Residues: Pro39~ Ser144 (Accession # Q9QZS7), with a N-terminal His-tag. Grade & Purity: >97%, 12.8 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-PV PTSAPRGFWA LSENLTVVEG STVKLWCGVR APGSVVQWAK DGLLLGPNPK IPGFPRYSLE GDSAKGEFHL LIEACDLSDD AEYECQVGRS ELGPELVSPS VILS