CD14

CD14 is an approximately  50 kDa cell surface glycoprotein that is preferentially expressed on monocytes/macrophages. The human CD14 cDNA encodes a 375 amino acid (aa) residue precursor protein with a 19 aa signal peptide and a C-terminal hydrophobic region characteristic for glycosylphosphatidyinositol (GPI)-anchored proteins. Human CD14 has four potential N-linked glycosylation sitesand also bears O-linked carbohydrates. The amino acid sequence of human CD14 is approximately 65% identical with the mouse, rat, rabbit, and bovine proteins. 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).

References:

1. CD14 -550 C/T, which is related to the serum level of soluble CD14, is associated with the development of respiratory syncytial virus bronchiolitis in the Japanese population. J Infect Dis 2007 Jun 1;195(11):1618-24
2. Absence of soluble CD14 in saliva of young patients with dental caries. Eur J Oral Sci 2007 Apr;115(2):93-6
3. Polymorphisms in the CD14 and IL-6 genes associated with periodontal disease. J Clin Periodontol 2007 May;34(5): Identification by surface plasmon resonance of the mycobacterial lipomannan and lipoarabinomannan domains involved in binding to CD14 and LPS-binding protein. FEBS Lett 2007 Apr 3;581(7):1383-90
5. An improved protocol for generation of immuno-potent dendritic cells through direct electroporation of CD14+ monocytes. J Immunol Methods 2007 Apr 10;321(1-2):94-106
6. Polymorphisms of TLR4 but not CD14 are associated with a decreased risk of aggressive periodontitis. J Clin Periodontol 2007 Feb;34(2):111-7