KROK 1 2011 – Question 114 · KROK (Medicine) · Biological Chemistry
During hypersensitivity test a patient got subcutaneous injection of an antigen which caused reddening of skin, edema, pain as a result of histamine action. This biogenic amine is generated as a result of transformation of the following histidine amino acid:
- A. Deaminization
- B. Phosphorylation
- C. Isomerization
- D. Decarboxylation
- E. Methylation
Hint
Compare the chemical structures of histidine and histamine and ask which group of the amino acid is missing in the amine.
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