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© Research
Publication : Molecular biology reports

Comparison of interactions of 5′-derivatives of deoxyoctathymidylate with human DNA polymerize alpha and HIV reverse transcriptase

Team: Molecular Mechanisms of Pathological and Physiological Ageing
Team: Stem Cells And Development
Member: Miria Ricchetti
Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Molecular biology reports - 01 Jun 1993

Khodyreva SN, Podust VN, Sergeev DS, Ivanova EM, Frolova EI, Koshkin AA, Godovikova TS, Zarytova VF, Ricchetti M, Lavrik OI

Link to Pubmed [PMID] – 7694077

Mol. Biol. Rep. 1993 Jun;18(1):43-7

Km and Vmax values for d(pT8) and its derivatives containing various 5′-end groups were estimated in the reaction of DNA polymerization alpha catalyzed by DNA polymerase alpha and HIV-RT. The effect of 5′-end modification of primer is more pronounced in the case of HIV-RT. Strong influence is observed for an intercalating (ethidium) group. The affinity of EtpT8 is 200-fold higher than that of d(pT8). Attachment of Phn-, Dnm- and Hem-groups results in the increase of affinity of modified primer from 10 up to 20 times. For DNA polymerase alpha the influence of modifiers on primer affinity is much weaker. The effect of 5′-end residues on the Vmax values is also more pronounced for HIV RT. The way to improve selective interaction of oligonucleotide derivatives with the primer site of HIV RT is suggested.