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  • Title: Amino-terminal variation in melanoma antigens.
    Author: Marchalonis JJ, Schwabe C, Gersten DM, Hearing VJ.
    Journal: Biochem Biophys Res Commun; 1984 May 31; 121(1):196-202. PubMed ID: 6732802.
    Abstract:
    Melanoma tumors express both common antigenic determinants and individually specific markers. A melanoma-specific glycoprotein antigen ( B700 ) with a molecular weight of approximately 65,000 daltons was detected on murine B16 melanoma cells but appears on other murine and human melanoma tumors. In order to determine the relationship between the B700 antigen and other melanoma antigens which have been described and to elucidate molecular changes that have taken place in the transformation from melanocyte to melanoma, we have purified the B700 glycoprotein to homogeneity. We have carried out amino acid composition analysis and partial sequence determinations and report that the B700 melanoma antigen shows similarities to serum albumin, but is not identical to this normal component. Moreover, amino-terminal variation occurs in the first 15 residues of the B700 antigen produced by separate B16 tumors.
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