Description
Serum Amyloid A4 (SAA4) is a constitutively expressed SAA protein that is also known as C-SAA. It is an apolipoprotein that constitutes more than 90% of SAA on HDL during homeostasis, and may be involved in lipid transfer between lipoprotein classes. Mature human SAA4 contains 112 amino acid (aa) residues. It is primarily produced in hepatocytes and secreted plasma. In solution, SAA4 is reported to form stable dimers and trimers. Human and mouse SAA4 share 57% aa sequence identity