• USA Home
  • H3536 - Haptoglobin from pooled human plasma

H3536 Sigma

Haptoglobin from pooled human plasma

≥95% (SDS-PAGE), lyophilized powder



Related Categories Biochemicals and Reagents, Cell Biology, Cell Signaling and Neuroscience, Haptoglobin, Immune Cell Signaling and Blood,
assay   ≥95% (SDS-PAGE)
form   lyophilized powder
solubility   H2O: soluble 10 mg/mL
storage temp.   −20°C
Gene Information   human ... HP(3240)


Biochem/physiol Actions

Functions by binding to plasma hemoglobin (from hemolysis). The complex is removed from the circulation, by binding to CD163 receptors on macrophages, to salvage iron and prevent oxidative damage.

Other Notes

Occurs as 3 major phenotypes: type 1-1, type 2-1, type 2-2.


Haptoglobin was used to study induction of the acrosome reaction in sperm. Exposure to low temperature increases their rate of fusion with zona-free hamster oocytes.

General description

Haptoglobin is an α2-globulin found in normal plasma at a concentration of 82-236 mg/dl and accounts for 0.4-2.6% of the total plasma proteins.The monomeric form of this acute phase plasma protein is composed of four polypeptide chains: two α chains and two β chains.

Haptoglobin is an acute phase protein that scavenges hemoglobin released into the circulation. Haptoglobin, the plasma protein with highest binding affinity to hemoglobin, is mainly expressed in the liver.

Price and Availability

All labs need water
Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Protocols & Articles


HPLC Analysis of Plasma Proteins on BIOshell™ A400 Protein C4

From our library of Articles, Sigma-Aldrich presents HPLC Analysis of Plasma Proteins on BIOshell™ A400 Protein C4
Keywords: Chromatography, Clinical, High performance liquid chromatography

Plasma Derived Proteins and Enzymes

Despite their complexity, blood and plasma are abundant biological resources for the discovery of drug targets and biomarkers for human disease. It is estimated that plasma may contain as many as 40,...
BioFiles 2006, 1.5, 2.
Keywords: Applications, Gas chromatography, Type

Peer-Reviewed Papers


Related Products

related product

Product #


Add to Cart

92210 Timestrip Plus 0 °C
06693 Timestrip Plus -20 °C

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?