SPARC proteins are essential for lipid transport and are involved in the production, transformation, and clearance of plasma lipoproteins. It interacts with different particles, shows a preference for HDL, and binds to cellular receptors such as LDLR and VLDLR to promote the uptake of APOE-containing lipoproteins. SPARC Protein, Human (HEK293, His) is the recombinant human-derived SPARC protein, expressed by HEK293 , with C-6*His labeled tag.