SUMO-activating enzyme subunit 1 (SAE1), human, recombinant

Organism: Homo sapiens (Human). Source: E.coli. Expression Region: 1-346aa. Protein Length: Full Length. Tag Info: N-terminal GST-tagged. Target Protein Sequence: MVEKEEAGGG ISEEEAAQYD RQIRLWGLEA QKRLRASRVL LVGLKGLGAE IAKNLILAGV KGLTMLDHEQ VTPEDPGAQF LIRTGSVGRN RAEASLERAQ NLNPMVDVKV DTEDIEKKPE SFFTQFDAVC LTCCSRDVIV KVDQICHKNS IKFFTGDVFG YHGYTFANLG EHEFVEEKTK VAKVSQGVED GPDTKRAKLD SSETTMVKKK VVFCPVKEAL EVDWSSEKAK AALKRTTSDY FLLQVLLKFR TDKGRDPSSD TYEEDSELLL QIRNDVLDSL GISPDLLPED FVRYCFSEMA PVCAVVGGIL AQEIVKALSQ RDPPHNNFFF FDGMKGNGIV ECLGPK. 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: The heterodimer acts as an E1 ligase for SUMO1, SUMO2, SUMO3, and probably SUMO4. It mediates ATP-dependent activation of SUMO proteins followed by formation of a thioester bond between a SUMO protein and a conserved active site cysteine residue on UBA2/SAE2. Reference: "In vitro SUMO-1 modification requires two enzymatic steps, E1 and E2." Okuma T., Honda R., Ichikawa G., Tsumagari N., Yasuda H. Biochem. Biophys. Res. Commun. 254:693-698(1999). Function: The heterodimer acts as an E1 ligase for SUMO1, SUMO2, SUMO3, and probably SUMO4. It mediates ATP-dependent activation of SUMO proteins followed by formation of a thioester bond between a SUMO protein and a conserved active site cysteine residue on UBA2/SAE2.