Collection: Recombinant Human Sphingolipid Activator Proteins (Saposins)

Sphingolipid Activator Proteins (SAPs), collectively known as Saposins, are small, non-enzymatic, heat-stable glycoproteins localized primarily within the lysosomal compartment. Derived from a single precursor protein, prosaposin, the four distinct mature domains—Saposin A, B, C, and D—serve as essential biological cofactors. They structurally reorganize lipid membranes and physically present sphingolipids to specific hydrolytic enzymes for degradation. Dysregulation or deficiency in individual saposins is heavily implicated in lysosomal storage diseases, metabolic disorders, and neurodegenerative pathways, making high-purity recombinant variants invaluable tools for therapeutic development.

Key Research & Assay Applications

• Lipid Metabolism & Enzymology Studies: Ideal for reconstitution assays investigating lysosomal hydrolase activity and lipid-protein biophysics.
• Drug Delivery Systems: Used in the engineering of biocompatible saposin-lipoprotein nanoparticles (e.g., SapC-DOPS) for selective, membrane-targeted therapeutic delivery.
• Oncology & Translational Research: Essential reagents for analyzing tumor microenvironment interactions, apoptosis induction, and biomarker validation.
• Neuroscience & Biomarker Discovery: Vital tools for profiling sphingolipid accumulation profiles in neurodegenerative disease models.

Product Availability

Amid Biosciences offers a comprehensive portfolio of high-purity, low-endotoxin recombinant human Saposins (A, B, C, and D) expressed in optimized bacterial systems to ensure robust structural integrity and reproducible assay performance.

All products in this collection are intended for laboratory research use only (RUO).