HP recombinant protein

Recombinant HP

Cat. Num. AAA201089

• Gene Names: HP; BP; HPA1S; HP2ALPHA2
• Applications: SDS-Page
• Purity: >90% by SDS-PAGE
• Synonyms: HP; Recombinant HP; Haptoglobin isoform 2; BP; HP2ALPHA2; HPA1S; HP recombinant protein

• Host: Baculovirus
• Purity/Purification: >90% by SDS-PAGE
• Form/Format: Liquid; In Phosphate Buffered Saline (pH 7.4) Containing 10% Glycerol.
• Concentration: 0.25mg/ml (determined by BCA assay) (varies by lot)
• Sequence Positions: 19-347aa
• Sequence: ADLVDSGNDV TDIADDGCPK PPEIAHGYVE HSVRYQCKNY YKLRTEGDGV YTLNNEKQWI NKAVGDKLPE CEAVCGKPKN PANPVQRILG GHLDAKGSFP WQAKMVSHHN LTTGATLINE QWLLTTAKNL FLNHSENATA KDIAPTLTLY VGKKQLVEIE KVVLHPNYSQ VDIGLIKLKQ KVSVNERVMP ICLPSKDYAE VGRVGYVSGW GRNANFKFTD HLKYVMLPVA DQDQCIRHYE GSTVPEKKTP KSPVGVQPIL NEHTFCAGMS KYQEDTCYGD AGSAFAVHDL EEDTWYATGI LSFDKSCAVA EYGVYVKVTS IQDWVQKTIA ENHHHHHH
• Sequence Length: 406

• Applicable Applications for HP recombinant protein: SDS-PAGE (SDS)
• Endotoxin: <1.0 EU per 1ug of protein (determined by LAL method)
• Tag Information: His-Tag
• Preparation and Storage: Can be stored at 2 degree C to 8 degree C for 1 week. For long term storage, aliquot and store at -20 degree C to -80 degree C. Avoid repeated freezing and thawing cycles.

SDS-Page

(3ug by SDS-PAGE under reducing condition and visualized by coomassie blue stain )

Related Product Information for HP recombinant protein

HP, also known as haptoglobin isoform 2, is consists of two alpha and two beta chains, connected by disulfide bridges in its simplest form. The chains originate from a common precursor protein, which is proteolytically cleaved during protein synthesis. In blood plasma, this protein binds free hemoglobin released from erythrocytes with high affinity and thereby inhibits its oxidative activity. The haptoglobin-hemoglobin complex will then be removed by the reticuloendothelial system (mostly the spleen). It 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. For this reason, it is often referred to as the suicide protein. Recombinant human HP, fused to His-tag at C-terminus, was expressed in insect cell and purified by using conventional chromatography techniques.

Product Categories/Family for HP recombinant protein

Cardiovascular

References

Kurosky,A., et al, (1980) Proc. Natl. Acad. Sci. U.S.A. 77:3388-3392. Ofon E., et al, (2017) PLoS Negl Trop Dis 11:e0005979.

NCBI and Uniprot Product Information

• NCBI GI #: 386783
• NCBI GeneID: 3240
• UniProt Accession #: P00738
• Molecular Weight: 37.7kDa (338aa)
• NCBI Official Full Name: haptoglobin
• NCBI Official Synonym Full Names: haptoglobin
• NCBI Official Symbol: HP
• NCBI Official Synonym Symbols: BP; HPA1S; HP2ALPHA2
• NCBI Protein Information: haptoglobin
• UniProt Protein Name: Haptoglobin
• Protein Family: HPr-like protein
• UniProt Gene Name: HP
• UniProt Entry Name: HPT_HUMAN

NCBI Description

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. The protein encoded also exhibits antimicrobial activity against bacteria. 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, Oct 2014]

Uniprot Description

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; Secreted, signal peptide

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; defense response to bacterium; negative regulation of oxidoreductase activity; acute-phase response; defense response

Disease: Anhaptoglobinemia