Recombinant Human STUB1 (CHIP) Protein

Name: Recombinant Human STUB1 (CHIP) Protein
Brand: Beta LifeScience
SKU: BL-1391SG
Availability: InStock

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

Tag	His
Host Species	Human
Accession	NM_005861
Synonym	CHIP; UBOX1; HSPABP2; NY-CO-7; SDCCAG7
Background	CHIP(STUB1) or STIP1 homology and U-box containing protein 1 (also known as E3 ubiquitin protein ligase) is a ubiquitin ligase/cochaperone that participates in protein quality control by targeting a broad range of chaperone protein substrates for degradation (1). CHIP acts as a molecular switch for the degradation of misfolded proteins via the proteasome and lysosome pathways (2). CHIP controls the cellular level of BER enzymes and, correspondingly, the efficiency and capacity of BER. CHIP E3 ubiquitin ligases act sequentially in ER membrane and cytosol to monitor the folding status of CFTR and delF508.CHIP possesses intrinsic E3 ubiquitin ligase activity and promotes ubiquitylation.
Description	Recombinant full length human STUB1 (CHIP) was produced in E. coli system, fused with a His tag at N-terminus.
Source	E.coli
AA Sequence	Full Length
Molecular Weight	~37 kDa
Purity	For specific purity information on a given lot, see related COA.
Endotoxin	< 1.0 EU per μg of the protein as determined by the LAL method
Formulation	Recombinant protein is supplied in 50mM Tris-HCl, pH 7.5, 50mM NaCl, 10mM Glutathione, 0.25mM DTT, 0.1mM EDTA, 0.1mM PMSF and 25% glycerol.
Stability	The recombinant protein is stable for up to 12 months at -70°C
Usage	For Research Use Only
Storage	Recombinant Human STUB1 (CHIP) Protein should be stored should be stored at < -70°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated 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.

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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.