Residues: Glu1314-Asn1663 (Accession # P01027), with a N-terminal His-tag. Grade & Purity: >97%, 41.6 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-ENGNLLR SEETKQNEAF SLTAKGKGRG TLSVVAVYHA KLKSKVTCKK FDLRVSIRPA PETAKKPEEA KNTMFLEICT KYLGDVDATM SILDISMMTG FAPDTKDLEL LASGVDRYIS KYEMNKAFSN KNTLIIYLEK ISHTEEDCLT FKVHQYFNVG LIQPGSVKVY SYYNLEESCT RFYHPEKDDG MLSKLCHSEM CRCAEENCFM QQSQEKINLN VRLDKACEPG VDYVYKTELT NIELLDDFDE YTMTIQQVIK SGSDEVQAGQ QRKFISHIKC RNALKLQKGK KYLMWGLSSD LWGEKPNTSY IIGKDTWVEH WPEAEECQDQ KYQKQCEELG AFTESMVVYG CPN