Cyclin-dependent kinase 5 activator 1 (CDK5R1), partial, human, recombinant

Organism: Homo sapiens (Human). Source: E.coli. Expression Region: 99-307aa. Protein Length: Partial. Tag Info: N-terminal 6xHis-tagged. Target Protein Sequence: AQPPPAQPPA PPASQLSGSQ TGGSSSVKKA PHPAVTSAGT PKRVIVQAST SELLRCLGEF LCRRCYRLKH LSPTDPVLWL RSVDRSLLLQ GWQDQGFITP ANVVFLYMLC RDVISSEVGS DHELQAVLLT CLYLSYSYMG NEISYPLKPF LVESCKEAFW DRCLSVINLM SSKMLQINAD PHYFTQVFSD LKNESGQEDK KRLLLGLDR. 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: p35 is a neuron specific activator of CDK5. The complex p35/CDK5 is required for neurite outgrowth and cortical lamination. Involved in dendritic spine morphogenesis by mediating the EFNA1-EPHA4 signaling. Activator of TPKII. The complex p35/CDK5 participates in the regulation of the circadian clock by modulating the function of CLOCK protein: phosphorylates CLOCK at 'Thr-451' and 'Thr-461' and regulates the transcriptional activity of the CLOCK-ARNTL/BMAL1 heterodimer in association with altered stability and subcellular distribution. Reference: "Cyclin-dependent kinase 5 (Cdk5) regulates the function of CLOCK protein by direct phosphorylation." Kwak Y., Jeong J., Lee S., Park Y.U., Lee S.A., Han D.H., Kim J.H., Ohshima T., Mikoshiba K., Suh Y.H., Cho S., Park S.K. J. Biol. Chem. 288:36878-36889(2013). Function: nan