Recombinant Human HPR Protein

Beta LifeScience SKU/CAT #: BL-3259PS

Recombinant Human HPR Protein

Beta LifeScience SKU/CAT #: BL-3259PS
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.

Submit an inquiry today to inquire about all available size options and prices! Connect with us via the live chat in the bottom corner to receive immediate assistance.

Product Overview

Tag N/A
Host Species Human
Synonym Haptoglobin-Related Protein, A-259H10.2, Haptoglobin-RelatedLocus, HP.
Background Haptoglobin-RelatedProtein also known as HPR, is a primate-specific plasma protein related withapolipoprotein L-I (apoL-I)-containing high-density lipoprotein (HDL) particleswhich shown to be a part of the innate immune defense. HPR-bound hemoglobin mightcontribute to the biologic activity of the circulating apoL-I/Hprcontaining HDLparticles. HPR is a clinically significant forecaster of recurrence of breastcancer.
Description HPR Human Recombinant expressed in E.Coli is a single,non-glycosylated polypeptide chain containing 352a.a. (20-348 a.a) andhaving a molecular weight of 39.3kDa.HPR is fused to a 23a.a. His-tag at N-terminusand purified by unique purification methods.
Source E.coli
AA Sequence MGSSHHHHHH SSGLVPRGSH MGSLYSGNDV TDISDDRFPK PPEIANGYVE HLFRYQCKNY YRLRTEGDGVYTLNDKKQWI NKAVGDKLPE CEAVCGKPKN PANPVQRILG GHLDAKGSFP WQAKMVSHHN LTTGATLINEQWLLTTAKNL FLNHSENATA KDIAPTLTLY VGKKQLVEIE KVVLHPNYHQ VDIGLIKLKQ KVLVNERVMPICLPSKNYAE VGRVGYVSGW GQSDNFKLTD HLKYVMLPVA DQYDCITHYE GSTCPKWKAP KSPVGVQPILNEHTFCVGMS KYQEDTCYGD AGSAFAVHDL EEDTWYAAGI LSFDKSCAVA EYGVYVKVTS IQHWVQKTIA EN
Purity Greaterthan 85% as determined by SDS-PAGE.
Endotoxin <1.0 EU per μg by the LAL method.
Formulation HPR protein solution (0.5mg/ml) containing 20mM Tris-HCl buffer (pH8.5), 20% glycerol 1mM DTT and 0.15M NaCl.
Stability Recombinant protein is stable for 12 months at -70°C
Usage For Research Use Only
Storage Store at 4°C if entire vial will be used within 2-4 weeks. Store, frozen at -20°C for longer periods of time.For long term storage it is recommended to add a carrier protein (0.1% HSA or BSA).Please avoid freeze thaw cycles.

FAQs

Please fill out the Online Inquiry form located on the product page. Key product information has been pre-populated. You may also email your questions and inquiry requests to sales1@betalifesci.com. We will do our best to get back to you within 4 business hours.

Feel free to use the Chat function to initiate a live chat. Our customer representative can provide you with a quote immediately.

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.

Recently viewed