Lactose Operon Repressor/LacI Protein (His Tag), recombinant E.coli

Activity: Testing in progress Protein Construction: Recombinant E.coli Lactose operon repressor is produced by our E.coli expression system and the target gene encoding Met1-Gln360 is expressed with a 6His tag at the C-terminus. Sequence: Met1-Gln360. Fusion tag: C-His Endotoxin: <1.0 EU per µg of the protein as determined by the LAL method. Apparent Molecular Mass: 40 kDa. Protein function: Lactose operon repressor (LacI) contains one HTH lacI-type DNA-binding domain, functions as a homotetramer. Lactose operon repressor as a repressor of the lactose operon, which also as an inducer, binds allolactose. If remove residues 1-59, resulting the loss of DNA-binding activity but retains tetrameric structure and inducer-binding activity. If delete residues 340-360, resulting the loss of tetramer formation, but retains dimer formation, inducer-binding activity, and DNA-binding activity. Protein function: Repressor of the lactose operon. Binds allolactose as an inducer. [The UniProt Consortium]