Recombinant Anti-SF2 antibody [EPR8240] - BSA and Azide free (ab248619)
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- References
- Protocols
Overview
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Product name
Anti-SF2 antibody [EPR8240] - BSA and Azide free
See all SF2 primary antibodies -
Description
Rabbit monoclonal [EPR8240] to SF2 - BSA and Azide free -
Host species
Rabbit -
Specificity
The mouse and rat recommendation is based on the WB results. We do not guarantee IHC-P for mouse and rat.
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Tested applications
Suitable for: ICC/IF, WB, Flow Cyt, IHC-Pmore details
Unsuitable for: IP -
Species reactivity
Reacts with: Mouse, Rat, Human -
Immunogen
Synthetic peptide within Human SF2 aa 150-250 (internal sequence). The exact sequence is proprietary.
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Positive control
- IHC-P: Human colon and stomach tissue; ICC/IF: HeLa cells; FC:HeLa cells.
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General notes
Ab248619 is the carrier-free version of ab133689. This format is designed for use in antibody labeling, including fluorochromes, metal isotopes, oligonucleotides, enzymes.
Our carrier-free formats are supplied in a buffer free of BSA, sodium azide and glycerol for higher conjugation efficiency.
Use our conjugation kits for antibody conjugates that are ready-to-use in as little as 20 minutes with <1 minute hands-on-time and 100% antibody recovery: available for fluorescent dyes, HRP, biotin and gold.
ab248619 is compatible with the Maxpar® Antibody Labeling Kit from Fluidigm.
Maxpar® is a trademark of Fluidigm Canada Inc.
Our RabMAb® technology is a patented hybridoma-based technology for making rabbit monoclonal antibodies. For details on our patents, please refer to RabMab® patents.
We are constantly working hard to ensure we provide our customers with best in class antibodies. As a result of this work we are pleased to now offer this antibody in purified format. We are in the process of updating our datasheets. The purified format is designated 'PUR' on our product labels. If you have any questions regarding this update, please contact our Scientific Support team.
This product is a recombinant rabbit monoclonal antibody.
Properties
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Form
Liquid -
Storage instructions
Shipped at 4°C. Store at +4°C short term (1-2 weeks). Upon delivery aliquot. Store at -20°C long term. Avoid freeze / thaw cycle. -
Dissociation constant (KD)
KD = 5.70 x 10 -11 M Learn more about KD -
Storage buffer
Constituent: PBS -
Concentration information loading... -
Purity
Protein A purified -
Clonality
Monoclonal -
Clone number
EPR8240 -
Isotype
IgG -
Research areas
Associated products
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Alternative Versions
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Conjugation kits
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Positive Controls
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Recombinant Protein
Applications
Our Abpromise guarantee covers the use of ab248619 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
| Application | Abreviews | Notes |
|---|---|---|
| ICC/IF | Use at an assay dependent concentration. | |
| WB | Use at an assay dependent concentration. Predicted molecular weight: 27 kDa. | |
| Flow Cyt | Use at an assay dependent concentration. | |
| IHC-P | Use at an assay dependent concentration. Perform heat mediated antigen retrieval with citrate buffer pH 6 before commencing with IHC staining protocol. See IHC antigen retrieval protocols. The mouse and rat recommendation is based on the WB results. We do not guarantee IHC-P for mouse and rat. |
Target
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Function
Plays a role in preventing exon skipping, ensuring the accuracy of splicing and regulating alternative splicing. Interacts with other spliceosomal components, via the RS domains, to form a bridge between the 5'- and 3'-splice site binding components, U1 snRNP and U2AF. Can stimulate binding of U1 snRNP to a 5'-splice site-containing pre-mRNA. Binds to purine-rich RNA sequences, either the octamer, 5'-RGAAGAAC-3' (r=A or G) or the decamers, AGGACAGAGC/AGGACGAAGC. Binds preferentially to the 5'-CGAGGCG-3' motif in vitro. Three copies of the octamer constitute a powerful splicing enhancer in vitro, the ASF/SF2 splicing enhancer (ASE) which can specifically activate ASE-dependent splicing. Isoform ASF-2 and isoform ASF-3 act as splicing repressors. -
Sequence similarities
Belongs to the splicing factor SR family.
Contains 2 RRM (RNA recognition motif) domains. -
Domain
The RRM 2 domain plays an important role in governing both the binding mode and the phosphorylation mechanism of the RS domain by SRPK1. RS domain and RRM 2 are uniquely positioned to initiate a highly directional (C-terminus to N-terminus) phosphorylation reaction in which the RS domain slides through an extended electronegative channel separating the docking groove of SRPK1 and the active site. RRM 2 binds toward the periphery of the active site and guides the directional phosphorylation mechanism. Both the RS domain and an RRM domain are required for nucleocytoplasmic shuttling. -
Post-translational
modificationsPhosphorylated by CLK1, CLK2, CLK3 and CLK4. Phosphorylated by SRPK1 at multiple serines in its RS domain via a directional (C-terminal to N-terminal) and a dual-track mechanism incorporating both processive phosphorylation (in which the kinase stays attached to the substrate after each round of phosphorylation) and distributive phosphorylation steps (in which the kinase and substrate dissociate after each phosphorylation event). The RS domain of SRSF1 binds to a docking groove in the large lobe of the kinase domain of SRPK1 and this induces certain structural changes in SRPK1 and/or RRM 2 domain of SRSF1, allowing RRM 2 to bind the kinase and initiate phosphorylation. The cycles continue for several phosphorylation steps in a processive manner (steps 1-8) until the last few phosphorylation steps (approximately steps 9-12). During that time, a mechanical stress induces the unfolding of the beta-4 motif in RRM 2, which then docks at the docking groove of SRPK1. This also signals RRM 2 to begin to dissociate, which facilitates SRSF1 dissociation after phosphorylation is completed.
Arg-97 is dimethylated, probably to asymmetric dimethylarginine. -
Cellular localization
Cytoplasm. Nucleus speckle. In nuclear speckles. Shuttles between the nucleus and the cytoplasm. - Information by UniProt
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Database links
- Entrez Gene: 6426 Human
- Entrez Gene: 110809 Mouse
- Entrez Gene: 689890 Rat
- Omim: 600812 Human
- SwissProt: Q07955 Human
- SwissProt: Q6PDM2 Mouse
- Unigene: 68714 Human
- Unigene: 391719 Mouse
see all -
Alternative names
- Alternative splicing factor 1 antibody
- Alternative-splicing factor 1 antibody
- arginine/serine-rich 1 antibody
see all
Images
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![Flow Cytometry - Anti-SF2 antibody [EPR8240] - BSA and Azide free (ab248619)](https://www.abcam.com/ps/products/248/ab248619/Images/ab248619-3-anti-sf2-antibody-epr8240-flowcytometry-hela-human.jpg)
Flow Cytometry - Anti-SF2 antibody [EPR8240] - BSA and Azide free (ab248619)Flow Cytometry analysis of HeLa (Human cervix adenocarcinoma epithelial cell) cells labeling SF2 with purified ab133689 at 1/40 dilution (10 µg/ml) (Red). Cells were fixed with 4% Paraformaldehyde and permeabilised with 90% Methanol. A Goat anti rabbit IgG (Alexa Fluor® 488, ab150077) secondary antibody was used at 1/2000. Isotype control - Rabbit monoclonal IgG (Black). Unlabeled control - Cell without incubation with primary antibody and secondary antibody (Blue).
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab133689)
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![Immunocytochemistry/ Immunofluorescence - Anti-SF2 antibody [EPR8240] - BSA and Azide free (ab248619)](https://www.abcam.com/ps/products/248/ab248619/Images/ab248619-2-anti-sf2-antibody-epr8240-immunocytochemistry-hela-human.jpg)
Immunocytochemistry/ Immunofluorescence - Anti-SF2 antibody [EPR8240] - BSA and Azide free (ab248619)Immunocytochemistry/ Immunofluorescence analysis of HeLa (Human cervix adenocarcinoma epithelial cell) cells labeling SF2 with purified ab133689 at 1/50 dilution (8.3 µg/ml). Cells were fixed in 4% Paraformaldehyde and permeabilized with 0.1% tritonX-100. Cells were counterstained with ab195889 Anti-alpha Tubulin antibody [DM1A] - Microtubule Marker (Alexa Fluor® 594) 1/200 (2.5 µg/ml). Goat anti rabbit IgG (Alexa Fluor® 488, ab150077) was used as the secondary antibody at 1/1000 (2 µg/ml) dilution. DAPI (blue) was used as nuclear counterstain. PBS instead of the primary antibody was used as the secondary antibody only control.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (anti sf2 antibody epr8240 immunocytochemistry hela human) -
![Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-SF2 antibody [EPR8240] - BSA and Azide free (ab248619)](https://www.abcam.com/ps/products/248/ab248619/Images/ab248619-1-anti-sf2-antibody-epr8240-immunohistochemistry-stomach-human.jpg)
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-SF2 antibody [EPR8240] - BSA and Azide free (ab248619)Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) analysis of human stomach tissue sections labeling SF2 with Purified ab133689 at 1/100 dilution (4.16 µg/ml). Heat mediated antigen retrieval was performed perform heat mediated antigen retrieval using Citrate buffer, pH 6.0. ImmunoHistoProbe one step HRP Polymer (ready to use) was used as the secondary antibody. Negative control: PBS instead of the primary antibody. Hematoxylin was used as a counterstain.
This data was developed using the same antibody clone in a different buffer formulation containing PBS, BSA, glycerol, and sodium azide (ab133689)
Datasheets and documents
References
ab248619 has not yet been referenced specifically in any publications.
