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

, a succinyldiaminopimelate transaminase () is an

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

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 recyc ...

the

chemical reaction A chemical reaction is a process that leads to the IUPAC nomenclature for organic transformations, chemical transformation of one set of chemical substances to another. Classically, chemical reactions encompass changes that only involve the pos ...

:N-succinyl-L-2,6-diaminoheptanedioate + 2-oxoglutarate

\rightleftharpoons

N-succinyl-L-2-amino-6-oxoheptanedioate + L-glutamate Thus, the two substrates of this enzyme are N-succinyl-L-2,6-diaminoheptanedioate and 2-oxoglutarate, whereas its two products are N-succinyl-L-2-amino-6-oxoheptanedioate and

L-glutamate Glutamic acid (symbol Glu or E; the ionic form is known as glutamate) is an α-amino acid that is used by almost all living beings in the biosynthesis of proteins. It is a non-essential nutrient for humans, meaning that the human body can synt ...

. 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 di ...

s, specifically the

transaminases Transaminases or aminotransferases are enzymes that catalyze a transamination reaction between an amino acid and an α-keto acid. They are important in the synthesis of amino acids, which form proteins. Function and mechanism An amino acid co ...

, which transfer nitrogenous groups. The systematic name of this enzyme class is N-succinyl-L-2,6-diaminoheptanedioate:2-oxoglutarate aminotransferase. Other names in common use include succinyldiaminopimelate aminotransferase, and N-succinyl-L-diaminopimelic glutamic transaminase. This enzyme participates in

lysine biosynthesis Lysine (symbol Lys or K) is an α-amino acid that is a precursor to many proteins. It contains an α-amino group (which is in the protonated form under biological conditions), an α-carboxylic acid group (which is in the deprotonated −CO ...

. It employs one cofactor,

pyridoxal phosphate Pyridoxal phosphate (PLP, pyridoxal 5'-phosphate, P5P), the active form of vitamin B6, is a coenzyme in a variety of enzymatic reactions. The International Union of Biochemistry and Molecular Biology has catalogued more than 140 PLP-dependent ac ...

References

* EC 2.6.1 Pyridoxal phosphate enzymes Enzymes of unknown structure {{2.6-enzyme-stub