Recombinant Human Cytoplasmic domain polyadenylation element-binding protein 1(CPEB1)

Code CSB-EP861184HU
Size US$1726
  • (Tris-Glycine gel) Discontinuous SDS-PAGE (reduced) with 5% enrichment gel and 15% separation gel.

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Product Details

Purity Greater than 90% as determined by SDS-PAGE.
Target Names CPEB1
Uniprot No. Q9BZB8
Research Area Epigenetics and Nuclear Signaling
Alternative Names CEBP; CPE binding protein 1; CPE BP1; CPE-binding protein 1; CPE-BP1; CPEB 1; CPEB; CPEB-1; CPEB1; CPEB1 protein; CPEB1_HUMAN; Cytoplasmic polyadenylation binding protein 1; Cytoplasmic polyadenylation element binding protein; Cytoplasmic polyadenylation element binding protein 1; Cytoplasmic polyadenylation element-binding protein 1; FLJ13203; h CEBP; h-CEBP; hCPEB 1; hCPEB-1; MGC34136; MGC60106; mKIAA0940; MKIAA0940 protein
Species Homo sapiens (Human)
Source E.coli
Expression Region 1-486aa
Note: The complete sequence including tag sequence, target protein sequence and linker sequence could be provided upon request.
Mol. Weight 69.6kDa
Protein Length Full Length of isoform 4
Tag Info N-terminal 6xHis-SUMO-tagged
Form Liquid or Lyophilized powder
Note: We will preferentially ship the format that we have in stock, however, if you have any special requirement for the format, please remark your requirement when placing the order, we will prepare according to your demand.
Buffer If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol.
Note: If you have any special requirement for the glycerol content, please remark when you place the order.
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.
and FAQs
Protein FAQs
Storage Condition Store at -20°C upon receipt, aliquoting is necessary for mutiple use. Avoid repeated freeze-thaw cycles.
Shelf Life 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.
Lead Time Delivery time may differ from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Notes Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet & COA Please contact us to get it.

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Target Data

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
Gene References into Functions
  1. These findings indicated that the overexpression of miR4543p inhibited cell proliferation, migration and invasion by downregulating CPEB1. PMID: 30106109
  2. Upon binding to p27(Kip1) 3'UTR, CPEB1 promotes elongation of poly-A tail and the subsequent translation of p27(Kip1) mRNA. This leads to higher levels of p27(Kip1) in the cell, in turn significantly inhibiting cell proliferation, and confers to CPEB1 a potential value as a tumor suppressor in Glioblastoma. PMID: 27142352
  3. CPEB1 regulation of MMP9 mRNA expression mediates metastasis of breast cancer cells PMID: 26411364
  4. The host RNA-binding protein CPEB1 was highly induced after cytomegalovirus infection and ectopic expression of CPEB1 in non-infected cells recapitulated infection-related post-transcriptional changes. CPEB1 was also required for poly(A)-tail lengthening of viral RNAs important for productive infection. PMID: 27775709
  5. Expression levels of CPEB4 and CPEB1 genes are correlated with overall survival in patients with glioma. PMID: 27000226
  6. WEE1 is regulated at the translational level by CPEB1 and miR-15b in a coordinated and cell-cycle-dependent manner. PMID: 27027998
  7. This mechanical catalysis makes possible a positive feedback loop that would help localize the formation of CPEB fibers to active synapse areas and mark those synapses for forming a long-term memory after the prion form is established. The functional role of the CPEB helical oligomers in this mechanism carries with it implications for targeting such species in neurodegenerative diseases. PMID: 27091989
  8. Structural Analysis of the Pin1-CPEB1 interaction and its potential role in CPEB1 degradation has been described. PMID: 26456073
  9. Identify a mechanism of VEGF overexpression in liver and mesentery that promotes pathologic, but not physiologic, angiogenesis, via sequential and nonredundant functions of CPEB1 and CPEB4. PMID: 26627607
  10. CPEB1, 2, and 4, are essential to successful mitotic cell division. PMID: 26398195
  11. Results suggest that CPEB1-mediated translational control is essential for the differentiation of GSCs. PMID: 25216517
  12. CPEB accelerates deadenylation and decay of the c-myc mRNA by recruiting the Tob-Caf1 complex. PMID: 23178487
  13. Downregulation of CPEB1 induces senescence of glioma cells in a p53-dependent manner. PMID: 23788032
  14. FMRP and CPEB1, an activator of translation, are present in neuronal dendrites, are predicted to bind many of the same mRNAs and may mediate a translational homeostasis that, when imbalanced, results in fragile X syndrome. PMID: 24141422
  15. The structural similarity to other ZZ domains suggests that the CPEB1-ZZ domain recruits sumoylated proteins during assembly of the ribonucleoprotein complex prior to mRNA export from the nucleus. PMID: 23500490
  16. results reveal a novel function of CPEB1 in mediating alternative 3'-UTR processing, which is coordinated with regulation of mRNA translation, through its dual nuclear and cytoplasmic functions PMID: 23434754
  17. poly(A) polymerase Gld2, deadenylase PARN, and translation inhibitory factor neuroguidin (Ngd) are components of a dendritic CPEB-associated polyadenylation apparatus PMID: 22727665
  18. The first evidence of CPEB1 involvement in GC is presented, along with the molecular mechanism underlying the regulation of its expression and its potential role in invasion and angiogenesis. PMID: 22052064
  19. CPEB-mediated zonal occludens-1 mRNA localization is essential for tight-junction assembly and mammary epithelial cell polarity PMID: 22334078
  20. depleted of CPEB demonstrated that this protein directly regulates the translation of PTEN and Stat3 mRNAs. Our results show that CPEB regulated translation is a key process involved in insulin signaling PMID: 22253608
  21. Gld4, a second non-canonical poly(A) polymerase, was found to regulate p53 mRNA polyadenylation/translation in a CPEB-dependent manner PMID: 21478871
  22. The loss of function CPEB1 protein would enhance tumorigenesis by promoting the survival of rapidly dividing and hypermetabolic tumor cells as levels of available nutrients decline. PMID: 20339377
  23. The authors show that the human CPEB1 can repress the activity of the reporter construct containing the HPV-16 early sequences. This repression can be counteracted by a human cytoplasmic poly(A) polymerase, hGLD-2 fused to CPEB1. PMID: 20144904
  24. CPEB1 has a role in compartmentalization of mRNA metabolism in the cytoplasm, between dcp1 bodies and stress granules PMID: 15731006
  25. Results show that CPEB1 is continuously shuttling between nucleus and cytoplasm, and its export is controlled by two redundant motifs dependent on the nuclear export receptor Crm1. PMID: 18923137
  26. CPEB controls senescence and bioenergetics in human cells at least in part by modulating p53 mRNA polyadenylation-induced translation PMID: 19141477
  27. U6snRNA, GAPDH mRNA and CPEB1 mRNA levels may be useful as tumor markers for genital cancers. PMID: 19161537

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Subcellular Location Cytoplasm, Nucleus, Cytoplasm, P-body, Cytoplasmic granule, Cell junction, synapse, Membrane, Cell junction, synapse, postsynaptic cell membrane, postsynaptic density, Cell projection, dendrite
Protein Families RRM CPEB family
Tissue Specificity Isoform 1 is expressed in immature oocytes, ovary, brain and heart. Isoform 2 is expressed in brain and heart. Isoform 3 and isoform 4 are expressed in brain. Expressed in breast tumors and several tumor cell lines.
Database Links

HGNC: 21744

OMIM: 607342

KEGG: hsa:64506

STRING: 9606.ENSP00000457881

UniGene: Hs.459132


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