This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Physiology
Which of the following is not a sarcolemal protein 
Select and explain. 
A. Sarcoglycan, B. Dystrophin, C. Dystroglycan, D. Perlecan
D: Perlecan
Answer: D: Perlecan 
Explanation: Caplin, dystrophin, dysfelin, dystroglycan, sacroglycan, caveoli & integrins are sacrolemmal proteins. Where as perlecan is a large multidomain proteoglycan, which is synthesised by both vascular endothelium and smooth muscle cells and deposited in extra cellular matrix.