respiration of other substances (proteins)
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What must happen to an Amino Acid before it can be used for respiration?
Deamination in the liver (removal of amino group) this leaves behind keto acid
What happens to the toxic amino group after it is removed?
It is converted into ammonia, then into urea (which is less toxic) and excreted by the kidneys.
Where does the remaining “organic acid” (carbon skeleton) enter the pathway?
depend on number of carbons in aminio acid 3c amino acid - pyruvate 2c amino acids - acetyl coa 4/5c - krebs cycle
Why is protein respiration less efficient than lipid respiration?
protein respiration have to use energy for demaination and converting amonia to urea proteins have lower proportion of C-H bonds so produce fewer coenzymes for ETC
equation for amino acid respiration
amino acid + oxgen –> keto acid + ammonia ammonia + CO2 –> urea + water