Skip to content

#protein classification

3 public questions tagged with this topic.

Which of the following proteins is typically not lipid-anchored?

Membrane protein classification by lipid modification clarifies attachment without transmembrane span. Ras GTPases undergo prenylation by farnesyltransferase recognizing C-terminal CAAX motif, subsequent RCE1 proteolysis, ICMT methylation, and for N-Ras and H-Ras additional Golgi palmitoylation by DHHC enzymes driving plasma membrane targeting and partitioning into ordered domains for MAPK signaling and transformation. Src family kinases c-Src, Fyn, Lck, Yes undergo cotranslational N-myristoylation at glycine two plus reversible S-palmitoylation for stable inner leaflet association recruiting

Ref: Pollard and Earnshaw, Cell Biology, 3rd ed., Chapter 17, Actin Filaments and Lipid-Anchored Proteins.