Question

What kind of membrane protein is found entirely outside the bilayer on either the extracellular or cytoplasmic surface and covalently linked to a membrane lipid situated within the bilayer?

1) integral protein
2) lipid-anchored protein
3) peripheral proteins

Answer 1

The membrane protein described is a lipid-anchored protein, which is attached to the membrane lipid within the bilayer and located entirely outside the bilayer. so, option 2 is the correct answer.

Step-by-step explanation:

The type of membrane protein that is situated entirely outside the bilateral on either the extracellular or cytoplasmic surface and is covalently linked to a membrane lipid within the bilayer is referred to as a lipid-anchored protein. These proteins are neither integral proteins, which are embedded within the membrane, nor peripheral proteins, which are loosely associated with the surface of the lipid bilayer and often connected to integral proteins or to the phospholipid molecules. Instead, lipid-anchored proteins have a lipid molecule that is embedded in the bilayer, anchoring the protein to the membrane.

Lipid-anchored proteins are found entirely outside the bilayer and are covalently linked to a membrane lipid within the bilayer.

Lipid-anchored proteins are the kind of membrane proteins that are found entirely outside the bilayer on either the extracellular or cytoplasmic surface and covalently linked to a membrane lipid situated within the bilayer.