RAF- kinaser er serin/ threonin- kinaser, hvorimod c- KIT, FLT- 3, VEGFR- 2, VEGFR- 3 og PDGFR- β er receptor- tyrosinkinaser.
RAF kinases are serine/ threonine kinases, whereas c-KIT, FLT-3, VEGFR-2, VEGFR-3, and PDGFR-ß are receptor tyrosine kinases.