title: Mesosome structure in Chromobacterium violaceum.
abstract: Exponentially growing cells of the gram-negative bacterium Chromobacterium violaceum demonstrate invaginations of the cytoplasmic membrane with a high frequency. These invaginations conform to the ultrastructural appearance of mesosomes of gram-positive bacteria. As many as four mesosomes are observed per cell, each of which may increase the total membrane surface of the cell by 30%. Washing of cells in dilute tris(hydroxymethyl)aminomethane buffer effects a distension of the mesosome "neck" and/or cytoplasmic membrane clarifying the association of the mesosome to the cytoplasmic membrane. Plasmolysis effects an eversion of the mesosome into the plasmolysis vacuole.
mesh_terms: D002021:Buffers; D002455:Cell Division; D002861:Chromobacterium / Q000166:cytology*; D003593:Cytoplasm; D008854:Microscopy, Electron; D008954:Models, Biological; D009940:Organoids; D009995:Osmosis; D013395:Sucrose; D014325:Tromethamine
chemical_list: D002021:Buffers; D014325:Tromethamine; D013395:Sucrose