Post abs processing of proteins

Question 1

Ammonia disposal

Answer 1

1) Transamination - transfer of amino group from amino acid to alpha-ketoglutarate forming glutamate.
(Pyridoxal phosphate needed)

2) Deamination - release of amminia from glutamate
3) Urea synthesis - urea cycle (in the liver)

Question 2

Transportation of ammonia

Answer 2

Ammonia must be transported to the liver as glutamate or glutamine

Question 3

Pyridoxal phosphate

Answer 3

Active form of vitamin B6

Question 4

Control steps in urea cycle

Answer 4

• Ammonia + bicarbonate forms carbamoyl phosphate
  -Carbamoyl phosphate synthesis (CPS)
  -