1nbq

<StructureSection load='1nbq' size='340' side='right' caption='[[1nbq]], [[Resolution|resolution]] 2.90&Aring;' scene=''>

<table><tr><td colspan='2'>[[1nbq]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NBQ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1NBQ FirstGlance]. <br>

</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">JAM1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1nbq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nbq OCA], [http://pdbe.org/1nbq PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1nbq RCSB], [http://www.ebi.ac.uk/pdbsum/1nbq PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1nbq ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/JAM1_HUMAN JAM1_HUMAN]] Seems to play a role in epithelial tight junction formation. Appears early in primordial forms of cell junctions and recruits PARD3. The association of the PARD6-PARD3 complex may prevent the interaction of PARD3 with JAM1, thereby preventing tight junction assembly (By similarity). Plays a role in regulating monocyte transmigration involved in integrity of epithelial barrier. Involved in platelet activation. In case of orthoreovirus infection, serves as receptor for the virus.

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== Publication Abstract from PubMed ==

Reovirus attachment to cells is mediated by the binding of viral attachment protein sigma 1 to junctional adhesion molecule 1 (JAM1). The crystal structure of the extracellular region of human JAM1 (hJAM1) reveals two concatenated Ig-type domains with a pronounced bend at the domain interface. Two hJAM1 molecules form a dimer that is stabilized by extensive ionic and hydrophobic contacts between the N-terminal domains. This dimeric arrangement is similar to that observed previously in the murine homolog of JAM1, indicating physiologic relevance. However, differences in the dimeric structures of hJAM1 and murine JAM1 suggest that the interface is dynamic, perhaps as a result of its ionic nature. We demonstrate that hJAM1, but not the related proteins hJAM2 and hJAM3, serves as a reovirus receptor, which provides insight into sites in hJAM1 that likely interact with sigma 1. In addition, we present evidence that the previously reported structural homology between sigma 1 and the adenovirus attachment protein, fiber, also extends to their respective receptors, which form similar dimeric structures. Because both receptors are located at regions of cell-cell contact, this similarity suggests that reovirus and adenovirus use conserved mechanisms of entry and pathways of infection.

Crystal structure of human junctional adhesion molecule 1: implications for reovirus binding.,Prota AE, Campbell JA, Schelling P, Forrest JC, Watson MJ, Peters TR, Aurrand-Lions M, Imhof BA, Dermody TS, Stehle T Proc Natl Acad Sci U S A. 2003 Apr 29;100(9):5366-71. Epub 2003 Apr 15. PMID:12697893<ref>PMID:12697893</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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<div class="pdbe-citations 1nbq" style="background-color:#fffaf0;"></div>

== References ==

<references/>

[[Category: Human]]

[[Category: Aurrand-Lions, M]]

[[Category: Campbell, J A]]

[[Category: Dermody, T S]]

[[Category: Forrest, J C]]

[[Category: Imhof, B A]]

[[Category: Peters, T R]]

[[Category: Prota, A E]]

[[Category: Schelling, P]]

[[Category: Stehle, T]]

[[Category: Watson, M J]]

[[Category: Tight junction formation]]