- Catalog number
- A00137-2
- Size / count
- 100 µg/Vial
- Dry ice
- No
- Hazardous
- No
- Discontinued
- No
- Background
- CD14 is a single-copy gene encoding 2 protein forms: a 50- to 55-kD glycosylphosphatidylinositol-anchored membrane protein (mCD14) and a monocyte or liver-derived soluble serum protein (sCD14) that lacks the anchor. This gene is located at bands 5q23-q31. The protein encoded by this gene is a surface antigen that is preferentially expressed on monocytes/macrophages. CD14 acts as a co-receptor (along with the Toll-like receptor TLR 4 and MD-2) for the detection of bacterial lipopolysaccharide (LPS) . CD14 can bind LPS only in the presence of lipopolysaccharide-binding protein (LBP) . Although LPS is considered its main ligand, CD14 also recognizes other pathogen-associated molecular patterns.
- Synonyms
- Monocyte differentiation antigen CD14; Myeloid cell-specific leucine-rich glycoprotein; CD14; Cd14
- Gene Name
- CD14
- Gene ID
- 929
- UniProt
- P08571
- Host
- Rabbit
- Reactivity
- Human
- Cross Reactivity
- No cross-reactivity with other proteins.
- Immunogen
- E.coli-derived human CD14 recombinant protein (Position: T20-N259) .
- Clonality
- Polyclonal
- Tissue Specificity
- Detected on peritoneal macrophages (at protein level) (PubMed:8612135) . Cell surface expression detected in lung alveolar macrophages, dendritic macrophages and lung macrophages (at protein level) (PubMed:19362712) .
- Applications
- ELISA, Flow Cytometry, IF, IHC, ICC
- Field of Research
- Cell Type Markers, Hematopoietic Progenitors, Immunology, Innate Immunity, Mesenchymal Stem Cells, Myeloid, Stem Cells, TLR Signaling
- Purification
- Immunogen affinity purified.
- Concentration
- Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.
- Form
- Lyophilized
- Reconstitution
- Adding 0.2 ml of distilled water will yield a concentration of 500 μg/ml.
- Function
- Coreceptor for bacterial lipopolysaccharide. In concert with LBP, binds to monomeric lipopolysaccharide and delivers it to the LY96/TLR4 complex, thereby mediating the innate immune response to bacterial lipopolysaccharide (LPS) (PubMed:16148141) . Acts via MyD88, TIRAP and TRAF6, leading to NF-kappa-B activation, cytokine secretion and the inflammatory response (PubMed:8612135, PubMed:15895089) . Acts as a coreceptor for TLR2:TLR6 heterodimer in response to diacylated lipopeptides and for TLR2:TLR1 heterodimer in response to triacylated lipopeptides, these clusters trigger signaling from the cell surface and subsequently are targeted to the Golgi in a lipid-raft dependent pathway (By similarity) . Acts as an accessory receptor for M.tuberculosis lipoproteins LprA, LprG and LpqH, in conjunction with coreceptors TLR2 and TLR1. The lipoproteins act as agonists to modulate antigen presenting cell functions in response to the pathogen (PubMed:19362712) . Binds electronegative LDL (LDL (-) ) and mediates the cytokine release induced by LDL (-) (By similarity) .
- References & Citations
- 1. Goyert, S. M., Ferrero, E., Rettig, W. J., Yenamandra, A. K., Obata, F., Le Beau, M. M. The CD14 monocyte differentiation antigen maps to a region encoding growth factors and receptors. Science 239: 497-500, 1988. 2. LeVan, T. D., Bloom, J. W., Bailey, T. J., Karp, C. L., Halonen, M., Martinez, F. D., Vercelli, D. A common single nucleotide polymorphism in the CD14 promoter decreases the affinity of Sp protein binding and enhances transcriptional activity. J. Immun. 167: 5838-5844, 2001. 3. Wright, S. D. CD14: a leukocyte membrane protein that functions in the response to endotoxin. (Abstract) FASEB J. 4: A1848 only, 1990.
- Storage Conditions
- At -20°C for one year from date of receipt. After reconstitution, at 4°C for one month. It can also be aliquotted and stored frozen at -20°C for six months. Avoid repeated freezing and thawing.
- Calculated Molecular Weight
- 89838 MW
- Observed Molecular Weight
- 50 kDa
- Applications Notes
- 6
- Gene Name Synonym
- CD14 antigen
- Subcellular Location
- Cell membrane
- Protein Name
- Toll-like receptor 2
- Isotype
- Rabbit IgG
- Contents
- Each vial contains 4 mg Trehalose, 0.9 mg NaCl, 0.2 mg Na2HPO4.
