In enzymology, a trehalose 6-phosphate phosphorylase is an enzyme that catalyzes the chemical reaction alpha,alpha-trehalose 6-phosphate + phosphate ⇌ {\displaystyle \rightleftharpoons } glucose 6-phosphate + beta-D-glucose 1-phosphateThe two substrates of this enzyme are alpha,alpha'-trehalose 6-phosphate and phosphate. Wikipedia