In enzymology, a benzophenone synthase () is an

enzyme Enzymes () are proteins that act as biological catalysts by accelerating chemical reactions. The molecules upon which enzymes may act are called substrate (chemistry), substrates, and the enzyme converts the substrates into different molecule ...

that catalyzes the

chemical reaction A chemical reaction is a process that leads to the chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and break ...

:3 malonyl-CoA + 3-hydroxybenzoyl-CoA

\rightleftharpoons

4 CoA + 2,3',4,6-tetrahydroxybenzophenone + 3 CO₂ Thus, the two substrates of this enzyme are

malonyl-CoA Malonyl-CoA is a coenzyme A derivative of malonic acid. Functions It plays a key role in chain elongation in fatty acid biosynthesis and polyketide biosynthesis. Fatty acid biosynthesis Malonyl-CoA provides 2-carbon units to fatty acids and com ...

and

3-hydroxybenzoyl-CoA 3-Hydroxybenzoyl-CoA is a molecule formed by condensing the thiol group of coenzyme A (CoA) with the carboxylic acid group of 3-hydroxybenzoic acid. Stable in acidic conditions, it is a tetraprotic acid due to the pyrophosphate and phosphate gro ...

, whereas its 3 products are

CoA Coa may refer to: Places * Coa, County Fermanagh, a rural community in County Fermanagh, Northern Ireland * Côa River, a tributary of the Douro, Portugal ** Battle of Coa, part of the Peninsular War period of the Napoleonic Wars ** Côa Vall ...

, 2,3',4,6-tetrahydroxybenzophenone, and CO₂. This enzyme belongs to the family of

transferase A transferase is any one of a class of enzymes that catalyse the transfer of specific functional groups (e.g. a methyl or glycosyl group) from one molecule (called the donor) to another (called the acceptor). They are involved in hundreds of ...

s, specifically those

acyltransferase Acyltransferase is a type of transferase enzyme that acts upon acyl groups. Examples include: * Glyceronephosphate O-acyltransferase * Lecithin-cholesterol acyltransferase *Long-chain-alcohol O-fatty-acyltransferase In enzymology, a long-chain ...

s transferring groups other than aminoacyl groups. The

systematic name A systematic name is a name given in a systematic way to one unique group, organism, object or chemical substance, out of a specific population or collection. Systematic names are usually part of a nomenclature. A semisystematic name or semitrivial ...

of this enzyme class is malonyl-CoA:3-hydroxybenzoyl-CoA malonyltransferase.

References

* EC 2.3.1 Enzymes of unknown structure {{2.3-enzyme-stub