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  • Title: Structure and chromosomal location of the gene for endothelial-leukocyte adhesion molecule 1.
    Author: Collins T, Williams A, Johnston GI, Kim J, Eddy R, Shows T, Gimbrone MA, Bevilacqua MP.
    Journal: J Biol Chem; 1991 Feb 05; 266(4):2466-73. PubMed ID: 1703529.
    Abstract:
    Endothelial-leukocyte adhesion molecule 1 is a cell surface glycoprotein expressed by cytokine-activated endothelium that mediates the adhesion of blood neutrophils. Endothelial-leukocyte adhesion molecule 1 is a member of the selectin family of cell adhesion molecules each of which contain an amino-terminal lectin-like domain, followed by an epidermal growth factor-like domain and a variable number of short consensus repeats similar to those found in complement binding proteins. Genomic clones encoding the ELAM gene were isolated and the organization of the ELAM gene was determined. The gene, which is present in a single copy in the human genome, contains 14 exons spanning about 13 kilobases of DNA. The positions of exon-intron boundaries correlate with the putative functional subdivisions of the protein. Introns are found at similar positions in all of the six complement regulatory repeats, suggesting that these elements arose by internal gene duplication. A consensus TATAA element is located upstream of the transcriptional start site. The ELAM promoter contains an inverted CCAAT box and consensus NF-kappa B- and AP-1-binding sites. The ELAM gene was assigned to the q12 greater than qter region of human chromosome 1 by analysis of human-mouse hybrid cell lines. Two other members of the selectin gene family, the leukocyte adhesion molecule 1 (LAM-1, TQ1, LEC-CAM 1, or Leu-8) and the granule membrane protein 140 (GMP-140, PADGEM, or CD62) have been localized to the long arm of chromosome 1, as have the structurally related complement binding proteins, suggesting that these genes may share a common evolutionary history.
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