In enzymology, a glucosylceramidase is an enzyme that catalyzes the chemical reaction D-glucosyl-N-acylsphingosine + H2O ⇌ {\displaystyle \rightleftharpoons } D-glucose + N-acylsphingosineThus, the two substrates of this enzyme are D-glucosyl-N-acylsphingosine and H2O, whereas its two products are D-glucose and N-acylsphingosine. Wikipedia