US Patent Issued to IDEMITSU KOSAN on July 29 for "Peptide tag and tagged protein including same" (Japanese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,371,697, issued on July 29, was assigned to IDEMITSU KOSAN Co. LTD (Chiyoda-ku, Japan).

"Peptide tag and tagged protein including same" was invented by Kazuyoshi Koike (Sodegaura, Japan), Eiji Takita (Sodegaura, Japan) and Koichi Kaneda (Sodegaura, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A peptide comprising the sequence shown below is added as a peptide tag to a useful protein, followed by allowing its expression.Xm(PYn)qPZr In this formula, X, Y, and Z each represent an amino acid residue independently selected from the group consisting of R, G, S, K, T, L, N, Q, and H, with the proviso that at least one Y represents K, L, N, Q, H, or R. ...