title: [Mechanism of segregation of bacterial chromosomes following division of anaerobic clostridia].
abstract: Morphological events during division in Clostridium oedematiens, strains A-277 and A-79, were studied on ultrathin sections. The bacterial cells of the species under investigation containing numerous and various intracytoplasmic membranous structures were practically devoid of the "nuclear mesosomes" type structures. In these anaerobic Clostridia the segregation of bacterial chromosomes after the replication was effected by means of direct connections between the DNA filaments and the cytoplasmic membrane of the bacterial cell. These connections were multiple, up to 250 nm in length, possibly ensuring a proper mechanical strength needed for translocation of the chromosomes into the daughter cells. It is suggested that multiple contact zones between the cytoplasmic membrane and the DNA filaments of the bacterial chromosome arose after the triggering of their DNA replication.
mesh_terms: D002455:Cell Division; D002462:Cell Membrane / Q000648:ultrastructure; D002876:Chromosomes, Bacterial / Q000648:ultrastructure*; D003013:Clostridium / Q000648:ultrastructure*
vernacular_title: O mekhanizme segregatsii bakterial'nykh khromosom pri delenii anaerobnykh klostridiĭ.