In enzymology, a pantetheine hydrolase () is an enzyme that catalyzes the chemical reaction (R)-pantetheine + H2O (R)-pantothenate + 2-aminoethanethiol Thus, the two substrates of this enzyme are (R)-pantetheine and H2O, whereas its two products are (R)-pantothenate and 2-aminoethanethiol. This enzyme belongs to the family of hydrolases, those acting on carbon-nitrogen bonds other than peptide bonds, specifically in linear amides. The systematic name of this enzyme class is (R)-pantetheine amidohydrolase. Other names in common use include pantetheinase, vanin, and vanin-1. This enzyme participates in pantothenate and coa biosynthesis. References EC 3.5.1 Enzymes of unknown structure