Recombinant Human Nectin-4 Protein, CF

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Recombinant Human Nectin-4 Protein, CF Summary

Product Specifications

>90%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Measured by the ability of the immobilized protein to support the adhesion of NIH‑3T3 mouse embryonic fibroblast cells. When 5 x 104 cells/well are added to recombinant human Nectin-4 coated plates (10 µg/mL with 100 µL/well), approximately >45% will adhere after 1 hour incubation at 37 °C.
Optimal dilutions should be determined by each laboratory for each application.
Mouse myeloma cell line, NS0-derived human Nectin-4 protein
Gly27-Val351, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Structure / Form
Predicted Molecular Mass
35.6 kDa
44 kDa, reducing conditions

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Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.


Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 200 μg/mL in PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
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Background: Nectin-4

Nectin-4 (gene name PVRL4, poliovirus receptor-like 4) is a 66 kDa type I transmembrane glycoprotein belonging to the Nectin family of Ig superfamily proteins (1). The Latin word necto means “to connect”, indicating the role of nectins in Ca2+‑independent cell-cell adhesion (2). Nectin-4 forms homodimers in cis, followed by interactions in trans with Nectin-1 or -4 (1-3). Human Nectin-4 mRNA is normally expressed in the placenta, especially in endothelial cells, while in the mouse it is found in the embryo, lung, testis and brain (1, 4, 5). Human Nectin-4 cDNA encodes 510 amino acids (aa), including a 31 aa signal sequence, a 318 aa extracellular domain (ECD), a 21 aa transmembrane segment (TM), and a 140 aa cytoplasmic region. Nectin ECDs contain three Ig-like domains: an N‑terminal V-type that mediates ligand binding, and two C2-type (1, 3). One Nectin‑4 isoform lacks aa 412-436 in the cytoplasmic domain (1). In many human ductal breast or non-small cell lung carcinomas, Nectin‑4 is upregulated and a soluble 43 kDa form is found in the plasma (4-6). This form is generated from the membrane protein via the action of TACE/ADAM-17 (6). The extracellular domain of human Nectin-4 shares 91%, 92%, 93%, 91% and 90% amino acid sequence homology with the corresponding regions of mouse, rat, canine, porcine and bovine Nectin-4, respectively. In forming adherens junctions, trans interactions of Nectin-4 initiate cell-cell interactions and recruit intracellular cadherins through afadin and other junctional proteins (1, 2). These interactions organize the actin cytoskeleton, strengthen attachment to basement membrane and promote further cell-cell connections (2, 7). In humans, mutation of Nectin-4 has been correlated with ectodermal dysplasia-syndactyly syndrome, indicating a role for Nectin-4 in human development (7).

  1. Reymond, N. et al. (2001) J. Biol. Chem. 276:43205.
  2. Takai, Y. et al. (2008) Nat. Rev. Mol. Cell Biol. 9:603.
  3. Fabre, S. et al. (2002) J. Biol. Chem. 277:27006.
  4. Fabre-Lafay, S. et al. (2007) BMC Cancer 7:73.
  5. Takano, A. et al. (2009) Cancer Res. 69:6694.
  6. Fabre-Lafay, S. et al. (2005) J. Biol. Chem. 280:19543.
  7. Brancati, F. et al. (2010) Am. J. Hum. Genet. 87:265.
Long Name
Poliovirus Receptor Related 4
Entrez Gene IDs
81607 (Human); 71740 (Mouse); 498281 (Rat); 102127936 (Cynomolgus Monkey)
Alternate Names
EDSS1; Ig superfamily receptor LNIR; LNIR; LNIRnectin 4; Nectin4; Nectin-4; poliovirus receptor-related 4; poliovirus receptor-related protein 4; PRR4; PRR4DKFZp686K05193; PVRL4


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Recombinant Human Nectin-4 Protein, CF
By Jenna Nguyen on 06/17/2019
Application: Cell Adhesion