Intracellular organization of bacteriophage T7 DNA: analysis of parenteral bacteriophage T7 DNA-membrane and DNA-protein complexes.
AUTOR(ES)
Hiebsch, R
RESUMO
After infection of Escherichia coli with bacteriophage T7, the parenteral DNA forms a stable association with host cell membranes. The DNA-membrane complex isolated in cesium chloride gradients is free of host DNA and the bulk of T7 RNA. The complex purified through two cesium chloride gradients contains a reproducible set of proteins which are enriched in polypeptides having molecular weights of 54,000, 34,000, and 32,000. All proteins present in the complex are derived from host membranes. Treatment of the complex with Bruij-58 removes 95% of the membrane lipid and selectively releases certain protein components. The Brij-treated complex has an S value of about 1,000 and the sedimentation rate of this material is not altered by treatment with Pronase or RNase.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=515744Documentos Relacionados
- Bacteriophage T7 DNA Synthesis in Isolated DNA-Membrane Complexes
- Studies on an Endonuclease Activity Associated with the Bacteriophage T7 DNA-Membrane Complex
- Multidimensional analysis of intracellular bacteriophage T7 DNA: effects of amber mutations in genes 3 and 19.
- Characterization of DNA-protein complexes from simian adenovirus SA7.
- Inactivation of phage T7 by near-ultraviolet radiation plus hydrogen peroxide: DNA-protein crosslinks prevent DNA injection.
