The two components which are often found as part of an enzyme are Active site and protein. Proteins are referred to as macromolecules or macromolecules which consists of more or one of a chain of amino acid residue. They do perform an array of functions which are within organisms. For example, DNA replication, responding to stimuli, catalyzing the metabolic reaction. An active site is referred to as the region of an enzyme where substrate molecules bind and also they undergo a chemical reaction. They contain of residues which form temporary with the substrate and also catalytic site which catalyzes a reaction.