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3.1 Papers
Section Intro | Molecular modeling | Bioinformatics | docking | Methods and algorithms | Applications | Chronological list

3.1.6 Chronological list
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3.1.6.74 Tomko, R.P., Totrov, M., Abagyan, R. and Philipson, L. (2000). Expression of the Adenovirus Receptor and Its Interaction with the Fiber Knob. Experimental Cell Research, Feb 25;255(1), 47-55

The coxsackievirus group B (CVB) and adenovirus (Ad) receptor (HCVADR, formerly HCAR) is a cell surface protein with two immunoglobulin-like regions (IG1 and IG2) that serves as a receptor for two structurally unrelated viruses. We have established the tissue distribution of the receptor in the rodent by immunohistochemistry and show that the receptor is broadly expressed during embryonic development in the central and peripheral nervous systems and in several types of epithelial cells. The tissue distribution is more restricted in the adult but remains high mainly in epithelial cells. Using site-directed mutagenesis, based on computer modeling of the IG1 region, Ad5 binding could be inhibited but CVB attachment was unaffected. A double amino acid substitution in a three-stranded anti-parallel beta sheet that may form a face of the receptor completely inhibited Ad5 binding. Therefore, we conclude that the molecular interactions critical for Ad5 binding to HCVADR do not overlap with those of CVB3. In fact a specific antibody interfering with only CVB binding recognizes the IG2 domain in the receptor, suggesting that the CVB interacts with this region or an overlap between the IG1 and the IG2 regions. Copyright 2000 Academic Press.