Naturally occurring aminoacid A enzymatically decomposes to biologically active compound B. During the reaction side chain of the aminoacid doesn't change. When 31.0 mg (0.2 mmol) of the aminoacid was burnt, products contained 52.8 mg of CO2 and 16.2 mg H2O and no traces of sulfur were detected. During analysis the substance B 1 mmol (111 mg) sample produced 33.6 mL of dry nitrogen, 220 mg of CO2 and 81 mg of H2O. Identify A and B and explain what is the enzymatic reaction.