Recombinant Human CLEC14A Fc Chimera Protein, CF

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R&D Systems Recombinant Proteins and Enzymes
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Recombinant Human CLEC14A Fc Chimera Protein, CF Summary

Product Specifications

>95%, 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 its binding ability in a functional ELISA. When Recombinant Human CLEC14A Fc Chimera is coated at 1 µg/mL, 100 μL/well, Recombinant Human VEGF R3/Flt‑4 Fc Chimera (Catalog # 349-F4) binds with an ED50 of 0.8-4.8 μg/mL.
Human embryonic kidney cell, HEK293-derived human CLEC14A protein
Human CLEC14A
Accession # Q86T13
N-terminus C-terminus
Accession #
N-terminal Sequence
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
66 kDa
94-108 kDa, reducing conditions

Product Datasheets

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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 500 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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Reconstitution Calculator

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Background: CLEC14A

C-type lectin domain family 14 member A (CLEC14A), also known as epidermal growth factor receptor 5 (EGFR-5), is an approximately 52-kDa member of the C-type lectin domain family that plays a role in angiogenic functions including cell-cell adhesion, endothelial cell migration, and tube formation (1, 2). This tumor endothelial marker is a type I transmembrane protein whose extracellular domain (ECD) domain consists of a 141 amino acid (aa) C-type lectin domain, a 43 aa EGF-like domain, and a sushi-like domain (3). Within the ECD, human CLEC14A shares 67% and 68% sequence identity with mouse and rat CLEC14A, respectively.In endothelial cells, CLEC14A forms a complex with VEGFR-3. Failure in the formation of this complex has been observed to result in the enhanced expression and activity of VEGFR-2 and the downstream signaling (4). By its interaction with VEGFR-3, CLECA4 appears to regulate developmental angiogenesis, lymphangiogenesis, and pathological angiogensis (4). CLEC14A acts in vascular homeostasis by fine-tuning VEGF R2 and VEGF R3 signaling in ECs, suggesting its relevance in the pathogenesis of angiogenesis-related human disorders (4).

  1. Jang, J. et al. (2017) Sci. Rep. 7:10666.
  2. Mura, M. et al. (2012) Oncogene. 31:293.
  3. Zelensky, A. and Gready, J. (2005) FEBS. J. 272:6179.
  4. Lee, S. et al. (2017) J. Clin. Invest. 127:457.
Long Name
C-type Lectin Domain Family 14, Member A
Entrez Gene IDs
161198 (Human); 66864 (Mouse); 314148 (Rat)
Alternate Names
C14orf27; CEG1; chromosome 14 open reading frame 27; CLEC14A; ClECT and EGF-like domain containing protein; C-type lectin domain family 14 member A; C-type lectin domain family 14, member A; EGF R5; EGFR5; EGFR-5; Epidermal growth factor receptor 5


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