Recombinant E.coli LacI, His-tagged lacI-89E

Recombinant E.coli LacI, His-tagged


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Recombinant E.coli LacI, His-tagged

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Cat.No. : lacI-89E
Product Overview : Recombinant E.coli Lactose operon repressor/LacI is produced with our E. coli expression system. The target protein is expressed with sequence (Met1-Gln360) of E.coli LacI fused with a 6His tag at the C-terminus.
Description : 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.
Source : E. coli
Species : E. coli
Tag : His
Form : Supplied as a 0.2 μM filtered solution of 20mM Tris, 300mM NaCl, 5mM DTT pH 8.0
Endotoxin : Less than 0.1 ng/μg (1 IEU/μg).
Purity : Greater than 95% as determined by SEC-HPLC and reducing SDS-PAGE.
Storage : Store at < -20°C, stable for 6 months after receipt.Please minimize freeze-thaw cycles.

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