Recombinant Cynomolgus FCGRT & B2M Heterodimer Protein (His Tag)

Name: Recombinant Cynomolgus FCGRT & B2M Heterodimer Protein (His Tag)
Brand: Beta LifeScience
SKU: BLPSN-2005
Availability: InStock

Collections: Fc receptors, Featured fc receptors molecules, Recombinant proteins

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Product Overview

Tag	His
Host Species	Cynomolgus
Accession	Q8SPV9
Description	A DNA sequence encoding the extracellular domain (Met 1-Ser 297) of Cynomolgus FCGRT (Q8SPV9) was fused with a His tag at the C-terminus, constructed the plasmid 1; A DNA sequence encoding the Cynomolgus B2M (Q6V7J5) (Met 1-Met 119) constructed the plasmid 2. The two plasmids were co-expressed and the FCGRT/B2M heterodimer was purified.
Source	HEK293
Predicted N Terminal	Ala 24 & Ile 21
AA Sequence	Met 1-Met 119
Molecular Weight	The recombinant heterodimer of Cynomolgus FCGRT&B2M comprises 384 (285+99) a.a. and has a calculated molecular mass of 43.5 (31.9+ 11.6) KDa. The apparent molecular mass of Cynomolgus FCGRT&B2M heterodimer is approximately 35 & 12 KDa respectively in SDS-PAGE
Purity	>98% as determined by SDS-PAGE
Endotoxin	< 1.0 EU per μg of the protein as determined by the LAL method
Bioactivity	Measured by its ability to bind human IgG1 in functional ELISA.
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.

Target Details

Target Function	Cell surface receptor that transfers passive humoral immunity from the mother to the newborn. Binds to the Fc region of monomeric immunoglobulin gamma and mediates its selective uptake from milk. IgG in the milk is bound at the apical surface of the intestinal epithelium. The resultant FcRn-IgG complexes are transcytosed across the intestinal epithelium and IgG is released from FcRn into blood or tissue fluids. Throughout life, contributes to effective humoral immunity by recycling IgG and extending its half-life in the circulation. Mechanistically, monomeric IgG binding to FcRn in acidic endosomes of endothelial and hematopoietic cells recycles IgG to the cell surface where it is released into the circulation. In addition of IgG, regulates homeostasis of the other most abundant circulating protein albumin/ALB.
Subcellular Location	Cell membrane; Single-pass type I membrane protein. Endosome membrane.
Protein Families	Immunoglobulin superfamily
Database References	KEGG: mcf:102128913 UniGene: Mfa.8387

Gene Functions References

None of the non-synonymous variants of FCGRT or B2M found changes in the amino acid residues known to be important for FcRn function, suggesting that substantial inter-animal variability of FcRn is not expected for the cynomolgus macaques analyzed PMID: 24806819
Characterization and screening of IgG binding to the neonatal Fc receptor. PMID: 24802048

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.