Product: PRPF19 Antibody
Catalog: DF3628
Description: Rabbit polyclonal antibody to PRPF19
Application: WB IHC IF/ICC
Reactivity: Human, Mouse, Rat
Prediction: Pig, Bovine, Horse, Sheep, Rabbit, Dog, Chicken
Mol.Wt.: 50 KD; 55kD(Calculated).
Uniprot: Q9UMS4
RRID: AB_2836000

View similar products>>

   Size Price Inventory
 100ul $280 In stock
 200ul $350 In stock

Lead Time: Same day delivery

For pricing and ordering contact:
Local distributors

Product Info

WB 1:500-1:1000, IHC 1:50-1:200, IF/ICC 1:100-1:500
*The optimal dilutions should be determined by the end user.

WB: For western blot detection of denatured protein samples. IHC: For immunohistochemical detection of paraffin sections (IHC-p) or frozen sections (IHC-f) of tissue samples. IF/ICC: For immunofluorescence detection of cell samples. ELISA(peptide): For ELISA detection of antigenic peptide.

Pig(100%), Bovine(100%), Horse(100%), Sheep(100%), Rabbit(100%), Dog(100%), Chicken(88%)
PRPF19 Antibody detects endogenous levels of total PRPF19.
Cite Format: Affinity Biosciences Cat# DF3628, RRID:AB_2836000.
The antiserum was purified by peptide affinity chromatography using SulfoLink™ Coupling Resin (Thermo Fisher Scientific).
Rabbit IgG in phosphate buffered saline , pH 7.4, 150mM NaCl, 0.02% sodium azide and 50% glycerol. Store at -20 °C. Stable for 12 months from date of receipt.


hPso4; NMP200; Nuclear matrix protein 200; Nuclear matrix protein NMP200 related to splicing factor PRP19; pre mRNA processing factor 19; Pre-mRNA-processing factor 19; PRP19; PRP19/PSO4 homolog; PRP19/PSO4 pre-mRNA processing factor 19 homolog (S. cerevisiae); PRP19_HUMAN; PRPF19; PSO4; psoralen 4; Senescence evasion factor; SNEV; UBOX4;



Ubiquitous. Weakly expressed in senescent cells of different tissue origins. Highly expressed in tumor cell lines.




Score>80(red) has high confidence and is suggested to be used for WB detection. *The prediction model is mainly based on the alignment of immunogen sequences, the results are for reference only, not as the basis of quality assurance.

Model Confidence:
High(score>80) Medium(80>score>50) Low(score<50) No confidence

PTMs - Q9UMS4 As Substrate

Site PTM Type Enzyme
S2 Acetylation
S2 Phosphorylation
S18 Phosphorylation
K32 Ubiquitination
K56 Ubiquitination
K64 Ubiquitination
S67 Phosphorylation
K122 Acetylation
K122 Ubiquitination
S149 Phosphorylation
K179 Acetylation
K179 Ubiquitination
T184 Phosphorylation
T185 Phosphorylation
K192 Ubiquitination
T193 Phosphorylation
K200 Ubiquitination
K206 Acetylation
K206 Ubiquitination
K236 Ubiquitination
K244 Acetylation
K244 Ubiquitination
K251 Ubiquitination
T259 Phosphorylation
K261 Acetylation
K261 Ubiquitination
K266 Ubiquitination
S281 Phosphorylation
S283 Phosphorylation
S297 Phosphorylation
S307 Phosphorylation
T310 Phosphorylation
S313 Phosphorylation
Y329 Phosphorylation
T342 Phosphorylation
K380 Ubiquitination
Y405 Phosphorylation
K428 Ubiquitination
K500 Ubiquitination
S503 Phosphorylation

Research Backgrounds


Ubiquitin-protein ligase which is a core component of several complexes mainly involved pre-mRNA splicing and DNA repair. Required for pre-mRNA splicing as component of the spliceosome. Core component of the PRP19C/Prp19 complex/NTC/Nineteen complex which is part of the spliceosome and participates in its assembly, its remodeling and is required for its activity. During assembly of the spliceosome, mediates 'Lys-63'-linked polyubiquitination of the U4 spliceosomal protein PRPF3. Ubiquitination of PRPF3 allows its recognition by the U5 component PRPF8 and stabilizes the U4/U5/U6 tri-snRNP spliceosomal complex. Recruited to RNA polymerase II C-terminal domain (CTD) and the pre-mRNA, it may also couple the transcriptional and spliceosomal machineries. The XAB2 complex, which contains PRPF19, is also involved in pre-mRNA splicing, transcription and transcription-coupled repair. Beside its role in pre-mRNA splicing PRPF19, as part of the PRP19-CDC5L complex, plays a role in the DNA damage response/DDR. It is recruited to the sites of DNA damage by the RPA complex where PRPF19 directly ubiquitinates RPA1 and RPA2. 'Lys-63'-linked polyubiquitination of the RPA complex allows the recruitment of the ATR-ATRIP complex and the activation of ATR, a master regulator of the DNA damage response. May also play a role in DNA double-strand break (DSB) repair by recruiting the repair factor SETMAR to altered DNA. As part of the PSO4 complex may also be involved in the DNA interstrand cross-links/ICLs repair process. In addition, may also mediate 'Lys-48'-linked polyubiquitination of substrates and play a role in proteasomal degradation. May play a role in the biogenesis of lipid droplets (By similarity). May play a role in neural differentiation possibly through its function as part of the spliceosome (By similarity).

Subcellular Location:

Nucleus. Nucleus>Nucleoplasm. Cytoplasm>Cytoskeleton>Spindle. Cytoplasm. Lipid droplet.
Note: Nucleoplasmic in interphase cells. Irregularly distributed in anaphase cells. In prophase cells, uniformly distributed, but not associated with condensing chromosomes. Found in extrachromosomal regions in metaphase cells. Mainly localized to the mitotic spindle apparatus when chromosomes segregate during anaphase. When nuclei reform during late telophase, uniformly distributed in daughter cells and displays no preferred association with decondensing chromatin. Recruited on damaged DNA at sites of double-strand break.

Extracellular region or secreted Cytosol Plasma membrane Cytoskeleton Lysosome Endosome Peroxisome ER Golgi apparatus Nucleus Mitochondrion Manual annotation Automatic computational assertionSubcellular location
Tissue Specificity:

Ubiquitous. Weakly expressed in senescent cells of different tissue origins. Highly expressed in tumor cell lines.

Subunit Structure:

Homotetramer. Component of activated, catalytic and post-catalytic spliceosomes. Component of the Prp19 complex/PRP19C/Nineteen complex/NTC and related complexes described as PRP19-CDC5L splicing complex and PSO4 complex. A homotetramer of PRPF19, CDC5L, PLRG1 and BCAS2 constitute the core of those complexes. The interaction with CDC5L, PLRG1 and BCAS2 is direct within this core complex. At least three less stably associated proteins CTNNBL1, CWC15 and HSPA8 are found in the Prp19 complex. The Prp19 complex associates with the spliceosome during its assembly and remodeling recruiting additional proteins. Component of the XAB2 complex, a multimeric protein complex composed of XAB2, PRPF19, AQR, ZNF830, ISY1, and PPIE. Interacts with CWC22 and EIF4A3 in an RNA-independent manner. Interacts with RPA1 and RPA2; the PRP19-CDC5L complex is recruited to the sites of DNA repair where it interacts with the replication protein A complex (RPA). Interacts with SETMAR; required for SETMAR recruitment to site of DNA damage. Interacts with U2AF2; the interaction is direct and recruits the Prp19 complex to RNA polymerase II C-terminal domain (CTD) and the pre-mRNA. Interacts with PRPF3. Interacts with APEX1, DNTT and PSMB4. Interacts with PSMC5 (By similarity). Interacts with KNSTRN. Interacts (via N-terminus) with CDC5L (By similarity). Interacts with KHDC4.


The 7 WD repeats are necessary and sufficient to support interaction with the RPA complex.

Belongs to the WD repeat PRP19 family.

Research Fields

· Genetic Information Processing > Transcription > Spliceosome.

· Genetic Information Processing > Folding, sorting and degradation > Ubiquitin mediated proteolysis.   (View pathway)

Restrictive clause


Affinity Biosciences tests all products strictly. Citations are provided as a resource for additional applications that have not been validated by Affinity Biosciences. Please choose the appropriate format for each application and consult Materials and Methods sections for additional details about the use of any product in these publications.

For Research Use Only.
Not for use in diagnostic or therapeutic procedures. Not for resale. Not for distribution without written consent. Affinity Biosciences will not be held responsible for patent infringement or other violations that may occur with the use of our products. Affinity Biosciences, Affinity Biosciences Logo and all other trademarks are the property of Affinity Biosciences LTD.