Recombinant Rat Haptoglobin (HP) Protein (His)

Name: Recombinant Rat Haptoglobin (HP) Protein (His)
Brand: Beta LifeScience
SKU: BLC-03538P
Availability: InStock

Greater than 90% as determined by SDS-PAGE.

Our products are highly customizable to meet your specific needs. You can choose options such as endotoxin removal, liquid or lyophilized forms, preferred tags, and the desired functional sequence range for proteins. Submitting a written inquiry expedites the quoting process.

Product Overview

Description	Recombinant Rat Haptoglobin (HP) Protein (His) is produced by our E.coli expression system. This is a protein fragment.
Purity	Greater than 90% as determined by SDS-PAGE.
Uniprotkb	P06866
Target Symbol	HP
Synonyms	Hp; Ba1-647; Haptoglobin; Liver regeneration-related protein LRRG173) [Cleaved into: Haptoglobin alpha chain; Haptoglobin beta chain]
Species	Rattus norvegicus (Rat)
Expression System	E.coli
Tag	N-6His
Target Protein Sequence	VELGNDATDIEDDSCPKPPEIANGYVEHLVRYRCRQFYKLQTEGDGIYTLNSEKQWVNPAAGDKLPKCEAVCGKPKHPVDQVQRIIGGSMDAKGSFPWQAKMISRHGLTTGATLISDQWLLTTAQNLFLNHSENATAKDIAPTLTLYVGKNQLVEIEKVVLHPERSVVDIGLIKLKQKVLVTEKVMPICLPSKDYVAPGRMGYVSGWGRNVNFRFTERLKYVMLPVADQEKCELHYEKSTVPEKKGAVSPVGVQPILNKHTFCAGLTKYEEDTCYGDAGSAFAVHDTEEDTWYAAGILSFDKSCAVAEYGVYVRATDLKDWVQETMAK
Expression Range	19-346aa
Protein Length	Partial
Mol. Weight	40.5kDa
Research Area	Epigenetics And Nuclear Signaling
Form	Liquid or Lyophilized powder
Buffer	Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	As 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 antioxidant, has antibacterial activity and plays a role in modulating many aspects of the acute phase response. Hemoglobin/haptoglobin complexes are rapidly cleared by the macrophage CD163 scavenger receptor expressed on the surface of liver Kupfer cells through an endocytic lysosomal degradation pathway.
Subcellular Location	Secreted.
Protein Families	Peptidase S1 family
Database References	KEGG: rno:24464 UniGene: Rn.10950
Tissue Specificity	Expressed by the liver and secreted in plasma.

Gene Functions References

This study demonistrated that increased Hp in serum came from the liver in response to TBI and that IL-6 is an important mediator of this induction. PMID: 23172820
Vaccenic acid normalizes serum haptoglobin in obese/insulin resistant JCR:LA-cp rats PMID: 22254015
activated glucocorticoid receptor through direct interactions with STAT3 and C/EBPbeta, participates in Hp gene upregulation as a transcriptional coactivator. PMID: 20155810
Haptoglobin deficiency worsens intracerebral hemorrhage whereas haptoglobin overexpression alleviates intracerebral hemorrhage-mediated brain injury. PMID: 20016097
Hp-mediated haemoglobin catabolism in lung cells may be an efficient mechanism to reduce oxidative damage associated with haemolysis PMID: 11865979
Haptoglobin gene expression regulation PMID: 11865981
Hp is transcriptionally modulated throughout prenatal hepatic development by fetal p53 protein. PMID: 11991649
upregulated in reactive astrocytes after transient forebrain ischemia in rats PMID: 12368655
Hp gene transcription is regulated by C/EBP alpha during normal liver development, whereas C/EBP beta is involved in the acute-phase response regulation during the later phase of differentiation and in the adult. PMID: 16172914
Western blotting and enzyme-linked immunosorbent assay clearly showed a markedly increased level of Hp in the urine, but not in the serum, of the PHN animals. PMID: 17616219
that interactions between C/EBPs and HDAC1 negatively regulate C/EBPdelta-dependent haptoglobin expression in intestinal epithelial cells. PMID: 17910034
lamin components of the nuclear matrix form a network of functional, dynamic protein-protein and protein-Hp-S/MAR associations with multiple partners, and underline the involvement of PARP-1 in the regulation of haptoglobin gene transcription. PMID: 19521970
Data concluded that haptoglobin gene up-regulation during chronic dietary restriction was regulated by different mechanisms than during the acute phase response. PMID: 19545490

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.