SRP6507
Haptoglobin (Phenotype 1-1) from human plasma
≥95% (SDS-PAGE)
Synonym(s):
Hp 1-1
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General description
Haptoglobin is a positive acute-phase plasma α2-sialoglycoprotein, and exists as three major phenotypes namely Hp 1-1, Hp 2-1, and Hp 2-2. Haptoglobin is composed of heavy β- (40 kDa) and light α- (α1= 8.9kDa and α2= 16kDa) chains. Hp 1-1 is the smallest phenotype with a molecular weight of 86kDa, and is composed of only α1.
Biochem/physiol Actions
Haptoglobin functions as an antioxidant by binding free hemoglobin, and eliminates it from circulation to prevent iron loss and renal injury following hemolysis. It is responsible for maintaining the helper T-cell type 1 and type 2 (Th1/Th2) balance, and functions as an immunosuppressor of lymphocyte function. It also functions as an angiogen and anti-inflammatory agent. Hp 1-1 phenotype is most effective in binding free hemoglobin and preventing inflammatory responses linked with free hemoglobin. Studies show that all the three phenotypes of haptoglobin are involved in idiopathic generalized epilepsy.
Physical form
Lyophilized as a salt-free solid.
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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Haptoglobin phenotypes in epilepsy.
Clinical Chemistry, 50(6), 1095-1097 (2004)
Haptoglobin phenotypes in health and disorders.
American Journal of Clinical Pathology, 121, S97-104 (2004)
Determination of haptoglobin genotype in an Iranian population with idiopathic generalized epilepsy.
Reports of Biochemistry and Molecular Biology, 3(2), 51-55 (2015)
International journal of molecular sciences, 23(21) (2022-11-12)
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