Zebrafish Smarca4a Antibody / Smarca4, 100 ug

Zebrafish Smarca4a is an ATP dependent chromatin remodeling enzyme that functions as the catalytic core of the Swi Snf type remodeling complexes. By using the energy of ATP hydrolysis, Smarca4a repositions or evicts nucleosomes to regulate access of transcription factors and the transcriptional machinery to DNA. Through this activity Smarca4a controls gene expression programs that are essential for early embryogenesis, tissue differentiation, stem cell maintenance, and responses to developmental and environmental signals.

Smarca4a in zebrafish is an ortholog of the human SMARCA4 protein also widely known as Brg1. The zebrafish protein shows strong sequence and functional conservation with the human enzyme, supporting the use of zebrafish as a model to study conserved mechanisms of chromatin remodeling and their roles in development and disease. Zebrafish also carries a related paralog named Smarca4b, which allows comparative analyses of partially overlapping and partially specialized functions within the genome duplication context of teleosts.

Smarca4a is broadly expressed during zebrafish development, with higher levels in rapidly proliferating and differentiating tissues where large scale transcriptional reprogramming is required. Loss of Smarca4a function disrupts body patterning, organogenesis, and cell fate specification, underscoring its central role in controlling chromatin structure and transcription.

Antibodies directed against zebrafish Smarca4a are valuable reagents for studying epigenetic regulation, transcriptional control, and developmental pathways. Typical applications include western blot to assess protein abundance, immunohistochemistry and immunofluorescence to map spatial expression in embryos and tissues, chromatin immunoprecipitation to define genomic binding sites, and immunoprecipitation based assays to characterize Swi Snf complex composition.

Because zebrafish Smarca4a is an ortholog of human SMARCA4, findings obtained with these antibodies can inform research on human developmental disorders, cancer, and other diseases linked to defects in chromatin remodeling.