DNA repair protein RAD50 (RAD50), partial, human, recombinant

Organism: Homo sapiens (Human). Source: E.coli. Expression Region: 1-235aa. Protein Length: Partial. Tag Info: N-terminal 10xHis-tagged and C-terminal Myc-tagged. Target Protein Sequence: MSRIEKMSIL GVRSFGIEDK DKQIITFFSP LTILVGPNGA GKTTIIECLK YICTGDFPPG TKGNTFVHDP KVAQETDVRA QIRLQFRDVN GELIAVQRSM VCTQKSKKTE FKTLEGVITR TKHGEKVSLS SKCAEIDREM ISSLGVSKAV LNNVIFCHQE DSNWPLSEGK ALKQKFDEIF SATRYIKALE TLRQVRQTQG QKVKEYQMEL KYLKQYKEKA CEIRDQITSK EAQLT. 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: Component of the MRN complex, which plays a central role in double-strand break (DSB) repair, DNA recombination, maintenance of telomere integrity and meiosis. The complex possesses single-strand endonuclease activity and double-strand-specific 3'-5' exonuclease activity, which are provided by MRE11. RAD50 may be required to bind DNA ends and hold them in close proximity. This could facilitate searches for short or long regions of sequence homology in the recombining DNA templates, and may also stimulate the activity of DNA ligases and/or restrict the nuclease activity of MRE11 to prevent nucleolytic degradation past a given point. The complex may also be required for DNA damage signaling via activation of the ATM kinase. In telomeres the MRN complex may modulate t-loop formation. Reference: "Cell-cycle-regulated association of RAD50/MRE11/NBS1 with TRF2 and human telomeres." Zhu X.-D., Kuester B., Mann M., Petrini J.H.J., de Lange T. Nat. Genet. 25:347-352(2000). Function: nan