Bacterial non-heme ferritin (ftnA), Helicobacter pylori, recombinant

Organism: Helicobacter pylori (strain ATCC 700392 / 26695) (Campylobacter pylori). Source: Yeast. Expression Region: 1-167aa. Protein Length: Full length. Tag Info: N-terminal 10xHis-tagged. Target Protein Sequence: MLSKDIIKLL NEQVNKEMNS SNLYMSMSSW CYTHSLDGAG LFLFDHAAEE YEHAKKLIVF LNENNVPVQL TSISAPEHKF EGLTQIFQKA YEHEQHISES INNIVDHAIK GKDHATFNFL QWYVSEQHEE EVLFKDILDK IELIGNENHG LYLADQYVKG IAKSRKS. Purity: Greater than 85% 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: Iron-storage protein. Reference: "Paracrystalline inclusions of a novel ferritin containing nonheme iron, produced by the human gastric pathogen Helicobacter pylori: evidence for a third class of ferritins." Frazier B.A., Pfeifer J.D., Russell D.G., Falk P., Olsen A.N., Hammar M., Westblom T.U., Normark S.J. J. Bacteriol. 175:966-972(1993). Function: Iron-storage protein.