the protein-coding region of the essential saccharomyces cerevisiae ypt1 gene coding for a ras-related , guanine-nucleotide-binding protein was exchanged in chromosome vi by the protein-coding segment of either the mouse ypt1 gene or the v-ki-ras gene , and different chimeric ypt1-v-ki-ras genes .
C0079941
protein-coding region
C0008633
chromosome