Gainesville 32611-0116.
authors.forename: H C
authors.initials: HC
authors.lastname: Aldrich
authors.forename: L
authors.initials: L
authors.lastname: McDowell
authors.forename: M F
authors.initials: MF
authors.lastname: Barbosa
authors.forename: L P
authors.initials: LP
authors.lastname: Yomano
authors.forename: R K
authors.initials: RK
authors.lastname: Scopes
authors.forename: L O
authors.initials: LO
authors.lastname: Ingram
mesh_terms: D000426:Alcohol Dehydrogenase / Q000032:analysis; D001731:Bisphosphoglycerate Mutase / Q000032:analysis; D002265:Carboxylic Ester Hydrolases / Q000032:analysis; D005285:Fermentation; D005987:Glyceraldehyde-3-Phosphate Dehydrogenases / Q000032:analysis; D006019:Glycolysis; D006089:Gram-Negative Anaerobic Bacteria / Q000201:enzymology* / Q000648:ultrastructure; D006836:Hydro-Lyases / Q000032:analysis; D007527:Isoenzymes / Q000032:analysis; D016253:Microscopy, Immunoelectron; D010088:Oxidoreductases / Q000032:analysis; D010736:Phosphoglycerate Mutase / Q000032:analysis; D010751:Phosphopyruvate Hydratase / Q000032:analysis; D011767:Pyruvate Decarboxylase / Q000032:analysis; D011770:Pyruvate Kinase / Q000032:analysis; D013347:Subcellular Fractions / Q000201:enzymology / Q000648:ultrastructure
chemical_list: D007527:Isoenzymes; D010088:Oxidoreductases; D000426:Alcohol Dehydrogenase; C074291:glucose-fructose oxidoreductase; D005987:Glyceraldehyde-3-Phosphate Dehydrogenases; D011770:Pyruvate Kinase; D002265:Carboxylic Ester Hydrolases; C022363:6-phosphogluconolactonase; D011767:Pyruvate Decarboxylase; D006836:Hydro-Lyases; D010751:Phosphopyruvate Hydratase; C022362:phosphogluconate dehydratase; D010736:Phosphoglycerate Mutase; D001731:Bisphosphoglycerate Mutase