Discloses a protein of any one selected from the group consisting of (a) to (c) shown below: (a) a protein which consists of the amino acid sequence shown in SEQ ID NO: 2, 4 or 6； (b) a protein which consists of an amino acid sequence with deletion, substitution, insertion and/or addition of 1 to 95 amino acids in the amino acid sequence shown in SEQ ID NO: 2, 4 or 6 and which has glycosylation activity on a monoterpene compound； and (c) a protein which has an amino acid sequence sharing a sequence identity of 80% or more with the amino acid sequence shown in SEQ ID NO: 2, 4 or 6 and which has glycosylation activity on a monoterpene compound； and related polyneucleotides, wherein the sequences are as defined in the complete specification. Also discloses related nucleic acids, transformants, extracts, and methods of producing monoterpene glycoside.
