The ?-carbon and amino nitrogen of muscle alanine are radiolabeled with 14C and 15N respectively. Outline the metabolic journey that could result in the presence of
?(a) 14C in fatty acid in the adipocyte store of triglycerides
?(b) 14C in muscle ribose;
?(c) 15N in liver glutamate
?(d) 15N in urea.
No need to write out all the metabolic steps, just name the pathways and identify the keyintermediates.