Anti-SRSF1 Antibody


Reactivity: Human
Applications: ELISA,IHC
Conjugation: Various

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Rabbit Anti-SRSF1 Antibody (CSB-PA021142ESR2HU)


Alternative names:

Alternative-splicing factor 1 Antibody,ASF-1 Antibody,Splicing factor Antibody, arginine/serine-rich 1 Antibody,pre-mRNA-splicing factor SF2 Antibody, P33 subunit Antibody,SRSF1 Antibody,ASF Antibody, SF2 Antibody, SF2P33 Antibody, SFRS1 Antibody,OK/SW-cl.3 Antibody

More alternative names for the antibody
Alternative splicing factor 1 antibody|Alternative-splicing factor 1 antibody|arginine/serine-rich 1 antibody|ASF 1 antibody|ASF antibody|ASF-1 antibody|ASF1 antibody|FLJ53078 antibody|MGC5228 antibody|P33 subunit antibody|Pre mRNA splicing factor SF2 P33 subunit antibody|pre-mRNA-splicing factor SF2 antibody|Serine/arginine-rich splicing factor 1 antibody|SF2 antibody|SF2P33 antibody|SFRS1 antibody|Splicing factor 2 alternate splicing factor antibody|Splicing factor 2 antibody|Splicing factor antibody|Splicing factor arginine/serine rich 1 antibody|SR Splicing factor 1 antibody|SRp30a antibody|srsf1 antibody|SRSF1_HUMAN antibody
Anti-SF2 antibody (ab38017)

Recommended applications: ELISA, IHC

Recommended dilution: Recommended dilution:IHC:1:20-1:200

Recommended protocols: check protocols


Anti-SRSF1 Antibody

Catalogue No.





Recombinant human Serine/arginine-rich splicing factor 1 protein (1-248AA)











Molecular weight

27 kDa


Antigen Affinity Purified


Shipped at 4 Celcius Degree. Upon delivery aliquot and store at -20 Celcius Degree or -80 Celcius Degree. Avoid repeated freeze.

Protein 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. May function as export adapter involved in mRNA nuclear export through the TAP/NXF1 pathway. .

Protein sequence and domain

Belongs to the splicing factor SR family. 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.

Protein post-translational modifications

Phosphorylated 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. .; Asymmetrically dimethylated at arginines, probably by PRMT1, methylation promotes localization to nuclear speckles. .

Protein cellular localization

Cytoplasm . Nucleus speckle . Note=In nuclear speckles. Shuttles between the nucleus and the cytoplasm. .

Research area

<a href="">All research areas</a>><a href="">Transcription Regulators</a>><a href="">SF2/ASF</a><br><a href=""&gt; (View all antibody categories related to Transcription Regulators)</a>


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Product type

Primary antibody


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