Native Human Alpha 1 Antichymotrypsin

Name: Native Human Alpha 1 Antichymotrypsin
Brand: Beta LifeScience
SKU: BAR-0059P
Price: 351.0 USD
Availability: InStock

Collections: All products, Christmas & new year research sale — 30% off storewide, Native proteins

Price

Size

100ug

Quantity

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

Description	Native Human Alpha-1-Antichymotrypsin (AACT) serves as a key acute-phase serine protease inhibitor that specifically targets chymotrypsin-like enzymes, most notably cathepsin G and mast cell chymase, thereby modulating inflammatory responses and tissue remodeling processes. This glycoprotein, synthesized primarily in the liver, operates through a characteristic serpin mechanism where its reactive center loop acts as a pseudosubstrate for target proteases, leading to covalent complex formation and irreversible enzyme inhibition while undergoing a dramatic conformational transition. Through this regulatory function, AACT not only controls neutrophil-mediated proteolysis during inflammation but also demonstrates significant involvement in Alzheimer's disease pathology through its co-localization with amyloid-beta plaques in brain tissues, where it may influence amyloid fibril formation, with its plasma concentrations rising markedly during acute-phase responses while genetic deficiencies correlate with chronic liver disease progression and abnormal tissue repair.
Source	Human Plasma
Form	Lyophilized Powder
Buffer	Lyophilized from 20 mM Tris, pH 7.4, with 150 mM NaCl
Purity	Greater than 95% as determined by SDS-PAGE.
Molecular Weight	64kDa
Protein Determination	Extinction Coefficient (E) = 0.60 (0.1% at 280 nm, 1 cm pathway)
Storage/Handling	≤ -20 °C

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.