Recombinant Human Nectin 3 Protein (His Tag)

Name: Recombinant Human Nectin 3 Protein (His Tag)
Brand: Beta LifeScience
SKU: BLPSN-3449
Availability: InStock

Collections: Co-inhibitory receptors, Other recombinant proteins, Recombinant proteins

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Product Overview

Tag	His
Host Species	Human
Accession	NP_056295.1
Synonym	CD113, CDw113, DKFZp566B0846, FLJ90624, nectin-3, PPR3, PRR3, PVRL3, PVRR3
Background	Poliovirus receptor-related 3 (PVRL3), also known as Nectin-3 and CD113, is a member of the nectin family. PVRL3/Nectin-3 is an 83 kDa, type I transmembrane glycoprotein. Its precursor is 549 amino acids (aa) in length and contains an extended signal sequence of 57 aa, an extracellular domain (ECD) of 347 aa, a transmembrane segment of 21 aa, and a cytoplasmic region of 124 aa. Nectin-3 has three splicing variants, nectin-3alpha (biggest), -3beta (middle), and -3gamma (smallest). It is predominantly expressed in testis and placenta as well as in various cell lines, including epithelial cell lines. PVRL3/Nectin-3 plays a role in cell-cell adhesion through heterophilic trans-interactions with nectin-like proteins or nectins, such as trans-interaction with PVRL2/Nectin-2 at Sertoli-spermatid junctions. PVRL3/Nectin-3 is thus involved in the formation of cell-cell junctions, including adherens junctions and synapses. It has been shown to induce endocytosis-mediated down-regulation of PVR from the cell surface, resulting in reduction of cell movement and proliferation.
Description	A DNA sequence encoding the extracellular domain of human PVRL3 (NP_056295.1) (Met 1-Asp 400) was expressed, with a His tag at the C-terminus.
Source	HEK293
Predicted N Terminal	Gly 58
AA Sequence	Met 1-Asp 400
Molecular Weight	The secreted recombinant human PVRL3 comprises 354 a.a. and has a predicted molecular mass of 39.3 kDa. As a result of glycosylation, rhPVRL3 migrates as an approximately 65-75 kDa band in SDS-PAGE under reducing conditions.
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 binding ability in a functional ELISA.1. Immobilized recombinant human PVRL3 at 1 ug/ml (100 ul/well) can bind biotinylated Nectin-1 with a linear range of 6.4-800 ng/ml.2. Immobilized recombinant human PVRL3 at 1 ug/ml (100 ul/well) can bind Nectin-1/ Fc chimera with a linear range of 0.156-5 ng/ml.
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.