Recombinant Human MDL-1/CLEC5A Protein, CF Summary
Tyr26-Lys188, with an N-terminal 9-His tag
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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.
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 100 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.
MDL-1 (Myeloid DAP12-associating lectin 1), also known as CLEC5A, is an approximately 40 kDa member of the C-type lectin family (1). Mature human MDL-1 is a glycosylated type 2 transmembrane protein that associates into a homodimer on the cell surface (2). It consists of a 161 amino acid (aa) extracellular domain (ECD) with one C-type lectin (CTL) domain and a juxtamembrane stalk region, a 23 aa transmembrane segment, and a 5 aa cytoplasmic domain (3). Within the ECD, human MDL-1 shares 67% and 69% aa sequence identity with mouse and rat MDL-1, respectively. The transmembrane segment contains a lysine residue that mediates interactions with the signaling protein DAP12 (3). MDL-1 is expressed on monocytes, macrophages, and neutrophils (3, 4). Its expression is up-regulated on monocytes in rheumatoid arthritis (5). MDL-1 functions as a cell attachment receptor for all four serotypes of Denguevirus as well as Japanese encephalitis virus, although the short isoform binds significantly more weakly (2, 6, 7). These interactions trigger DAP12 phosphorylation, the production of multiple inflammatory cytokines, vascular leakage, and disruption of the blood-brain barrier (6-8).
- Hoving, J.C. et al. (2014) Cell. Microbiol. 16:185.
- Watson, A.A. et al. (2011) J. Biol. Chem. 286:24208.
- Bakker, A.B.H. et al. (1999) Proc. Natl. Acad. Sci. USA 96:9792.
- Aoki, N. et al. (2009) J. Leukoc. Biol. 85:508.
- Chen, D.-Y. et al. (2014) PLoS ONE 9:e86105.
- Chen, S.-T. et al. (2012) PLoS Pathogens 8:e1002655.
- Chen, S.-T. et al. (2008) Nature 453:672.
- Wu, M.-F. et al. (2013) Blood 121:95.
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