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      The chronic myelogenous leukemia-specific P210 protein is the product of the bcr/abl hybrid gene.

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          Abstract

          Chronic myelogenous leukemia (CML) is a human disease associated with a consistent chromosomal translocation that results in sequences from the c-abl locus on chromosome 9 being fused to sequences in a breakpoint cluster region (bcr) on chromosome 22. CML cells have two novel products: an 8.5-kilobase RNA transcript containing both abl and bcr and a 210-kilodalton phosphoprotein (P210) recognized by v-abl-specific antisera. To test whether the P210 is the product of the novel 8.5-kilobase bcr/abl fusion transcript, antibodies were prepared against c-abl and bcr determinants. By using these reagents and v-abl-specific antisera, it was demonstrated that the P210 in CML cells is indeed the protein product of the 8.5-kilobase transcript. By analogy to the gag/abl fusion protein of Abelson murine leukemia virus, the replacement of amino terminal c-abl sequences by bcr sequences in P210 may create a transforming protein involved in CML. A 190-kilodalton phosphoprotein that is a candidate for the normal bcr protein was identified in both HeLa and K562 cells.

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          Author and article information

          Journal
          Science
          Science (New York, N.Y.)
          American Association for the Advancement of Science (AAAS)
          0036-8075
          0036-8075
          Jul 11 1986
          : 233
          : 4760
          Article
          10.1126/science.3460176
          3460176
          5ffd901a-da30-45a9-8d17-99a6d5417b83
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