reactions are said to be coupled reactions.

No experimental structure is known for GGCX, limiting understanding of its reaction mechanism. Based on the fact that the two reactions are coupled, a computational study is able to propose how the reactants interact with each other to form the products. Lys228 has been shown to be the residue responsible for starting the reaction. How the enzyme holds the reactants in place to have them interact with each other remains poorly shown. 491-507 and 395-401 are probably responsible for propeptide