Patent ID: 8354248

Claim:
An isolated DNA fragment, capable of promoting the expression of a gene downstream thereof, comprising a base sequence selected from the group consisting of base sequence SEQ ID NO: 1, base sequence SEQ ID NO: 1 wherein 1 to 9 bases are deleted, substituted, inverted, or added, a base sequence capable of hybridizing to the complement of SEQ ID NO: 1, wherein the hybridizing is conducted (i) at 65° C. in 0.7-1.0 M NaCl and then (ii) at 65° C. in a 0.1-2×SSC solution, with a 1×SSC solution being 150 mM sodium chloride and 15 mM sodium citrate, and a base sequence sharing at least 95% homology with SEQ ID NO: 1.