In
enzymology, a 3-carboxy-cis,cis-muconate cycloisomerase () 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
Catalysis () is the process of increasing the rate of a chemical reaction by adding a substance known as a catalyst (). Catalysts are not consumed in the reaction and remain unchanged after it. If the reaction is rapid and the catalyst recycl ...
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 ...
:2-carboxy-2,5-dihydro-5-oxofuran-2-acetate
cis,cis-butadiene-1,2,4-tricarboxylate
Hence, this enzyme has one
substrate
Substrate may refer to:
Physical layers
*Substrate (biology), the natural environment in which an organism lives, or the surface or medium on which an organism grows or is attached
** Substrate (locomotion), the surface over which an organism lo ...
,
2-carboxy-2,5-dihydro-5-oxofuran-2-acetate, and one
product
Product may refer to:
Business
* Product (business), an item that serves as a solution to a specific consumer problem.
* Product (project management), a deliverable or set of deliverables that contribute to a business solution
Mathematics
* Prod ...
,
cis,cis-butadiene-1,2,4-tricarboxylate.
This enzyme belongs to the family of
isomerase
Isomerases are a general class of enzymes that convert a molecule from one isomer to another. Isomerases facilitate intramolecular rearrangements in which bonds are broken and formed. The general form of such a reaction is as follows:
A–B � ...
s, specifically intramolecular
lyase
In biochemistry, a lyase is an enzyme that catalyzes the breaking (an elimination reaction) of various chemical bond
A chemical bond is a lasting attraction between atoms or ions that enables the formation of molecules and crystals. The bon ...
s. 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 2-carboxy-2,5-dihydro-5-oxofuran-2-acetate lyase (decyclizing). Other names in common use include beta-carboxymuconate lactonizing enzyme, and 3-carboxymuconolactone hydrolase. This enzyme participates in
benzoate degradation via hydroxylation.
Structural studies
As of late 2007, only one
structure has been solved for this class of enzymes, with the
PDB accession code .
References
*
*
EC 5.5.1
Enzymes of known structure
{{isomerase-stub