Preferential DNA Damage and Poor Repair Determine ras Gene Mutational Hotspot in Human Cancer

Abstract excerpt

BACKGROUND: Mutations in ras genes are commonly found in human cancers and in animal models. Although mutations at codons 12, 13, and 61 of H-, N- and K-ras genes can activate their oncogenic function, mutations at codon 12 of K-ras are the most common mutations found among the three ras genes in human cancers. To investigate whether codon 12 of human K-ras is especially susceptible to carcinogens and/or whether...

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