Proteasome activator complex subunit 3 (PSME3), partial, human, recombinant

Organism: Homo sapiens (Human). Source: E.coli. Expression Region: 2-252aa. Protein Length: Partial. Tag Info: N-terminal 6xHis-GST-tagged. Target Protein Sequence: ASLLKVDQEV KLKVDSFRER ITSEAEDLVA NFFPKKLLEL DSFLKEPILN IHDLTQIHSD MNLPVPDPIL LTNSHDGLDG PTYKKRRLDE CEEAFQGTKV FVMPNGMLKS NQQLVDIIEK VKPEIRLLIE KCNTVKMWVQ LLIPRIEDGN NFGVSIQEET VAELRTVESE AASYLDQISR YYITRAKLVS KIAKYPHVED YRRTVTEIDE KEYISLRLII SELRNQYVTL HDMILKNIEK IKRPRSSNAE T. 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: Subunit of the 11S REG-gamma (also called PA28-gamma) proteasome regulator, a doughnut-shaped homoheptamer which associates with the proteasome. 11S REG-gamma activates the trypsin-like catalytic subunit of the proteasome but inhibits the chymotrypsin-like and postglutamyl-preferring (PGPH) subunits. Facilitates the MDM2-p53/TP53 interaction which promotes ubiquitination- and MDM2-dependent proteasomal degradation of p53/TP53, limiting its accumulation and resulting in inhibited apoptosis after DNA damage. May also be involved in cell cycle regulation. Mediates CCAR2 and CHEK2-dependent SIRT1 inhibition. Reference: Cloning and nucleotide sequence of cDNA for Ki antigen, a highly conserved nuclear protein detected with sera from patients with systemic lupus erythematosus.Nikaido T., Shimada K., Shibata M., Hata M., Sakamoto M., Takasaki Y., Sato C., Takahashi T., Nishida Y.Clin. Exp. Immunol. 79:209-214(1990). Function: nan