Recombinant Human S100P Protein

Beta LifeScience SKU/CAT #: BLPSN-4142

Recombinant Human S100P Protein

Beta LifeScience SKU/CAT #: BLPSN-4142
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Product Overview

Tag N/A
Host Species Human
Accession P25815
Synonym MIG9
Background Protein S1-P, also known as Protein S1-E, S1 calcium-binding protein P, S1P and S1E, is a nucleus and cytoplasm protein which belongs to theS-1 family. S1P / S1E contains twoEF-hand domains. S1P protein regulates calcium signal transduction and mediates cytoskeletal interaction, protein phosphorylation and transcriptional control. S1P / S1E overexpression can upregulate androgen receptor expression and thereby promote prostate cancer progression by increasing cell growth. S1P / S1E may directly confer resistance to chemotherapy. S1P / S1E induction may be considered an important step in the initial stage of lung adenocarcinomas, whereas its downregulation in advanced stages seems to be important for tumour progression in which DNA methylation and/or feedback transcription processes play a critical role. S1P / S1E plays a major role in the aggressiveness of pancreatic cancer that is likely mediated by its ability to activate RAGE. Interference with S1P / S1E may provide a novel approach for treatment of pancreatic cancer. S1P / S1E could be considered a potential drug target or a chemosensitization target, and could also serve as a biomarker for aggressive, hormone-refractory and metastatic prostate cancer.
Description A DNA sequence encoding the mature form of human S100P (P25815) (Met 1-Lys 95) was expressed and purified.
Source E.coli
Predicted N Terminal Met 1
AA Sequence Met 1-Lys 95
Molecular Weight The recombinant human S100P consisting of 95 a.a. and has a calculated molecular mass of 10.4 kDa.
Purity >97% as determined by SDS-PAGE
Endotoxin Please contact us for more information.
Bioactivity Please contact us for detailed information
Formulation Lyophilized from sterile PBS, pH 7.5.
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.


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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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