Cytoplasmic domain polyadenylation element-binding protein 1 (CPEB1), human, recombinant

Organism: Homo sapiens (Human). Source: E.coli. Expression Region: 1-486aa. Protein Length: Full Length of isoform 4. Tag Info: N-terminal 6xHis-SUMO-tagged. Target Protein Sequence: MLFPTSAQES SRGLPDANDL CLGLQSLSLT GWDRPWSTQD SDSSAQSSTH SVLSMLHNPL GNVLGKPPLS FLPLDPLGSD LVDKFPAPSV RGSRLDTRPI LDSRSSSPSD SDTSGFSSGS DHLSDLISSL RISPPLPFLS LSGGGPRDPL KMGVGSRMDQ EQAALAAVTP SPTSASKRWP GASVWPSWDL LEAPKDPFSI EREARLHRQA AAVNEATCTW SGQLPPRNYK NPIYSCKVFL GGVPWDITEA GLVNTFRVFG SLSVEWPGKD GKHPRCPPKG YVYLVFELEK SVRSLLQACS HDPLSPDGLS EYYFKMSSRR MRCKEVQVIP WVLADSNFVR SPSQRLDPSR TVFVGALHGM LNAEALAAIL NDLFGGVVYA GIDTDKHKYP IGSGRVTFNN QRSYLKAVSA AFVEIKTTKF TKKVQIDPYL EDSLCHICSS QPGPFFCRDQ VCFKYFCRSC WHWRHSMEGL RHHSPLMRNQ KNRDSS. 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: Sequence-specific RNA-binding protein that regulates mRNA Cytoplasmic domain polyadenylation and translation initiation during oocyte maturation, early development and at postsynapse sites of neurons. Binds to the Cytoplasmic domain polyadenylation elent (CPE), an uridine-rich sequence elent (consensus sequence 5'-UUUUUAU-3') within the mRNA 3'-UTR. In absence of phosphorylation and in association with TACC3 is also involved as a repressor of translation of CPE-containing mRNA, a repression that is relieved by phosphorylation or degradation . Involved in the transport of CPE-containing mRNA to dendrites, those mRNAs may be transported to dendrites in a translationally dormant form and translationally activated at synapses . Its interaction with APLP1 promotes local CPE-containing mRNA polyadenylation and translation activation . Induces the assbly of stress granules in the absence of stress. Reference: Identification and characterization of the gene encoding human Cytoplasmic domain polyadenylation element binding protein.Welk J.F., Charlesworth A., Smith G.D., MacNicol A.M.Gene 263:113-120(2001). Function: Sequence-specific RNA-binding protein that regulates mRNA cytoplasmic polyadenylation and translation initiation during oocyte maturation, early development and at postsynapse sites of neurons. Binds to the cytoplasmic polyadenylation element (CPE), an uridine-rich sequence element (consensus sequence 5'-UUUUUAU-3') within the mRNA 3'-UTR. RNA binding results in a clear conformational change analogous to the Venus fly trap mechanism