Recombinant Epstein-Barr virus Epstein-Barr nuclear antigen 1 (EBNA1), partial

Code CSB-YP365878EFA
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Source Yeast
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Code CSB-BP365878EFA
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Source Baculovirus
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Code CSB-MP365878EFA
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Source Mammalian cell
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Product Details

Purity
>85% (SDS-PAGE)
Target Names
EBNA1
Uniprot No.
Alternative Names
EBNA1; BKRF1; Epstein-Barr nuclear antigen 1; EBNA-1; EBV nuclear antigen 1
Species
Epstein-Barr virus (strain B95-8) (HHV-4) (Human herpesvirus 4)
Protein Length
Partial
Tag Info
Tag type will be determined during the manufacturing process.
The tag type will be determined during production process. If you have specified tag type, please tell us and we will develop the specified tag preferentially.
Form
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 before Lyophilization
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℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Troubleshooting and FAQs
Storage Condition
Store at -20°C/-80°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.
Note: All of our proteins are default shipped with normal blue ice packs, if you request to ship with dry ice, please communicate with us in advance and extra fees will be charged.
Notes
Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.
Datasheet
Please contact us to get it.

Customer Reviews and Q&A

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Target Background

Function
Plays an essential role in replication and partitioning of viral genomic DNA during latent viral infection. During this phase, the circular double-stranded viral DNA undergoes replication once per cell cycle and is efficiently partitioned to the daughter cells. EBNA1 activates the initiation of viral DNA replication through binding to specific sites in the viral latent origin of replication, oriP. Additionally, it governs the segregation of viral episomes by mediating their attachment to host cell metaphase chromosomes. Also activates the transcription of several viral latency genes. Finally, it can counteract the stabilization of host p53/TP53 by host USP7, thereby decreasing apoptosis and increasing host cell survival.
Gene References into Functions
  1. Endemic variants of EBNA1 play a significant role in EBV-driven carcinogenesis by altering key regulatory interactions that destabilize latent infection. PMID: 28077791
  2. Epstein-Barr Virus EBNA1 bound to host genes of high significance for B-cell growth and function, including MEF2B, IL6R, and EBF1. PMID: 26468528
  3. both LANA1 and EBNA1 undergo highly efficient +1/-2 programmed ribosomal frameshifting to generate previously undescribed alternative reading frame (ARF) proteins in their repeat regions. PMID: 25271323
  4. Epstein-Barr virus EBNA1 protein regulates viral latency through effects on let-7 microRNA and dicer. PMID: 25031339
  5. EBNA-1 miRNA targets human casp3 expression to inhibit apoptosis. PMID: 23503461
  6. These results support the idea that the chromosome binding of EBNA1 is mediated by electrostatic interactions between the basic amino acids within the chromosome binding domains and negatively charged cellular chromatin. PMID: 23836915
  7. There is no association between EBNA1 titers and multiple sclerosis in Indian populations. PMID: 23312038
  8. EBNA1 is not naturally released from Epstein-Barr virus-infected cells as a source of antigen for CD4(+) T cell priming. PMID: 23569328
  9. EBNA1 repeat mRNA sequence, not the encoded protein sequence, underlies immune evasion in this class of virus suggests a novel approach to therapeutic development through the use of anti-sense strategies or small molecules targeting EBNA1 mRNA structure. PMID: 23300450
  10. EBNA1 binds specifically to many sites in the human genome and may regulate some cellular genes in infected cells. [review] PMID: 23325328
  11. These findings highlight a previously unrecognized property of the interaction of EBNA1 with cellular chromatin that may fine-tune its function in the maintenance of viral latency. PMID: 23348225
  12. EBNA1 may reset cellular transcription during infection and prime the infected cells for malignant transformation. PMID: 23358825
  13. Data show that purified Epstein-Barr nuclear antigen 1 EBNA1 recruits purified Human Orc1 and Cdc6 onto replication origin oriP. PMID: 22589552
  14. These results provide the first function for EBNA1 in lytic infection and show that EBNA1 interactions with PML IV lead to a loss of PML nuclear bodies (NBs) that promotes lytic infection. PMID: 22491455
  15. Studies indicate that that EBNA1 is a very important protein for the development and/or progression of nasopharyngeal carcinoma. PMID: 22206863
  16. Although the depletion of HMGB2 partly altered EBNA-1 association with chromatin in HeLa cells during interphase and mitosis, it did not significantly impact the maintenance of EBV episomes in Raji cells. PMID: 22345443
  17. These findings support the hypothesis that Epstein-Barr virus EBNA1 initiates transcription at the C promoter via interactions between multiple EBNA1 homodimers and cellular transcription such as E2F1, ARID3A and Oct-2. PMID: 22302879
  18. Report Epstein-Barr virus nuclear antigen-1 B-cell epitopes in multiple sclerosis twins. PMID: 21757535
  19. PML disruption by EBNA1 is one mechanism by which EBV contribute to the development of gastric cancer. PMID: 22013060
  20. EBNA1 of Epstein-Barr virus modulated cellular oxidative stress responses and promoted metastasis. PMID: 22013061
  21. The pathogenesis of multiple sclerosis may involve intrathecal Epstein-Barr virus nuclear antigen-1 (EBNA-1) specific T cells susceptible to modulation by vitamin D. PMID: 22018702
  22. These results provide evidence that EBNA1 is a new target for the transcription factor HSF1. PMID: 22018489
  23. expression of EBNA1 induced telomere abnormalities including loss or gain of telomere signals, telomere fusion and heterogeneous length of telomeres PMID: 21394098
  24. antibodies to the EBNA-1 protein cross-react with dsDNA PMID: 21245919
  25. These data indicate that roscovitine effects are serine 393 specific and that serine 393 is important in EBNA1- and oriPCp-dependent transcription and episome persistence. PMID: 21209116
  26. Epstein Barr virus-encoded EBNA1 interference with MHC class I antigen presentation reveals a close correlation between mRNA translation initiation and antigen presentation. PMID: 20976201
  27. These results suggest that EBV encoded EBNA1 can contribute to the oncogenic process by up-regulating the apoptosis suppressor protein, survivin in EBV-associated B-lymphoma cells. PMID: 21093004
  28. Findings reveal that RNA polymerase III-dependent EBER expression through induction of cellular transcription factors and add to the repertoire of EBNA1's transcription-regulatory properties. PMID: 20843307
  29. EBNA1 can interact with a large number of cellular genes and chromosomal loci in latently infected cells, but that these sites are likely to represent a complex ensemble of direct and indirect EBNA1 binding sites. PMID: 20929547
  30. an interaction between EBNA1 and the host CK2 kinase is crucial for EBNA1 to disrupt PML bodies and degrade PML proteins. PMID: 20719947
  31. EBNA-1 may directly influence the transcription of a subset of genes PMID: 20706582
  32. 40 novel regions are identified in the human genome, constituted of tandemly repeated binding sites for EBNA1. PMID: 20655080
  33. EBV infection with EBNA1 expression in gastric carcinomas provides advantages for host cell survival, growth ability and transformation potential involving escape from immunosurveillance PMID: 19956844
  34. effect of EBNA1 on cellular gene expression by microarray analysis using the B cell BJAB and the epithelial 293 cell lines transfected with EBNA1 PMID: 20080792
  35. findings suggest amino-terminal 379Lys-Arg380 is essential for EBNA-1 NLS & Ser385 phosphorylation up-regulates nuclear transport efficiency of EBNA-1 by increasing its binding affinity to NPI-1, while phosphorylation of Ser386 & Ser383 down-regulates it PMID: 16439554
  36. The partitioning of EBNA1 molecules onto sister chromatids during cellular DNA replication underlies the non-stochastic segregation of extrachromosomally replicating viral genomes. PMID: 17405814
  37. EBNA1 apparently disables TGF-beta signaling, which subsequently decreases transcription of the PTPRK tumor suppressor PMID: 17720884
  38. The mechanism by which EBNA-1 represses Qp promoter through binding downstream of the transcription start site and the role of this autoregulatory function in EBV latency were addressed. PMID: 18077719
  39. targeting EBNA1 to human DEC-205 receptor, in the presence of the DC maturation stimulus poly(I:C), expanded EBNA1-specific CD4 and CD8 memory T cells; these lymphocytes control the outgrowth of autologous EBV-infected B cells PMID: 18519810
  40. low-level expression of p27 protein may partially attribute to latent EBV infection in extranodal nasal-type NK cell lymphoma involving EBNA1 PMID: 18769118
  41. EBNA1-NT may act as a repressor of the HER2/neu oncogene PMID: 18805633
  42. Epstein-Barr virus nuclear antigen-1 promotes genomic instability via induction of reactive oxygen species PMID: 19139406
  43. EBNA1 regulates oriP replication by impeding the migration of replication forks, and upon binding the family of repeats it blocks the migration of transcription forks. PMID: 19265546
  44. Phosphorylation-deficient mutant reduced its ability to activate transcription. PMID: 19439552
  45. These findings suggest that the EBNA1 replication and maintenance function uses a common G-quadruplex binding capacity of LR1 and LR2. PMID: 19656898
  46. USP7 can stimulate EBNA1-DNA interactions and EBNA1 can alter histone modification at oriP through recruitment of USP7. PMID: 19834552

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Subcellular Location
Host nucleus.
Protein Families
Herpesviridae EBNA1 family
Database Links

KEGG: vg:3783774

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