Aminocyclopropanecarboxylic acids structure

But chrysanthemic acid derivatives are by far not the only examples of cyclopropane-containing structures in nature. In fact, the highly strained three-membered carbocycle is virtually ubiquitous. It occurs, for example, in every green plant in the form of 1-aminocyclopropanecarboxylic acid (ACC) 2, a direct precursor to the plant hormone ethylene [3]. In addition, the cyclopropane unit is found in a variety of other natural products, inter alia in terpenes and in various cyclopropanated fatty acids [4]. The biochemical precursors of the latter are unsaturated fatty acids, and in view of the existence of polyunsaturated fatty... 

Jimenez Al, Vaquero V, Cabezas C, Lopez JC, Cativiela C, Alonso JL (2011) The singular gas-phase structure of 1-aminocyclopropanecarboxylic acid (Ac(3)c). J Am Chem Soc... 

Draw the structure of 1-aminocyclopropanecarboxylic acid. This compound undergoes an enzymatic decarboxylation to produce the plant hormone ethene, which is responsible for the initiation of fruit ripening. 

---