Calreticulin (CALR), human, recombinant

Organism: Homo sapiens (Human). Source: Mammalian cell. Expression Region: 18-417aa. Protein Length: Full Length. Tag Info: N-terminal 10xHis-tagged and C-terminal Flag-tagged. Target Protein Sequence: EPAVYFKEQF LDGDGWTSRW IESKHKSDFG KFVLSSGKFY GDEEKDKGLQ TSQDARFYAL SASFEPFSNK GQTLVVQFTV KHEQNIDCGG GYVKLFPNSL DQTDMHGDSE YNIMFGPDIC GPGTKKVHVI FNYKGKNVLI NKDIRCKDDE FTHLYTLIVR PDNTYEVKID NSQVESGSLE DDWDFLPPKK IKDPDASKPE DWDERAKIDD PTDSKPEDWD KPEHIPDPDA KKPEDWDEEM DGEWEPPVIQ NPEYKGEWKP RQIDNPDYKG TWIHPEIDNP EYSPDPSIYA YDNFGVLGLD LWQVKSGTIF DNFLITNDEA YAEEFGNETW GVTKAAEKQM KDKQDEEQRL KEEEEDKKRK EEEEAEDKED DEDKDEDEED EEDKEEDEEE DVPGQAKDEL. 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: Calcium-binding chaperone that promotes folding, oligomeric assembly and quality control in the endoplasmic reticulum (ER) via the calreticulin/calnexin cycle. This lectin interacts transiently with almost all of the monoglucosylated glycoproteins that are synthesized in the ER. Interacts with the DNA-binding domain of NR3C1 and mediates its nuclear export. Involved in maternal gene expression regulation. May participate in oocyte maturation via the regulation of calcium homeostasis. Present in the cortical granules of non-activated oocytes, is exocytosed during the cortical reaction in response to oocyte activation and might participate in the block to polyspermy. Reference: "HLA-F is a predominantly empty, intracellular, TAP-associated MHC class Ib protein with a restricted expression pattern." Wainwright S.D., Biro P.A., Holmes C.H. J. Immunol. 164:319-328(2000). Function: nan