Current synzymes consist mainly of organic molecules tailored in such a way that they catalyse certain kinds of reactions.
Derivatised proteins: If [Ru(NH3)5]3+ is attached to certain histidine residues in a myoglobin protein, myoglobin is no longer a passive oxygen carrier, but gains enzymatic activity of an oxidase.
Antibodies can act as enzymes, then named abzymes, if they are selected against transition state analogues.
Synzymes from organic molecules: Cyclodextrins are cap structures with a hydrophilic exterior but a hydrophobic interior.
If pyridoxal is anchored in the interior the cyclodextran shows transaminase activity.