title: [Exopolysaccharide and proteolytic enzyme synthesis by M-, S- and R-forms of Mycobacterium lacticolum].
abstract: The composition of exocellular polysaccharides was studied in the M, S and R variants of Mycobacterium lacticolum 104. The exoglycans of the M and S variants were found to be rather similar but differ considerably from the exoglycan of the R form. The polysaccharides of the M and S cells contained glucose, mannose, galactose, and pyruvic acid; the exoglycan of the R cells contained also the fourth sugar arabinose, but lacked pyruvic acid. The specific rotation of the polysaccharides from the M, S and R variants ([alpha]d20), respectively, was +207.5, +168.0 and +25.0. The caseinolytic activity of the M, S and R variants, respectively, by the seventh day of growth was 0.93+/-0.21, 0.62+/-0.07 and 0.47+/-0.07 units/ml.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D009161:Mycobacterium / Q000201:enzymology / Q000378:metabolism*; D010447:Peptide Hydrolases / Q000096:biosynthesis*; D011135:Polysaccharides, Bacterial / Q000096:biosynthesis*
chemical_list: D011135:Polysaccharides, Bacterial; D010447:Peptide Hydrolases
vernacular_title: Sintez ékzopolisakharidov i proteoliticheskikh fermentov M-, S- i R-formami Mycobacterium lacticolum.