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 dolichyl-xylosyl-phosphate-protein xylosyltransferase () 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 ...

:dolichyl D-xylosyl phosphate + protein

\rightleftharpoons

dolichyl phosphate + D-xylosylprotein Thus, the two substrates of this enzyme are

dolichyl D-xylosyl phosphate Dolichyl, related to Dolichol, is used in the names of: *Dolichyl beta-D-glucosyl phosphate, a molecule involved in glycosylation *Dolichyl-diphosphate—polyphosphate phosphotransferase (EC 2.7.4.20) * Dolichyl-diphosphooligosaccharide—protein ...

and

protein Proteins are large biomolecules and macromolecules that comprise one or more long chains of amino acid residues. Proteins perform a vast array of functions within organisms, including catalysing metabolic reactions, DNA replication, respo ...

, whereas its two products are

dolichyl phosphate Dolichol monophosphate is a fatty alcohol Fatty alcohols (or long-chain alcohols) are usually high-molecular-weight, straight-chain primary alcohols, but can also range from as few as 4–6 carbons to as many as 22–26, derived from natural fat ...

and D-xylosylprotein. This enzyme belongs to the family of glycosyltransferases, specifically the pentosyltransferases. The systematic name of this enzyme class is dolichyl-D-xylosyl-phosphate:protein D-xylosyltransferase.

References

* EC 2.4.2 Enzymes of unknown structure {{2.4-enzyme-stub