Which one of the following TCA cycle intermediate may not be added or removed by other metabolic pathways?
Correct Answer: Isocitrate
Description: Oxaloacetate may be formed from pyruvate during gluconeogenesis. Degradation of tyrosine and phenylalanine may produce fumarate. Citrate is transpoed out of mitochondria to be used as a source of cytoplasmic acetyl CoA. Isocitrate is formed and removed in TCA cycle. Ref: Textbook of Biochemistry for Medical Students by D.M. Vasudevan, 6th Edition, Page: 218
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Biochemistry
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