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Unformatted text preview: the anaplerotic reactions. To b oxidation through acetyl-CoA. To amino acid degradation through acetyl-CoA and various intermediates of the cycle. Regulation: Supply and demand of TCA cycle. Availability of NAD 1 and FAD as substrates. Inhibition by NADH. High-energy signals turn off . Low-energy signals turn on . ATP yield: Pyruvate 15ATP Acetyl-CoA 12ATP Equations: Pyruvate 1 GDP 1 P i 1 3NAD 1 1 FAD 3CO 2 1 GTP 1 3NADH 1 FADH 2 1 3H 1 Acetyl-CoA 1 GDP 1 P i 1 2NAD 1 1 FAD 2CO 2 1 GTP 1 2NADH 1 FADH 2 1 2H 1 1 The tricarboxylic acid cycle is also known as the Krebs cycle or the citric acid cycle. Why give something so central to life only one name?...
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