Nejvíce citovaný článek - PubMed ID 4585940
Histone-induced changes of protein synthesis in Escherichia coli. II. Effect of histone on alkaline phosphatase synthesis
beta-Galactosidase and tryptophanase can be induced in Escherichia coli simultaneously or gradually during a batch cultivation. In the strain Escherichia coli K 12 and ML 30, in which the synthesis of the two enzymes was induced simultaneously, only the synthesis of tryptophanase partially decreased, whereas the synthesis of beta-galactosidase was not influenced. In the strains B 28 and ATCC 9637 the synthesis of both enzymes was partially decreased. On a gradual induction of these enzymes in the strain Escherichia coli K 12 only the synthesis of tryptophanase decreased. Thus, the results obtained here resemble those observed during the simultaneous induction. In addition, it was found that it is not important which of the two enzymes is induced as the first one.
- MeSH
- enzymová indukce MeSH
- Escherichia coli enzymologie růst a vývoj MeSH
- galaktosidasy biosyntéza MeSH
- lyasy biosyntéza MeSH
- thiogalaktosidy metabolismus MeSH
- tryptofan metabolismus MeSH
- tryptofanasa biosyntéza MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- galaktosidasy MeSH
- lyasy MeSH
- thiogalaktosidy MeSH
- tryptofan MeSH
- tryptofanasa MeSH
It was found that the externally added histone changes remarkably both the surface and the internal ultrastructure of cells of Escherichia coli. The interaction of histone with surface structures results in thickening of the inner layer of the cell wall. Cytoplasm becomes condensed, contains extensive electrontransport zones and neither ribosomes nor the nuclear structure are differentiated. The addition of histone to germinating spores of Bacillus cereus decelerates germination and postgerminative development of this organism and changes ultrastructure of the external surface of the exosporium. The addition of Mg2+ ions reverting the effect of histone results in a renewal of the original ultrastructure of the exosporium.
- MeSH
- Bacillus cereus růst a vývoj ultrastruktura MeSH
- buněčná membrána ultrastruktura MeSH
- buněčná stěna ultrastruktura MeSH
- cytoplazma ultrastruktura MeSH
- Escherichia coli růst a vývoj ultrastruktura MeSH
- histony farmakologie MeSH
- hořčík farmakologie MeSH
- spory bakteriální růst a vývoj ultrastruktura MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- histony MeSH
- hořčík MeSH
