title: Sequence, topography and protein coding potential of mouse int-2: a putative oncogene activated by mouse mammary tumour virus.
abstract: A major proportion of carcinomas induced by mouse mammary tumour virus (MMTV) show evidence for proviral activation of a cellular gene, int-2, on chromosome 7. The sequence of 7869 bp of DNA spanning the transcription unit of int-2 was determined and compared with that of a series of int-2-specific cDNA clones derived from mammary tumour RNA. The predicted positions of intron-exon boundaries, established by alignment of cDNA and chromosomal DNA sequences, indicate that the gene comprises at least three exons. An open reading frame capable of encoding a protein of 245 amino acids with an estimated mol. wt of 27 kd, is flanked by substantial non-coding segments at both 5' and 3' ends. Comparison of the chromosomal DNA sequence and the predicted amino acid sequence with available data-bases has revealed no homology to other known genes. These results are discussed in relation to the status of int-2 as a candidate proto-oncogene.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002471:Cell Transformation, Neoplastic; D002874:Chromosome Mapping; D003001:Cloning, Molecular; D004247:DNA / Q000032:analysis; D005796:Genes; D008324:Mammary Tumor Virus, Mouse / Q000235:genetics*; D051379:Mice; D009363:Neoplasm Proteins / Q000235:genetics*; D009857:Oncogenes; D012334:RNA, Neoplasm / Q000302:isolation & purification; D014158:Transcription, Genetic
chemical_list: D009363:Neoplasm Proteins; D012334:RNA, Neoplasm; D004247:DNA