The following points highlight the four main processes of Decarboxylation. The processes are: 1. Tyramine 2. Tryptamine 3. Histamine 4. GABA (γ-aminobutyric acid). Decarboxylation Process # 1. Tyramine: i. Tyramine is formed from tyrosine by tyrosine decarboxylation causing elevation of blood pressure. ii. This occurs in the gut by bacterial action. iii. The reaction takes place also in the kidney [...]
The below mentioned article provides a short note on the Reactions of Urea Cycle. Carbamoyl phosphate is formed by the condensation of one mol of phosphate (derived from ATP) being catalyzed by the enzyme carbamoyl phosphate synthetase which is present in liver mitochondria of all ureotelic organisms including humans. In addition to magnesium ion (Mg++), N-acetyl-glutamate (a dicarboxylic acid) is [...]
The following points highlight the three main processes for biosynthesis of urea. The processes are: 1. Transamination 2. Oxidative Deamination 3. Ammonia Formation and Transport. Process # 1. Transamination: a. Transamination involves inter-conversion of a pair of α-amino acids and a pair of α- keto acids and is catalysed by transaminases or aminotransferases. b. Pyridoxal phosphate (B6 PO4) is the [...]