Characteristics of the interactions of cortisol-apolipoprotein A-I and tetrahydrocortisol-apolipoprotein A-I complexes with eukaryotic DNA
Primary hepatocyte culture has been used to demonstrate that the cortisol-apolipoprotein A-I complex does not affect the DNA and protein biosynthesis rates, whereas the tetrahydrocortisol-apolipoprotein A-I complex (THC-apoA-I) substantially increases the rates of super(3)H-thymidine and super(14)C-...
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| Veröffentlicht in: | Molecular biology (New York) 2006-03, Vol.40 (2), p.261-269 |
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| creator | Panin, L E Tuzikov, F V Tuzikova, N A Polyakov, L M |
| description | Primary hepatocyte culture has been used to demonstrate that the cortisol-apolipoprotein A-I complex does not affect the DNA and protein biosynthesis rates, whereas the tetrahydrocortisol-apolipoprotein A-I complex (THC-apoA-I) substantially increases the rates of super(3)H-thymidine and super(14)C-leucine incorporation into DNA and protein, respectively. Small-angle X-ray scattering data show that only THC-apoA-I effectively interacts with eukaryotic DNA, which is accompanied by local DNA melting. The (GCC) sub(n) repeat, a component of many human and other eukaryotic genes, is the most probable region of the interaction of this complex with DNA. An oligonucleotide (duplex) of this type has been synthesized. Its interaction with THC-apoA-I yields a larger complex, which breaks up, giving rise to complementary oligonucleotide strands. They also interact with THC-apoA-I. The equilibrium kinetics of this multiphase process is described. The interaction of the cortisol-apolipoprotein A-I complex with the duplex is less specific and does not cause its breakup or the formation of complementary oligonucleotides. |
| doi_str_mv | 10.1134/S0026893306020129 |
| format | Article |
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Small-angle X-ray scattering data show that only THC-apoA-I effectively interacts with eukaryotic DNA, which is accompanied by local DNA melting. The (GCC) sub(n) repeat, a component of many human and other eukaryotic genes, is the most probable region of the interaction of this complex with DNA. An oligonucleotide (duplex) of this type has been synthesized. Its interaction with THC-apoA-I yields a larger complex, which breaks up, giving rise to complementary oligonucleotide strands. They also interact with THC-apoA-I. The equilibrium kinetics of this multiphase process is described. 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| subjects | Apolipoprotein A Apolipoprotein A-I Apolipoproteins Cortisol Data processing Deoxyribonucleic acid DNA DNA biosynthesis Hepatocytes Hormones Kinetics Melting Oligonucleotides Protein biosynthesis Thymidine X-ray scattering |
| title | Characteristics of the interactions of cortisol-apolipoprotein A-I and tetrahydrocortisol-apolipoprotein A-I complexes with eukaryotic DNA |
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