MW: 250 kDa. Custom preparations, technical support, bulk quantities and aliquoting available.Human Serum Amyloid P is a small, non-fibrillar glycoprotein found in normal serum and in all amyloid deposits. SAP has a pentagonal structure and modulates immunologic responses in man, inhibits elastase and has been suggested as an indicator of liver disease and has 51% sequence homology with C-reactive protein (CRP).