Residues: Asp32~Gln118 (Accession # Q05928), with a N-terminal His-tag. Grade & Purity: >97%, 11.4 kDa as determined by SDS-PAGE reducing conditions. The target protein is fused with a His-tag and its sequence is listed below. The first Met is an initiator amino acid. Moreover, Gly and Ser are added to improve the flexibility of N-terminus at both ends of the His-tag, which will increase the chelating ability of the tag to Ni-Sepharose during purification. MGHHHHHHSGSEF-DGNTTRTPE TNGSLCGAPG ENCTGTTPRQ KVKTHFSRCP KQYKHYCIHG RCRFVVDEQT PSCICEKGYF GARCERVDLF YLQQDRGQ