Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Level
<0.01 EU per 1 μg of the protein by the LAL method.
Activity
Measured by its ability to enhance LPS-induced IL-6 secretion by mouse splenocytes. The ED 50 for this effect is 0.4-2.4 µg/mL.
Source
Mouse myeloma cell line, NS0-derived
Mouse CD14
(Ala18-Pro345)
Accession # Q4FJP7IEGRMD Human IgG1
(Pro100-Lys330)N-terminus C-terminus Accession #
N-terminal Sequence
AnalysisAla18
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
61.8 kDa (monomer)
SDS-PAGE
85-95 kDa, reducing conditions
982-CD |
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Formulation Lyophilized from a 0.2 μm filtered solution in PBS. | ||
Reconstitution Reconstitute at 1 mg/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.
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Background: CD14
CD14 is a 55 kDa cell surface glycoprotein that is preferentially expressed on monocytes/macrophages. The mouse CD14 cDNA encodes a 366 amino acid (aa) residue precursor protein with a 15 aa signal peptide and a C-terminal hydrophobic region characteristic for glycosylphosphatidyinositol (GPI)-anchored proteins. Mouse CD14 has five potential N-linked glycosylation sites and also bears O-linked carbohydrates. The amino acid sequence of mouse CD14 is approximately 65% and 82% identical to the human and rat proteins, respectively. CD14 is a pattern recognition receptor that binds lipopolysaccharides (LPS) and a variety of ligands derived from different microbial sources. The binding of CD14 with LPS is catalyzed by LPS-binding protein (LBP). The toll-like-receptors have also been implicated in the transduction of CD14-LPS signals. Similar to other GPI-anchored proteins, soluble CD14 can be released from the cell surface by phosphatidyinositol-specific phospholipase C. Soluble CD14 has been detected in serum and body fluids. High concentrations of soluble CD14 have been shown to inhibit LPS-mediated responses. However, soluble CD14 can also potentiate LPS response in cells that do not express cell surface CD14.
References:
Wright, S.D. et al. (1990) Science 249:1431.
Pugin, J. et al. (1993) Proc. Natl. Acad. Sci. USA 90:2744.
Beutler, B. (2000) Current Opinion in Immunology 12:20.
Stelter, F. (2000) Chem. Immunol. 74:25.
Entrez Gene IDs:
929 (Human); 12475 (Mouse); 60350 (Rat); 100037938 (Porcine)
Alternate Names:
CD14 antigen; CD14 molecule; CD14; monocyte differentiation antigen CD14; Myeloid cell-specific leucine-rich glycoprotein
