catalog number :
MBS135642
products full name :
Haptoglobin, Human Plasma
products short name :
Haptoglobin, Human Plasma
other names :
haptoglobin isoform 2 preproprotein; Haptoglobin; haptoglobin; zonulin; binding peptide; haptoglobin alpha(1S)-beta; haptoglobin alpha(2FS)-beta; haptoglobin, beta polypeptide; haptoglobin, alpha polypeptide; haptoglobin; Zonulin
other gene names :
HP; HP; BP; HPA1S; HP2ALPHA2
uniprot entry name :
HPT_HUMAN
purity :
>95% by SDS-PAGE analysis
form :
Lyophilized powder
concentration :
Lyophilized
storage stability :
Store at -70 degree C. Shelf Life: 3 years from delivery. Shipping: Ships with cold packs
other info2 :
Buffer: Salt free. Extinction Coefficient: 1.2
products categories :
Plasma Proteins; Human Plasma Proteins
products description :
An acute-phase plasma protein found in human plasma at 100-300 mg per 100 ml. Binds hemoglobin, thus preventing loss of iron through the kidneys. Humans are polymorphic for haptoglobin, with three major phenotypes. Hp 1-1 is the most common, and the most effective in binding free hemoglobin. Hp 2-2 is the least effective. This functional difference may be associated with the frequency and severity of epilepsy attacks, as researchers have found a correlation between recurring seizures and the Hp 2-2 phenotype. Prepared from plasma shown to be non reactive for HbsAG, anti-HCY, anti-HBc, and negative for anti-HIY I & 2 by FDA approved tests >95 percent pure by SDS-PAGE. Add deionized water to original volume, aliquot and freeze unused portion. Molecular Weights by phenotype - Hp 1- 86,000: Hp 2-1: 200.000: Hp 2-2: 400,000.
ncbi acc num :
NP_001119574.1
ncbi gb acc num :
NM_001126102.1
ncbi mol weight :
Multiple
ncbi pathways :
Binding And Uptake Of Ligands By Scavenger Receptors Pathway (771599); Scavenging Of Heme From Plasma Pathway (771600); Amb2 Integrin Signaling Pathway (137945)
ncbi summary :
This gene encodes a preproprotein, which is processed to yield both alpha and beta chains, which subsequently combine as a tetramer to produce haptoglobin. Haptoglobin functions to bind free plasma hemoglobin, which allows degradative enzymes to gain access to the hemoglobin, while at the same time preventing loss of iron through the kidneys and protecting the kidneys from damage by hemoglobin. Mutations in this gene and/or its regulatory regions cause ahaptoglobinemia or hypohaptoglobinemia. This gene has also been linked to diabetic nephropathy, the incidence of coronary artery disease in type 1 diabetes, Crohn's disease, inflammatory disease behavior, primary sclerosing cholangitis, susceptibility to idiopathic Parkinson's disease, and a reduced incidence of Plasmodium falciparum malaria. A similar duplicated gene is located next to this gene on chromosome 16. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
uniprot summary :
HP: Haptoglobin combines with free plasma hemoglobin, preventing loss of iron through the kidneys and protecting the kidneys from damage by hemoglobin, while making the hemoglobin accessible to degradative enzymes. Defects in HP are the cause of anhaptoglobinemia (AHP). AHP is a condition characterized by the absence of the serum glycoprotein haptoglobin. Serum levels of haptoglobin vary among normal persons: levels are low in the neonatal period and in the elderly, differ by population, and can be influenced by environmental factors, such as infection. Secondary hypohaptoglobinemia can occur as a consequence of hemolysis, during which haptoglobin binds to free hemoglobin. Belongs to the peptidase S1 family. Protein type: Secreted, signal peptide; Secreted. Chromosomal Location of Human Ortholog: 16q22.2. Cellular Component: extracellular space; extracellular region. Molecular Function: antioxidant activity; protein binding; hemoglobin binding; catalytic activity. Biological Process: receptor-mediated endocytosis; response to hydrogen peroxide; immune system process; metabolic process; negative regulation of oxidoreductase activity; defense response to bacterium; acute-phase response; defense response. Disease: Anhaptoglobinemia