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     The image is immunohistochemistry of paraffin-embedded Human gastric cancer tissue using P09948(PAXIP1 Antibody) at dilution 1/80. (Original magnification: ×200)    

  
  

The PAXIP1 (Pax Interacting Protein 1) antibody is a tool used to study the PAXIP1 protein, a key regulator involved in DNA repair, chromatin remodeling, and transcriptional regulation. PAXIP1. also known as PTIP, interacts with the Pax family of transcription factors and participates in multiple cellular processes. It plays a critical role in maintaining genomic stability by facilitating the recruitment of DNA damage response (DDR) proteins, such as 53BP1. to sites of double-strand breaks. Additionally, PAXIP1 associates with histone-modifying complexes like MLL3/MLL4 to regulate histone H3K4 methylation, influencing gene expression during development and differentiation.

Antibodies targeting PAXIP1 are widely used in research to investigate its expression, localization, and interactions in various contexts, including cancer, neurodevelopment, and immune responses. Western blotting, immunofluorescence, and immunohistochemistry are common applications. Dysregulation of PAXIP1 has been linked to tumorigenesis, as it modulates cell cycle checkpoints and apoptosis. Studies also suggest its involvement in class-switch recombination in B cells, highlighting its importance in adaptive immunity. Researchers utilize PAXIP1 antibodies to explore its role in epigenetic regulation and DDR pathways, providing insights into therapeutic targets for diseases associated with genomic instability or aberrant gene expression. Specificity and validation of these antibodies are critical, as PAXIP1 shares functional domains with other PTIP-family proteins.