So it hydrolyzes. An ATP molecule takes that energy and uses that energy to basically help attach that carbon dioxide onto the ProPanel coenzyme A. And this entire process requires a vitamin B twelve molecule, vitamin B seven, known as biotin. So this carboxylase is known as ProPanel, COA carboxylase because this is a substrate of this reaction. So we have ProPanel coenzyme A. Carboxylase uses the biotin, it hydrolyzes an ATP, and that helps attach the carbon dioxide onto the ProPanel coenzyme at form the deisomer of methyl malno coenzyme A. So the most important takeaway lesson from this particular step is to remember that the ProPanel coenzyme A carboxylase needs three things.