Multiple Choice
A group of membrane proteins can be extracted from membranes only by using detergents.All the proteins in this group have a similar amino acid sequence at their C-terminus: -KKKKKXXC (where K stands for lysine, X stands for any amino acid, and C stands for cysteine) .This sequence is essential for their attachment to the membrane.What is the most likely way in which the C-terminal sequence attaches these proteins to the membrane?
A) The cysteine residue is covalently attached to a membrane lipid.
B) The peptide spans the membrane as an α helix.
C) The peptide spans the membrane as part of a β sheet.
D) The positively charged lysine residues interact with an acidic integral membrane protein.
Correct Answer:
Verified
Correct Answer:
Verified
Q47: Water molecules readily form hydrogen bonds with
Q48: For each of the following sentences,
Q49: Where does most new membrane synthesis take
Q50: Both glycoproteins and proteoglycans contribute to the
Q51: Plasma membranes are extremely thin and fragile,
Q52: Which of the following membrane lipids does
Q53: Indicate whether the following statements are TRUE
Q54: Explain the reasons why membrane proteins are
Q55: Which of the following phospholipid precursors is
Q57: Sodium dodecyl sulfate (SDS) and Triton X-100