S-ribosylhomocysteine lyase (luxS), Bacillus subtilis, recombinant

Organism: Bacillus subtilis (strain 168). Source: E.coli. Expression Region: 1-157aa. Protein Length: Full Length. Tag Info: N-terminal 6xHis-tagged. Target Protein Sequence: MPSVESFELD HNAVVAPYVR HCGVHKVGTD GVVNKFDIRF CQPNKQAMKP DTIHTLEHLL AFTIRSHAEK YDHFDIIDIS PMGCQTGYYL VVSGEPTSAE IVDLLEDTMK EAVEITEIPA ANEKQCGQAK LHDLEGAKRL MRFWLSQDKE ELLKVFG. Purity: Greater than 90% as determined by SDS-PAGE. Endotoxin: Not test. Biological Activity: n/a. Form: Liquid or Lyophilized powder. Buffer: If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0. Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20 °C/-80 °C. Our default final concentration of glycerol is 50%. Customers could use it as reference. Storage: The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20 °C/-80 °C. The shelf life of lyophilized form is 12 months at -20 °C/-80 °C. Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4 °C for up to one week. Relevance: Involved in the synthesis of autoinducer 2 (AI-2) which is secreted by bacteria and is used to communicate both the cell density and the metabolic potential of the environment. The regulation of gene expression in response to changes in cell density is called quorum sensing. Catalyzes the transformation of S-ribosylhomocysteine (RHC) to homocysteine (HC) and 4,5-dihydroxy-2,3-pentadione (DPD). Reference: "The 1.2 A structure of a novel quorum-sensing protein, Bacillus subtilis LuxS." Ruzheinikov S.N., Das S.K., Sedelnikova S.E., Hartley A., Foster S.J., Horsburgh M.J., Cox A.G., McCleod C.W., Mekhalfia A., Blackburn G.M., Rice D.W., Baker P.J. J. Mol. Biol. 313:111-122(2001). Function: Involved in the synthesis of autoinducer 2 (AI-2) which is secreted by bacteria and is used to communicate both the cell density and the metabolic potential of the environment. The regulation of gene expression in response to changes in cell density is called quorum sensing. Catalyzes the transformation of S-ribosylhomocysteine (RHC) to homocysteine (HC) and 4,5-dihydroxy-2,3-pentadione (DPD).