Recombinant Mouse RP105 Protein (Fc Tag)

Beta LifeScience SKU/CAT #: BLPSN-4085

Recombinant Mouse RP105 Protein (Fc Tag)

Beta LifeScience SKU/CAT #: BLPSN-4085
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Product Overview

Tag Fc
Host Species Mouse
Accession NP_032559.2
Synonym F630107B15, Ly78, RP105
Background The cluster of differentiation (CD) system is commonly used as cell markers in immunophynotyping. Different kinds of cells in the immune system can be identified through the surface CD molecules which associating with the immune function of the cell. There are more than 32 CD unique clusters and subclusters have been identified. Some of the CD molecules serve as receptors or ligands important to the cell through initiating a signal cascade which then alter the behavior of the cell. Some CD proteins do not take part in cell signal process but have other functions such as cell adhesion. CD18, also known as RP15, is a B-cell surface molecule belonging to the family of pathogen receptors, Toll-like receptors (TLR). CD18 has an extracellular leucine-rich repeats and a short cytoplasmic tail. CD18 / RP15 interact with an extracellular molecule named MD1 and then together form the cell surface receptor complex RP15 / MD1 which induces B-cell activation in humans and mice, leading to proliferation and up-regulation of a costimulatory molecule, B7.2 / CD86. CD18 / RP15 also has a role in LPS response because B cells lacking RP15 show hyporesponsiveness to LPS.
Description A DNA sequence encoding the mouse CD180 (NP_032559.2) extracellular domain (Met 1-Ser 626) was fused with the Fc region of human IgG1 at the C-terminus.
Source HEK293
Predicted N Terminal Thr 21
AA Sequence Met 1-Ser 626
Molecular Weight The recombinant mouse CD180/Fc chimera is a disulfide-linked homodimeric protein. The reduced monomer consists of 847 a.a. and predicts a molecular mass of 95 kDa. As a result of glycosylation, the apparent molecular mass of rm CD180/Fc monomer is approximately 110 kDa in SDS-PAGE under reducing conditions.
Purity >90% 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.

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