FIELD: genetic engineering, in particular genes for cell cycle controlling point.
SUBSTANCE: polynucleotide encoding rad3 polypeptide ATR homologue is cloned into expression vector, having functionality in eucariotic cells. Polypeptide of rad3 polypeptide ATR homologue is obtained by cultivation of eucariotic cell culture, transformed by vector. Monoclonal antibody to rad3 polypeptide ATR homologue is obtained by hybridoma technologies. Polyclonal antibodies are obtained by inoculation of rad3 polypeptide ATR homologue in host animal. Polynucleotide presence in animal tissue sample is detected by contacting of this sample containing DNA or RNA with polynucleotide encoding rad3 polypeptide ATR homologue under hybridization conditions. Polypeptide in biological sample is detected by sample contact with monoclonal or polyclonal antibodies. Substances having anticancer activity are screened on the base of reduced activity of ATR polypeptide on substrate or reduced chelating of ATR homologue in presence of candidate substance. Present invention makes it possible to produce human or S.pombe rad3 polypeptide ATR homologue and is useful in investigation ATR role as gene for cell cycle controlling point in cell culture in vivo or in vitro.
EFFECT: new anticancer substances.
24 cl, 1 dwg
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