Patent ID: 7589253

Claim:
A process for producing a transgenic plant comprising a) transforming a cell or tissue of a plant with a nucleic acid encoding a polypeptide having the following three histidine-rich regions (i), (ii) and (iii): (i) His-(Xaa) 3 -His (SEQ ID NO: 21) or His-(Xaa) 4 -His (SEQ ID NO: 22); (ii) His-(Xaa) 2 -His-His (SEQ ID NO; 23) or His-(Xaa) 3 -His-His (SEQ ID NO: 24); and (iii) His-(Xaa) 2 -His-His (SEQ ID NO: 23) or His-(Xaa) 3 -His-His (SEQ ID NO: 24), wherein His designates histidine, Xaa designates any naturally-occurring amino acid, (Xaa) 3 refers to a sequence of three amino acids, (xaa) 4 refers to a sequence of four amino acids, and (Xaa) 2 refers to a sequence of two amino acids, wherein the polypeptide comprises a sequence of amino acids at least 65% identical to the sequence of amino acids set forth in SEQ ID NO: 2, wherein the nucleic acid encodes an expoxygenase, and wherein the nucleic acid is under the control of a promoter conferring transcription of the nucleic acid in the plant; b) regenerating the transformed cell or tissue to produce the transgenic plant; and c) examining the transgenic plant or part thereof for the presence of epoxy fatty acids to determine whether the transgenic plant has epoxy fatty acids.