gene can be obtained by ordinary genetic engineering techniques. For example, the thioesterase gene of the present invention can be obtained by artificial synthesis based on the amino
acid sequence set forth in SE[) ID NO: 1 or the nucleotide sequence set forth in 5 SEQ ID NO: 2. The artificial synthesis of a gene can be achieved by utilizing the
services such as lnvitrogen, Inc. Furthermore, the gene can also be obtained by
cloning from Nannochloropsis gaditana. The cloning can be carried out by, for
example, the methods described in Molecular Cloning - A LABORATORY
MANUAL THIRD EDITION [Joseph Sambrook, David W. Russell, Cold Spring 10 Harbor Laboratory Press (2001)] and the like.