title: The human c-Kirsten ras gene is activated by a novel mutation in codon 13 in the breast carcinoma cell line MDA-MB231.
abstract: We have detected amplified human Ki-ras sequences in tumorigenic NIH 3T3 cells transfected with genomic DNA from the human breast carcinoma cell line MDA-MB231. Hybridization of synthetic oligonucleotides specific for human Ki-ras sequences showed a mutation at codon 13. The polymerase chain reaction with Ki-ras specific amplimers revealed a guanosine to adenosine transition at the second position of codon 13, resulting in a substitution of glycine by aspartic acid. The codon 13 mutation is also detected in one Ki-ras allele of the MDA-MB231 cell line.
mesh_terms: D000818:Animals; D001483:Base Sequence; D001943:Breast Neoplasms / Q000235:genetics*; D002460:Cell Line; D003062:Codon; D005260:Female; D005784:Gene Amplification; D006801:Humans; D051379:Mice; D009154:Mutation; D011519:Proto-Oncogenes; D012333:RNA, Messenger; D014162:Transfection
chemical_list: D003062:Codon; D012333:RNA, Messenger