26S proteasome non-ATPase regulatory subunit 14 (PSMD14), human, recombinant

Organism: Homo sapiens (Human). Source: Baculovirus. Expression Region: 1-310aa. Protein Length: Full Length. Tag Info: N-terminal MBP-tagged and C-terminal 6xHis-tagged. Target Protein Sequence: MDRLLRLGGG MPGLGQGPPT DAPAVDTAEQ VYISSLALLK MLKHGRAGVP MEVMGLMLGE FVDDYTVRVI DVFAMPQSGT GVSVEAVDPV FQAKMLDMLK QTGRPEMVVG WYHSHPGFGC WLSGVDINTQ QSFEALSERA VAVVVDPIQS VKGKVVIDAF RLINANMMVL GHEPRQTTSN LGHLNKPSIQ ALIHGLNRHY YSITINYRKN ELEQKMLLNL HKKSWMEGLT LQDYSEHCKH NESVVKEMLE LAKNYNKAVE EEDKMTPEQL AIKNVGKQDP KRHLEEHVDV LMTSNIVQCL AAMLDTVVFK. 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: Component of the 26S proteasome, a multiprotein complex involved in the ATP-dependent degradation of ubiquitinated proteins. This complex plays a key role in the maintenance of protein homeostasis by removing misfolded or damaged proteins, which could impair cellular functions, and by removing proteins whose functions are no longer required. Therefore, the proteasome participates in numerous cellular processes, including cell cycle progression, apoptosis, or DNA damage repair. The PSMD14 subunit is a metalloprotease that specifically cleaves 'Lys-63'-linked polyubiquitin chains within the complex. Plays a role in response to double-strand breaks: acts as a regulator of non-homologous end joining by cleaving 'Lys-63'-linked polyubiquitin, thereby promoting retention of JMJD2A/KDM4A on chromatin and restricting TP53BP1 accumulation. Also involved in homologous recombination repair by promoting RAD51 loading. Reference: "K63-specific deubiquitination by two JAMM/MPN+ complexes: BRISC-associated Brcc36 and proteasomal Poh1." Cooper E.M., Cutcliffe C., Kristiansen T.Z., Pandey A., Pickart C.M., Cohen R.E. EMBO J. 28:621-631(2009). Function: nan