Apolipoprotein H/APOH protein binds to heparin, phospholipids, and dextran sulfate, preventing activation of the blood coagulation cascade by interacting with phospholipids on damaged cell surfaces. Apolipoprotein H/APOH Protein, Mouse (HEK293, His) is the recombinant mouse-derived Apolipoprotein H/APOH protein, expressed by HEK293 , with C-His labeled tag.