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 glutamine N-phenylacetyltransferase () 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 ...

:phenylacetyl-CoA + L-glutamine

\rightleftharpoons

CoA + alpha-N-phenylacetyl-L-glutamine Thus, the two substrates of this enzyme are

phenylacetyl-CoA Phenylacetyl-CoA (C29H42N7O17P3S) is a form of acetyl-CoA formed from the condensation of the thiol group from coenzyme A with the carboxyl group of phenylacetic acid. Its molecular-weight is 885.7 g/mol. and IUPAC name is ''S''- - -(2''R'')-4- ...

and L-glutamine, whereas its two products are coenzyme A">CoA and alpha-N-phenylacetyl-L-glutamine">coenzyme_A.html" ;"title="product (chemistry)">products are coenzyme A">CoA and alpha-N-phenylacetyl-L-glutamine. This enzyme belongs to the family of transferases, specifically those acyltransferases transferring groups other than aminoacyl groups. The List of enzymes, systematic name of this enzyme class is phenylacetyl-CoA:L-glutamine alpha-N-phenylacetyltransferase. Other names in common use include glutamine phenylacetyltransferase, and phenylacetyl-CoA:L-glutamine N-acetyltransferase. This enzyme participates in

tyrosine metabolism -Tyrosine or tyrosine (symbol Tyr or Y) or 4-hydroxyphenylalanine is one of the 20 standard amino acids that are used by cells to synthesize proteins. It is a non-essential amino acid with a polar side group. The word "tyrosine" is from the Gr ...

and

phenylalanine metabolism Phenylalanine (symbol Phe or F) is an essential α-amino acid with the formula . It can be viewed as a benzyl group substituted for the methyl group of alanine, or a phenyl group in place of a terminal hydrogen of alanine. This essential amino ac ...

References

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