2-methylisoborneol synthase (EC 4.2.3.118, sco7700, 2-MIB cyclase, MIB synthase, MIBS) is an enzyme with systematic name (E)-2-methylgeranyl-diphosphate diphosphate-lyase (cyclizing, 2-methylisoborneol-forming).
[1][2][3] This enzyme catalyses the following chemical reaction The product, 2-methylisoborneol, is a characteristic odiferous compound with a musty smell produced by soil microorganisms.