The enzyme responsible for the interconversion of dihydroxyacetone-3-phosphate and glyceraldehyde-3-phosphate is an isomerase. Isomerases are a category of enzymes that catalyze the interconversion of isomers, which are molecules with the same chemical formula but different structural arrangements.

Dihydroxyacetone-3-phosphate (DHAP) and glyceraldehyde-3-phosphate (G3P) are both important molecules in the glycolysis pathway, which is responsible for the breakdown of glucose to produce energy. DHAP and G3P are interconverted during the process of glycolysis.

The enzyme responsible for this interconversion is called triosephosphate isomerase. It catalyzes the reversible conversion of DHAP to G3P. This is an essential step in glycolysis as it allows for the production of two molecules of G3P, which can then continue through the pathway to produce energy.

The interconversion of DHAP and G3P occurs through a series of chemical reactions catalyzed by triosephosphate isomerase. This enzyme facilitates the rearrangement of the carbon atoms in the molecules, resulting in the formation of the isomeric product.

In the reaction, the enzyme binds to either DHAP or G3P and facilitates the movement of specific atoms to form the alternative isomer. This process involves the breaking and formation of chemical bonds within the molecule.

Overall, the interconversion of DHAP and G3P is a crucial step in the glycolysis pathway, and the enzyme responsible for this process belongs to the category of isomerases. Isomerases play a vital role in various metabolic pathways by enabling the conversion of molecules with different structural arrangements, allowing for the efficient utilization of energy and synthesis of important cellular components.