Patent ID: 6214578
Filing Date: 2001-04-10
Classification: C07K,C12N

Abstract:
A method for expressing a foreign gene comprising:inserting said foreign gene into a site downstream of a promoter; andexpressing said foreign gene in a cell, wherein a plurality of intron-originated DNA fragments selected from the group consisting of SEQ ID NO:1, SEQ ID NO:2, SEQ ID NO:3, a variant having not less than 90% homology to SEQ ID NO:1, a variant having not less than 90% homology to SEQ ID NO:2, and a variant having not less than 90% homology to SEQ ID NO:3, which are the same or different and promote expression of foreign genes, are inserted into one or more sites upstream of said foreign gene; and wherein the level of expression of said foreign gene is higher than when only one of said intron-originated DNA fragments is inserted into a site upstream of said foreign gene.