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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Structure and activation of the human N-ras gene.

The normal human N-ras gene has been cloned. In structure and sequence it closely resembles the human H-ras and K-ras genes. The three genes share regions of nucleotide homology and nucleotide divergence within coding sequences and have a common intron/exon structure, indicating that they have evolved from a similarly spliced ancestral gene. The N-ras gene of SK-N-SH neuroblastoma cells has transforming activity, while the normal N-ras gene does not, the result of a single nucleotide change substituting lysine for glutamine in position 61 of the N-ras gene product. From previous studies we conclude that amino acid substitutions in two distinct regions can activate the transforming potential of ras gene products.[1]


  1. Structure and activation of the human N-ras gene. Taparowsky, E., Shimizu, K., Goldfarb, M., Wigler, M. Cell (1983) [Pubmed]
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