NCIt definition : GTPase KRas (189 aa, 21 kDa) is encoded by the human KRAS gene. This protein is involved
in the regulation of GTP metabolism and in signaling.;
NCIt note : There are at least 2 isoforms of GTPase KRas called K-Ras4A and K-Ras4B. These osoforms
differ in the C-terminal region which is encoded by two alternative exons (IVA and
IVB). UniProt considers K-Ras4A the canonical isoform.;