title: [Antibiotic activity and heterogeneity of a population of Azotobacter chroococcum].
abstract: Antibiotic activity of Azotobacter chroococcum was determined depending on the morphological composition of the population. The population was divided by the sedimentary properties into 2 fractions: heavy (H) and light (L). A higher amount of azochroomycin (up to 170%) could be extracted from the H-fraction consisting mainly of medium size cells (1.3-1.9 nm in diameter) as compared to that from the L-fraction consisting predominantly of the cells of 0.7-1.3 nm in diameter; the activity of the L-fraction counted as 100%.
authors.lastname: Pozmogova
authors.forename: G L
authors.initials: GL
authors.lastname: Gerasimova
authors.forename: N V
authors.initials: NV
authors.lastname: Sadovova
authors.forename: M P
authors.initials: MP
authors.lastname: Khovrychev
mesh_terms: D000900:Anti-Bacterial Agents / Q000096:biosynthesis*; D001395:Azotobacter / Q000254:growth & development* / Q000302:isolation & purification / Q000378:metabolism; D001431:Bacteriological Techniques; D005591:Chemical Fractionation
chemical_list: D000900:Anti-Bacterial Agents
vernacular_title: Antibioticheskaia aktivnost' i geterogennost' populiatsii Azotobacter chroococcum.