The mode of action of l,2-benzisothiazolin-3-one on Staphylococcus aureus

1,2-benzisothiazolin-3-one (BIT), at growth inhibitory concentrations, has little effect on membrane integrity but significantly inhibits the active transport and oxidation of glucose by washed Staphylococcus aureus cells. The dependancy of these metabolic processes on thiol-containing enzymes and the observed interaction of BIT with glutathione and isolated enzyme preparations suggests that cellular thiol groups are a major target for BIT.     

Status of the nuclear matrix in mature and embryonic chick erythrocyte nuclei

The adult chicken erythrocyte nucleus was found to lack an internal nuclear matrix: even milder extraction procedures resulted in the production of empty shells of pore complex-lamina together with loose aggregates of core histone. In contrast, rat liver nuclei showed a typical intranuclear salt-resistant skeleton. These results show that an internal matrix is not an obligatory nuclear component, and is not required for the spatial organization of chromatin. 5-day-old embryonic erythrocytes did, however, contain an interchromatinic nuclear matrix, suggesting a correlation between the presence of matrix structures, and nuclear 'activity'.