The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Additional notesProtein Determination: Extinction Coefficient (E) 0.1% at 280nm, 1cm pathway = 1.20.
Prepared from plasma shown to be non reactive for HBsAg, anti-HCV, anti-HBc, and negative for anti-HIV 1 & 2 by FDA approved tests.
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Preparation and Storage
Stability and Storage
Shipped at 4°C. Store at -20ºC.
Haptoglobin alpha chain
Haptoglobin alpha(1S) beta
Haptoglobin alpha(2FS) beta
Haptoglobin beta chain
Haptoglobin, alpha polypeptide
Haptoglobin, beta polypeptide
FunctionAs a result of hemolysis, hemoglobin is found to accumulate in the kidney and is secreted in the urine. Haptoglobin captures, and combines with free plasma hemoglobin to allow hepatic recycling of heme iron and to prevent kidney damage. Haptoglobin also acts as an Antimicrobial; Antioxidant, has antibacterial activity and plays a role in modulating many aspects of the acute phase response. Hemoglobin/haptoglobin complexes are rapidely cleared by the macrophage CD163 scavenger receptor expressed on the surface of liver Kupfer cells through an endocytic lysosomal degradation pathway. Uncleaved haptoglogin, also known as zonulin, plays a role in intestinal permeability, allowing intercellular tight junction disassembly, and controlling the equilibrium between tolerance and immunity to non-self antigens.
Tissue specificityExpressed by the liver and secreted in plasma.
Involvement in diseaseAnhaptoglobinemia
Sequence similaritiesBelongs to the peptidase S1 family. Contains 1 peptidase S1 domain. Contains 2 Sushi (CCP/SCR) domains.