title: Deoxyribonucleic acid in Nitrobacter carboxysomes.
abstract: Carboxysomes were isolated from Nitrobacter winogradskyi and Nitrobacter agilis. The icosahedral particles contained double-stranded deoxyribonucleic acid (DNA). In the presence of ethidium bromide and cesium chloride, the particle-bound DNA had a buoyant density of rho 25 = 1.701 g/cm3. Electron microscopy revealed the DNA to be a 14-micron circular molecule.
mesh_terms: D002499:Centrifugation, Density Gradient; D004269:DNA, Bacterial / Q000032:analysis*; D004270:DNA, Circular / Q000032:analysis*; D002479:Inclusion Bodies / Q000032:analysis*; D009576:Nitrobacter / Q000032:analysis / Q000648:ultrastructure*
chemical_list: D004269:DNA, Bacterial; D004270:DNA, Circular