ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,931, issued on June 9, was assigned to INSTITUTE OF BIOPHYSICS, CHINESE PIE ACADEMY OF SCIENCES (Beijing).

"SmartBac baculovirus expression system and application thereof" was invented by Yujia Zhai (Beijing) and Fei Sun (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a SmartBac baculovirus expression system and application thereof. The system can comprise a acceptor plasmid (containing fragment A or fragments B and C) and a donor plasmid (containing fragment D); the fragment A contains a promoter, a sequence encoding a protease, a protease cleavage site, an insertion region of a gene encoding a target object t...