- Tel: 858.663.9055
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Email: info@nsjbio.com
- Tel: 858.663.9055
- Email: info@nsjbio.com
SPOPL antibody detects Speckle-type POZ protein-like, a nuclear adaptor protein that regulates protein ubiquitination and transcriptional repression. Encoded by the SPOPL gene on chromosome 2q22.1, this protein is a homolog of SPOP (Speckle-type POZ protein) and functions as a substrate adaptor within the CUL3-based E3 ubiquitin ligase complex. SPOPL recruits specific nuclear proteins for ubiquitin-dependent degradation, thereby modulating chromatin structure, transcriptional activity, and protein homeostasis.
Structurally, SPOPL is a 367-amino-acid nuclear protein of approximately 41 kilodaltons containing a BTB/POZ domain responsible for CUL3 interaction and a MATH domain that recognizes substrate proteins. Unlike its paralog SPOP, which forms higher-order oligomers, SPOPL exists as a stable dimer, influencing substrate specificity and ubiquitination efficiency. SPOPL localizes to nuclear speckles and chromatin-associated regions, where it coordinates the degradation of transcriptional co-regulators and chromatin modifiers.
The SPOPL antibody is widely used in cell biology, molecular genetics, and oncology research to study ubiquitin signaling, transcriptional repression, and nuclear protein quality control. Western blot analysis detects a 41 kilodalton band corresponding to SPOPL, while immunofluorescence shows punctate nuclear staining consistent with speckle localization. This antibody enables exploration of nuclear ubiquitin pathways and their effects on gene expression and chromatin remodeling.
Functionally, SPOPL forms part of the CUL3-RBX1 ubiquitin ligase complex, targeting proteins involved in chromatin regulation and transcriptional activation. By controlling the degradation of co-regulators, SPOPL influences gene silencing, cell cycle progression, and developmental signaling. Dysregulation of SPOPL expression has been linked to cancer, where altered ubiquitin signaling contributes to genomic instability and transcriptional imbalance. The SPOPL antibody provides a reliable reagent for studying these nuclear pathways and understanding adaptor-mediated substrate selection in ubiquitin ligase systems. NSJ Bioreagents validates this antibody for its applications, ensuring precise and reproducible detection in ubiquitin signaling and transcriptional studies.
Optimal dilution of the SPOPL antibody should be determined by the researcher.
E.coli-derived human SPOPL recombinant protein (Position: H173-Q361) was used as the immunogen for the SPOPL antibody.
After reconstitution, the SPOPL antibody can be stored for up to one month at 4oC. For long-term, aliquot and store at -20oC. Avoid repeated freezing and thawing.
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