SFSWAP Antibody
Description
Introduction to SFSWAP Antibody
The SFSWAP Antibody is a laboratory reagent designed to detect the splicing factor SWAP (SFSWAP) protein, encoded by the human SFSWAP gene. This protein is a nuclear-localized regulator of alternative splicing, with a reported molecular weight of 104.8 kDa and 951 amino acids . It functions by modulating intron retention and exon skipping, playing a critical role in pre-mRNA processing .
Applications of SFSWAP Antibody
The antibody is primarily used in molecular biology techniques to study SFSWAP protein expression and its role in splicing regulation. Common applications include:
Research Findings on SFSWAP Function
Recent studies highlight SFSWAP’s role as a global splicing regulator:
Role in Intron Retention and Exon Skipping
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Intron retention: SFSWAP negatively regulates splicing of retained introns, particularly those with decoy exons. Knockdown experiments show enhanced splicing of retained introns and increased cassette exon inclusion.
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OGT regulation: SFSWAP modulates the inclusion of a decoy exon within OGT intron 4, a key site for O-GlcNAc signaling. Its depletion increases splicing efficiency of this intron under high-O-GlcNAc conditions.
Global Splicing Regulation
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RNA-seq analysis revealed SFSWAP knockdown alters splicing in 252 downregulated and 633 upregulated genes.
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Sequence features: Retained introns with higher GC content are more efficiently spliced upon SFSWAP depletion.
Mechanistic Insights
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Protein interactions: Co-immunoprecipitation confirms binding to SF1 (branchpoint binding protein).
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Motif enrichment: SRSF1 binding sites are enriched at SFSWAP-dependent splicing events, suggesting collaborative regulation.
