Recombinant Human CLEC-2/CLEC1B Protein, CF

Catalog # Availability Size / Price Qty
1718-CL-050
R&D Systems Recombinant Proteins and Enzymes
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Recombinant Human CLEC-2/CLEC1B Protein, CF Summary

Product Specifications

Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its binding ability in a functional ELISA. Immobilized Recombinant Human Podoplanin Fc Chimera (Catalog # 3670-PL) can bind Recombinant Human CLEC-2/CLEC1B with an estimated Kd <4 nM.
Source
Mouse myeloma cell line, NS0-derived human CLEC-2/CLEC1B protein
Gln58-Pro229, with an N-terminal 10-His tag
Accession #
N-terminal Sequence
Analysis
His
Predicted Molecular Mass
21.8 kDa
SDS-PAGE
29-36 kDa, under reducing conditions

Product Datasheets

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1718-CL

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.

1718-CL

Formulation Lyophilized from a 0.2 μm filtered solution in PBS.
Reconstitution Reconstitute at 250 μg/mL in sterile 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: CLEC-2/CLEC1B

C-type lectin-like receptor 2 (CLEC-2) is a 32 kDa, type II transmembrane glycoprotein and member of the C-type lectin-like family of receptors (1-4). CLEC-2 consists of a 33 amino acid (aa) cytoplasmic domain, a 21 aa transmembrane region, and a 175 aa extracellular domain (SwissProt # Q9P126). The cytoplasmic domain contains multiple threonine and serine residues which are sites of potential phosphorylation, and a YXXL (Tyr-Xaa-Xaa-Leu) motif through which CLEC-2 does its signaling (2, 4-5). Ligand binding and cross-linking of CLEC-2 induces Src kinase-dependent tyrosine phosphorylation of the YXXL sequence, inducing activation of the tyrosine kinase Syk and initiation of a signaling pathway that culminates in activation of phospholipase C gamma 2 (2, 5). The extracellular domain contains three potential sites of N-linked glycosylation, and a single carbohydrate recognition domain (CRD) which shows conservation of six cysteine residues (1, 6). Unlike most other members of the C-type lectin-like family of receptors, CLEC-2's CRD lacks the amino acid residues that are crucial for Ca2+-dependent carbohydrate binding, making it a non-classical C-type lectin receptor (1, 6). A splicing variant at aa 22-55 produces two isoforms for CLEC-2. Isoform 1 is the longer protein, and in isoform 2, an alanine residue is substituted for aa 22-55. Human CLEC-2 shares 63% aa sequence identity with mouse CLEC-2. CLEC-2 is expressed preferentially in liver, and is also detected in myeloid cells (monocytes, dendritic cells, and granulocytes) (1), platelets, and megakaryocytes (4). CLEC-2 is the receptor for the platelet-aggregating snake venom protein rhodocytin (3 - 4) and the molecule podoplanin, a transmembrane sialoglycoprotein that, when bound to CLEC-2, is involved in platelet aggregation, tumor metastasis, and lymphatic vessel formation (2, 7). CLEC-2 has also been shown to enhance infectivity of HIV-1 by mediating HIV-1 attachment and transfer by CLEC-2 transfected cells and platelets (8).

References
  1. Colonna, M. et al. (2000) Eur. J. Immunol. 30:697.
  2. Christou, C.M. et al. (2008) Biochem. J. 411:133.
  3. Watson, A.A. et al. (2007) J. Biol. Chem. 282:3165.
  4. Suzuki-Inoue, K. et al. (2006) Blood 107:542.
  5. Fuller, G.L. et al. (2007) J. Biol. Chem. 282:12397.
  6. Weis, W.I. et al. (1998) Immunol. Rev. 163:19.
  7. Suzuki-Inoue, K. et al. (2007) J. Biol. Chem. 282:25993.
  8. Chaipan, C. et al. (2006) J. Virol. 80:8951.
Long Name
C-type Lectin-like Receptor 2
Entrez Gene IDs
51266 (Human); 56760 (Mouse)
Alternate Names
1810061I13Rik; CLEC1B; CLEC2; CLEC-2; CLEC2B; CLEC2PRO1384; C-type lectin domain family 1 member B; C-type lectin domain family 1, member B; C-type lectin-like receptor 2; C-type lectin-like receptor-2; QDED721

Citations for Recombinant Human CLEC-2/CLEC1B Protein, CF

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

3 Citations: Showing 1 - 3
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  1. Podoplanin regulates the migration of mesenchymal stromal cells and their interaction with platelets
    Authors: LSC Ward, L Sheriff, JL Marshall, JE Manning, A Brill, GB Nash, HM McGettrick
    J. Cell. Sci., 2019-02-25;0(0):.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  2. Origin-Specific Adhesive Interactions of Mesenchymal Stem Cells with Platelets Influence Their Behavior After Infusion
    Authors: L Sheriff, A Alanazi, LSC Ward, C Ward, H Munir, J Rayes, M Alassiri, SP Watson, PN Newsome, GE Rainger, N Kalia, J Frampton, HM McGettrick, GB Nash
    Stem Cells, 2018-03-23;0(0):.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  3. Inhibitory effects of polypeptides derived from a snake venom C-type lectin, aggretin, on tumor cell-induced platelet aggregation.
    Authors: Chang C, Chung C, Hsu C, Peng H, Huang T
    J Thromb Haemost, 2014-04-01;12(4):540-9.
    Applications: Bioassay

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