The Ras Proteins are Associated to the Membrane Via What

Question

The Ras proteins are associated to the membrane via what mechanism?
A) thioester-linked fatty acyl anchor
B) thioether-linked prenyl anchor
C) carboxy terminal ester-linked prenyl anchor
D) insertion of a portion of an amphipathic helix into the membrane
E) both b and c

Accepted Answer

Ras proteins are associated with the membrane through a thioether-linked prenyl anchor, which involves the attachment of a prenyl group to a cysteine residue near the C-terminus of the protein.