Irina V. Makarova

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DNA polymerase iota (Pol ι) which has some peculiar features and is characterized by an extremely error prone DNA synthesis, belongs to the group of enzymes preferentially activated by Mn2+ instead of Mg2+. In this work, using misGvA method (misincorporation of “G” versus “A”, method of Gening) we studied the effect of Mn2+ on DNA synthesis in cell extracts(More)
Analysis of incorrect activity of error-prone DNA polymerase iota in M. musculus ontogeny demonstrated considerable changes in its activity, which peaks in most organs during prenatal development and decreases in the adult body. We propose that the capacity of error-prone DNA polymerases to synthesize on damaged DNA regions is critical for the realization(More)
Electron microscopy was used to examine early zygotes from C57BL/6 mice aged 5-7 h after mating. A great number of intracisternal type A particles (IAP) in the cavity of smooth endoplasmic reticulum and in the large vesicles of the Golgi complex were demonstrated in ultrathin sections of any of the 70 embryos under examination. IAP were detected in(More)
Human DNA polymerase iota (Pol ι) is a Y-family DNA polymerase with unusual biochemical properties and not fully understood functions. Pol ι preferentially incorporates dGTP opposite template thymine. This property can be used to monitor Pol ι activity in the presence of other DNA polymerases, e.g. in cell extracts of tissues and tumors. We have now(More)
Human and mice nuclear extracts from livers and mice spleen extract were analysed in an attempt to find any proteins capable of binding to the human alpha 1-antitrypsin gene promoter. The nuclei of all studied tissues contain such proteins. The proteins were partially purified on DEAE-trisacryl, heparin sepharose and phosphocellulose columns. The multiple(More)
Previously, mouse zygotes were microinjected with the recombinant plasmid pMA3, which contains the Herpes simplex virus thymidine kinase gene attached to the promoter region of the Rous sarcoma virus (Gazaryan et al. 1984a). In the present work the pMA3 fragment with the flanking genomic sequences was isolated from the DNA of one transgenic Fo mouse by the(More)
Transcription of several families of moderately repeated sequences, conserved through the evolution of vertebrates, has been studied in different types of pigeon, chicken and mouse cells. It is shown both by hybridization with isolated RNA and by in situ hybridization that the families of repeats, dispersed in bird genomes and organized in clusters, are(More)