This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cholesterol synthesis and bile acids, Subject name: Biochemistry
[{'content': 'Which of the following is not synthesised from mevalonate? \nSelect and explain. \nA. Farnesyl pyrophosphate, B. Geranyl pyrophosphate, C. Dolichol, D. Ubiquitin', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Cholesterol synthetic pathway is also involved in the synthesis of many other impoant compounds such as: Farnesyl pyrophosphate and geranyl pyrophosphate - involved in prenylation of proteins. Dolichol - involved in N-glycosylation of proteins in endoplasmic reticulum. Ubiquinone (Q10) - is the electron carrier in the mitochondrial respiratory chain. Inhibition of ubiquinone synthesis is one of the reasons for statin-induced myopathy. Ubiquitin protein is not synthesized by any of the cholesterol synthesis pathway intermediate.', 'role': 'assistant'}]