Recombinant Human Chymotrypsin-like protease / CTRL1 Protein (His Tag)

Name: Recombinant Human Chymotrypsin-like protease / CTRL1 Protein (His Tag)
Brand: Beta LifeScience
SKU: BLPSN-1268
Availability: InStock

Collections: Other recombinant proteins, Recombinant proteins

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Product Overview

Tag	His
Host Species	Human
Accession	P40313
Synonym	CTRL1
Background	CTRL-1, also known as chymotrypsin-like protease, belongs to thepeptidase S1 family. CTRL-1 contains 1peptidase S1 domain. Its expression is increased in preeclampsia (PE). Placental-derived chymotrypsin-like protease is responsible for inducing endothelial inflammatory phenotypic changes possibly by upregulation of cell adhesion molecule expressions, activation of cellular protease, and induction of extracellular regulated kinase phosphorylation. Activated microglia have been observed in various neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), amyotrophic lateral sclerosis, and multiple sclerosis. Five structurally distinct inhibitors that are known to inhibit chymotrypsin-like proteases were partially protective. They might represent a novel class of drugs with benefit in diseases where overactivity of microglia contributes to the pathogenesis.
Description	A DNA sequence encoding the human CTRL (P40313) (Met1-Asn264) was expressed with a His tag at the C-terminus.
Source	HEK293
Predicted N Terminal	Cys 19
AA Sequence	Met1-Asn264
Molecular Weight	The recombinant human CTRL consists of 257 a.a. and predicts a molecular mass of 27.6 KDa. It migrates as an approximately 35 and 32KDa band in SDS-PAGE under reducing conditions.
Purity	(36.0+62.4)% as determined by SDS-PAGE
Endotoxin	< 1.0 EU per μg of the protein as determined by the LAL method
Bioactivity	Please contact us for detailed information
Formulation	Lyophilized from sterile PBS, pH 7.4..
Stability	The recombinant proteins are stable for up to 1 year from date of receipt at -70°C.
Usage	For Research Use Only
Storage	Store the protein under sterile conditions at -20°C to -80°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.

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.