PRPF8 Recombinant Monoclonal Antibody

Code CSB-RA157160A0HU
Size US$210
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Image
  • Western Blot
    Positive WB detected in: Hela whole cell lysate(30µg), HepG2 whole cell lysate(30µg), U-251MG whole cell lysate(30µg), COLO-205 whole cell lysate(30µg), K562 whole cell lysate(30µg)
    All lanes: PRPF8 antibody at 1:1000
    Secondary
    Goat polyclonal to rabbit IgG at 1/40000 dilution
    Predicted band size: 274 kDa
    Observed band size: 274 kDa
    Exposure time:1min
  • IHC image of CSB-RA157160A0HU diluted at 1:100 and staining in paraffin-embedded human testis tissue performed on a Leica BondTM system. After dewaxing and hydration, antigen retrieval was mediated by high pressure in a citrate buffer (pH 6.0). Section was blocked with 10% normal goat serum 30min at RT. Then primary antibody (1% BSA) was incubated at 4°C overnight. The primary is detected by a Goat anti-rabbit polymer IgG labeled by HRP and visualized using 0.05% DAB.
  • Overlay Peak curve showing Hela cells stained with CSB-RA157160A0HU (red line) at 1:100. The cells were fixed in 4% formaldehyde and permeated by 0.2% TritonX-100 for 10min. Then 10% normal goat serum to block non-specific protein-protein interactions followed by the antibody (1ug/1*106cells) for 45min at 4℃. The secondary antibody used was FITC-conjugated goat anti-rabbit IgG (H+L) at 1/200 dilution for 35min at 4℃.Control antibody (green line) was Rabbit IgG (1ug/1*106cells) used under the same conditions. Acquisition of >10,000 events was performed.
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Product Details

Uniprot No.
Target Names
PRPF8
Alternative Names
Pre-mRNA-processing-splicing factor 8 (220 kDa U5 snRNP-specific protein) (PRP8 homolog) (Splicing factor Prp8) (p220), PRPF8, PRPC8
Species Reactivity
Human
Immunogen
Recombinant Antibody
Immunogen Species
Homo sapiens (Human)
Conjugate
Non-conjugated
Clonality
Monoclonal
Isotype
Rabbit IgG
Clone No.
9B2
Purification Method
Affinity-chromatography
Concentration
It differs from different batches. Please contact us to confirm it.
Buffer
Rabbit IgG in 10mM phosphate buffered saline , pH 7.4, 150mM sodium chloride, 0.05% BSA, 0.02% sodium azide and 50% glycerol.
Form
Liquid
Tested Applications
ELISA, WB, IHC, FC
Recommended Dilution
Application Recommended Dilution
WB 1:500-1:5000
IHC 1:50-1:200
FC 1:50-1:200
Troubleshooting and FAQs
Storage
Upon receipt, store at -20°C or -80°C. Avoid repeated freeze.
Lead Time
Basically, we can dispatch the products out in 1-3 working days after receiving your orders. Delivery time maybe differs from different purchasing way or location, please kindly consult your local distributors for specific delivery time.
Description

PRPF8 stands as one of the largest and most highly conserved proteins in the spliceosome, serving as a central scaffold within the U5 small nuclear ribonucleoprotein complex. This 274 kDa splicing factor plays an essential role in pre-mRNA processing, positioning catalytic elements during both transesterification reactions of splicing. Mutations in PRPF8 have been linked to retinitis pigmentosa, making it a significant target for researchers investigating splicing disorders, retinal degeneration, and fundamental mechanisms of gene expression.

This recombinant rabbit monoclonal antibody, clone 9B2, offers the reproducibility and sequence-defined consistency that demanding splicing research requires. Generated against a synthetic peptide derived from human PRPF8, the antibody undergoes affinity chromatography purification to ensure high specificity for your target.

Validation studies demonstrate robust performance across multiple experimental platforms. Western blot analysis confirms detection of PRPF8 at the expected 274 kDa molecular weight across diverse human cell lines including HeLa, HepG2, U-251MG, COLO-205, and K562, indicating reliable detection in cells of epithelial, hepatic, glial, and hematopoietic origin. Immunohistochemistry testing in paraffin-embedded human testis tissue shows clear nuclear staining patterns consistent with PRPF8's role in pre-mRNA processing. Flow cytometry validation in HeLa cells further demonstrates the antibody's utility for quantitative single-cell analysis of this essential splicing factor.

Whether you are investigating spliceosome assembly, characterizing splicing factor dynamics, or exploring connections between RNA processing defects and disease, this antibody provides a dependable tool for immunohistochemistry and flow cytometry applications with recommended dilutions of 1:50–1:200 for both techniques.

Usage
For Research Use Only. Not for use in diagnostic or therapeutic procedures.

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Target Background

Function
Plays role in pre-mRNA splicing as core component of precatalytic, catalytic and postcatalytic spliceosomal complexes, both of the predominant U2-type spliceosome and the minor U12-type spliceosome. Functions as a scaffold that mediates the ordered assembly of spliceosomal proteins and snRNAs. Required for the assembly of the U4/U6-U5 tri-snRNP complex, a building block of the spliceosome. Functions as scaffold that positions spliceosomal U2, U5 and U6 snRNAs at splice sites on pre-mRNA substrates, so that splicing can occur. Interacts with both the 5' and the 3' splice site.
Gene References into Functions
  1. Multiple genes contributing to the retinal dystrophy genotypes within a family were discovered using retinal gene-targeted next-generation sequencing. Families with noted examples of phenotypic variation or apparent non-penetrant individuals may offer a clue to suspect complex inheritance. PMID: 28761320
  2. Frame-shift mutations and nonconservative amino acid changes in PRPF8 typically cause severe clinical phenotypes. The conservative missense variant p.PRPF8-Arg2310Lys that is not altering the global charge of the C-terminal tail, and variants located at the basis of the C-terminal tail show milder clinical phenotypes, in accordance with functional data on PRPF8/SNRNP200 interactions in yeast. PMID: 29087248
  3. HSP90/R2TP chaperone system promotes the assembly of a key module of U5 snRNP while assuring the quality control of PRPF8. The proteomics data further reveal new interactions between R2TP and the tuberous sclerosis complex, pointing to a potential link between growth signals and the assembly of key cellular machines. PMID: 28515276
  4. influenza A virus upregulates cellular PRPF8 gene expression through viral NS1 protein and influenza virus polymerase basic protein 1 to increase virus production. PMID: 28110426
  5. Our findings exemplify the regulatory potential of changes in the core spliceosome machinery, which may be relevant to slow-onset human genetic diseases linked to PRPF8 deficiency PMID: 26392272
  6. Most importantly between Prp8 and nucleotides at the exon-intron junction. PMID: 26385511
  7. A mutation in a splicing factor PRPF8 that causes retinitis pigmentosa has a transcriptome-wide effect on mRNA splicing. PMID: 24969741
  8. Data suggest Enterovirus 3DPol (RNA-dependent RNA polymerase) enters nucleus via nuclear localization signal, targets pre-mRNA processing factor 8 (Prp8) to block pre-mRNA splicing/mRNA synthesis, and shuts off cellular transcription/translation. PMID: 24968230
  9. In the cytoplasm, Prp8 forms a precursor complex with U5 snRNA PMID: 23727230
  10. these data show how a Ski2-like RNA helicase Brr2 can be reversibly inhibited by a protein cofactor Prp8 that directly competes with RNA substrate binding. PMID: 23704370
  11. This is the first report of marked intrafamilial variability associated with mutations in the PRPF8 gene, including incomplete penetrance. PRPF8 mutations should be suspected in patients with autosomal dominant retinitis pigmentosa. PMID: 22039234
  12. RP-PRPF defects affect the stoichiometry of spliceosomal small nuclear RNAs. Depleting PRPF8 in human cell lines alters alternative splicing. PMID: 21378395
  13. Data screened retinitis pigmentosa patients for PRPF8 mutations and identified three new missense mutations, including the first documented mutation outside exon 42 and the first de novo mutation. PMID: 20232351
  14. Mutations in PRPC8 is associated with autosomal dominant retinitis pigmentosa PMID: 11910553
  15. mutations revealed a novel insertion and deletion in the last exon of a splicing factor gene, PRPF8. PMID: 12601059
  16. Nine mutations, six of which are novel, in the pre-mRNA splicing-factor genes PRPF3, PRPF8, and PRPF31, causing adRP have been identified in the Spanish population. PMID: 12714658
  17. The gene for apoptosis regulated protein 2 (ARP2) overexpressed in apoptosis induced prostate cancer cell line LNCaP was cloned. PMID: 15786732
  18. The PRPF8 gene mutation is associated with a mild phenotype in which cone function is partially preserved. PMID: 17061239
  19. The expanded Prp8 Jab1/MPN domain represents a pseudoenzyme converted into a protein-protein interaction platform and that dysfunction of this platform underlies Retinitis pigmentosa. PMID: 17317632
  20. The severe form of autosomal dominant retinitis pigmentosa (adRP) was caused by the PRPF8 H2309R variant, whereas the IVS41-4G-->A variant was benign. PMID: 18695108
  21. Crystal structures of corresponding portions of yeast and human Prp8 that interact with functional regions of the pre-mRNA were determined, revealing a phylogenetically conserved RNase H fold, augmented by Prp8-specific elements. PMID: 18843295
  22. The aim of this study was to use lymphoblast cell lines derived from retinitis pigmentosa patients to determine whether mutations in two of these splicing factors, PRPF8 and PRPF31, cause measurable deficiencies in pre-mRNA splicing. PMID: 19096719

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Involvement in disease
Retinitis pigmentosa 13 (RP13)
Subcellular Location
Nucleus. Nucleus speckle.
Tissue Specificity
Widely expressed.
Database Links

HGNC: 17340

OMIM: 600059

KEGG: hsa:10594

STRING: 9606.ENSP00000304350

UniGene: Hs.181368

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