Recombinant Human Serum Albumin/HSA Protein, Animal-Free, Active, Low Endotoxin

Beta LifeScience SKU/CAT #: BEP-0026UL
Recombinant Human Serum Albumin/HSA Protein, Animal Component-Free (2 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 67 kDa and purity greater than 98%.
Recombinant Human Serum Albumin/HSA Protein, Animal Component-Free (2 ug/lane) on SDS-PAGE under reducing (R) conditions. The gel was stained using Coomassie® Blue showing a single band at 67 kDa and purity greater than 98%.

Recombinant Human Serum Albumin/HSA Protein, Animal-Free, Active, Low Endotoxin

Beta LifeScience SKU/CAT #: BEP-0026UL
/
Size

Submit an inquiry or email sales for a custom bulk quote. 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.

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Product Overview

Product Name Recombinant Human Serum Albumin/HSA Protein, Animal-Free
Target Symbol ALB
Alternative Names Albumin, HSA
Accession Number P02768-1
Expression System Expressed in E. coli using an animal component-free system, with no Fetal Bovine Serum (FBS).
Molecular Weight 66.5 kDa (monomer, predicted)
Sequence Asp25-Leu609
Purity >98% under reducing conditions by SDS-PAGE and quantitative densitometry by Coomassie® Blue staining.
Activity The carrier effect of Recombinant Human Serum Albumin/HSA was determined by enhancement of cell proliferation using TF-1 human cells. Stout, et al. (2022) Commun Biol 5:466. Cell proliferation in TF-1 human cells was induced in a dose-dependent manner by Recombinant Human IL-3 and demonstrated >25% enhancement in the presence of rHSA.
Formulation Lyophilized from sterile PBS with Trehalose, pH 7.4
Endotoxin Level <0.01 EU/1ug (<10 EU/mg) of the protein as determined by the LAL method.
Shipping Shipped at ambient temperature.
Stability & Storage 12 months from date of receipt at -20°C to -70°C, lyophilized powder. 3 months at -20°C to -70°C under sterile conditions after reconstitution. Avoid repeated freeze-thaw cycles.
Reconstitution Reconstitute at 1 mg/mL in sterile PBS.
Target Function Human serum albumin (HSA) is an approximately 66.5 kDa protein with diverse functions including maintenance of pH and osmotic balance in biochemical assays and culture systems, along with functioning as a carrier protein that binds and transports a wide range of small molecules, including fatty acids, hormones, bilirubin, and metal ions. Additionally, HSA functions as a stabilizer of proteins and enzymes with properties that limit denaturation, aggregation and proteolysis. Due to these functions, recombinant HSA restores many of the transport, protective, and buffering roles lost when serum is removed from chemically defined cell culture media.
Tissue Specificity Plasma
Cellular Localization Secreted protein

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.

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