MHHHHHHNKVRTCWNEGRPALAGWLQLPGTLHAEALARLDYDAVVIDMQHSPIDFGQVAPMLIAIELGGAEP FVRTQVNDPSDIMKLLDAGAYGIIAPMVNTRAEAQTLASALHYSPRGLRCFGPRRPSLRYGSGYLAQASETVV GLAMIETREALANIDEILSVDGIDGVFIGPTDLALDLGHAPLVDTEEAEVVSAIAHVRERAHAAGKRVGIFCGSG GFARVKLAEGFDFVTAAPDLAMLSAAARQVIADARAL
S116C mutant construct contains a N-terminal polyhistidine tag (MHHHHHH).