title: The 5' extremity of the v-ets oncogene of avian leukemia virus E26 encodes amino acid sequences not derived from the major c-ets-encoded cellular proteins.
abstract: Antibodies were prepared against bacterially expressed polypeptides corresponding to various portions of the v-ets-encoded domain of P135gag-myb-ets, the transforming protein of avian leukemia virus E26. Immunoprecipitation analyses show that ca. 80 v-ets-encoded amino-acids located immediately after the v-myb/v-ets junction are not found in P54/56c-ets, the translation product of the c-ets proto-oncogene, nor in a set of cellular proteins of 64, 62, and 60 kDa related to but distinct from P54/56c-ets. In addition, Northern blot analyses show that these 5' v-ets sequences neither derive from the nontranslated region of the known cellular transcripts hybridizing to a v-ets probe nor from the c-myb transcript or the helper virus genetic information. Tryptic peptide analyses furthermore indicate that, except for these sequences and the last 16 carboxy terminal amino acids of P135gag-myb-ets, the amino acids encoded by v-ets are essentially colinear with those of P54c-ets.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001354:Avian Leukosis Virus / Q000235:genetics*; D002471:Cell Transformation, Neoplastic; D002645:Chickens; D005796:Genes; D005814:Genes, Viral; D009857:Oncogenes; D014158:Transcription, Genetic; D014764:Viral Proteins / Q000235:genetics*
chemical_list: D014764:Viral Proteins