Abstract
The mammalian ras family consists of the Ha, Ki and N-ras genes that encode a series of 21,000 dalton proteins (p21). The three ras proteins participate in normal cell physiology and have been implicated in cellular transformation by either overexpression of the normal p21 or by mutation at positions 12, 13, or 61. To help understand the biological roles of the different ras proteins, we have generated monoclonal antibodies (Mabs) to the Ha-ras and N-ras p21. Mab Ha-770, raised to a Ha-specific synthetic peptide, reacts with Ha-ras recombinant p21 (r-p21) as well as cellular Ha-ras p21 by immunoprecipitation. Western blot and sandwich ELISA assays. Mab N-838, raised to an N-ras specific synthetic peptide, reacts with the N-ras recombinant p21 by immunoprecipitation, Western blot and sandwich ELISA assays. Mabs to the Ha-ras and N-ras p21 should be valuable reagents in assessing the individual roles of ras proteins in normal and neoplastic cells.
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