3mj9: Difference between revisions
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< | ==Crystal structure of JAML in complex with the stimulatory antibody HL4E10== | ||
<StructureSection load='3mj9' size='340' side='right'caption='[[3mj9]], [[Resolution|resolution]] 2.95Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3mj9]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus] and [https://en.wikipedia.org/wiki/Nothocricetulus_migratorius Nothocricetulus migratorius]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3MJ9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3MJ9 FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.95Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3mj9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3mj9 OCA], [https://pdbe.org/3mj9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3mj9 RCSB], [https://www.ebi.ac.uk/pdbsum/3mj9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3mj9 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/JAML_MOUSE JAML_MOUSE] Transmembrane protein of the plasma membrane of leukocytes that control their migration and activation through interaction with CXADR, a plasma membrane receptor found on adjacent epithelial and endothelial cells. The interaction between both receptors mediates the activation of gamma-delta T-cells, a subpopulation of T-cells residing in epithelia and involved in tissue homeostasis and repair. Upon epithelial CXADR-binding, JAML induces downstream cell signaling events in gamma-delta T-cells through PI3-kinase and MAP kinases. It results in proliferation and production of cytokines and growth factors by T-cells that in turn stimulate epithelial tissues repair. It also controls the transmigration of leukocytes within epithelial and endothelial tissues through adhesive interactions with epithelial and endothelial CXADR.<ref>PMID:20813954</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
gammadelta T cells bridge innate and adaptive immunity and function in immunosurveillance, immunoregulation, tumor cell recognition, and as first line of defense against microbial infection. Costimulation of epithelial gammadelta T cell activation by the JAML receptor can be induced by interaction with its endogenous ligand CAR or by binding of the stimulatory antibody HL4E10. We, therefore, determined the crystal structure of the JAML-HL4E10 Fab complex at 2.95 A resolution. HL4E10 binds the membrane-proximal domain of JAML through hydrophobic interactions that account for nanomolar affinity and long half-life, contrasting with the fast kinetics and micromolar affinity of the hydrophilic CAR interaction with the membrane-distal JAML domain. Thus, despite different binding sites and mechanisms, JAML interaction with these two disparate ligands leads to the same functional outcome, namely JAML triggering and induction of cell signaling. Several characteristics of the HL4E10 antibody might then be harnessed in therapeutic applications, such as promoting healing of acute or chronic wounds. | |||
Molecular insights into gammadelta T cell costimulation by an anti-JAML antibody.,Verdino P, Witherden DA, Ferguson MS, Corper AL, Schiefner A, Havran WL, Wilson IA Structure. 2011 Jan 12;19(1):80-9. PMID:21220118<ref>PMID:21220118</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 3mj9" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Antibody 3D structures|Antibody 3D structures]] | |||
*[[3D structures of non-human antibody|3D structures of non-human antibody]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
== | </StructureSection> | ||
[[ | [[Category: Large Structures]] | ||
== | |||
< | |||
[[Category: | |||
[[Category: Mus musculus]] | [[Category: Mus musculus]] | ||
[[Category: Verdino | [[Category: Nothocricetulus migratorius]] | ||
[[Category: Wilson | [[Category: Verdino P]] | ||
[[Category: Wilson IA]] | |||
Latest revision as of 09:29, 27 November 2024
Crystal structure of JAML in complex with the stimulatory antibody HL4E10Crystal structure of JAML in complex with the stimulatory antibody HL4E10
Structural highlights
FunctionJAML_MOUSE Transmembrane protein of the plasma membrane of leukocytes that control their migration and activation through interaction with CXADR, a plasma membrane receptor found on adjacent epithelial and endothelial cells. The interaction between both receptors mediates the activation of gamma-delta T-cells, a subpopulation of T-cells residing in epithelia and involved in tissue homeostasis and repair. Upon epithelial CXADR-binding, JAML induces downstream cell signaling events in gamma-delta T-cells through PI3-kinase and MAP kinases. It results in proliferation and production of cytokines and growth factors by T-cells that in turn stimulate epithelial tissues repair. It also controls the transmigration of leukocytes within epithelial and endothelial tissues through adhesive interactions with epithelial and endothelial CXADR.[1] Publication Abstract from PubMedgammadelta T cells bridge innate and adaptive immunity and function in immunosurveillance, immunoregulation, tumor cell recognition, and as first line of defense against microbial infection. Costimulation of epithelial gammadelta T cell activation by the JAML receptor can be induced by interaction with its endogenous ligand CAR or by binding of the stimulatory antibody HL4E10. We, therefore, determined the crystal structure of the JAML-HL4E10 Fab complex at 2.95 A resolution. HL4E10 binds the membrane-proximal domain of JAML through hydrophobic interactions that account for nanomolar affinity and long half-life, contrasting with the fast kinetics and micromolar affinity of the hydrophilic CAR interaction with the membrane-distal JAML domain. Thus, despite different binding sites and mechanisms, JAML interaction with these two disparate ligands leads to the same functional outcome, namely JAML triggering and induction of cell signaling. Several characteristics of the HL4E10 antibody might then be harnessed in therapeutic applications, such as promoting healing of acute or chronic wounds. Molecular insights into gammadelta T cell costimulation by an anti-JAML antibody.,Verdino P, Witherden DA, Ferguson MS, Corper AL, Schiefner A, Havran WL, Wilson IA Structure. 2011 Jan 12;19(1):80-9. PMID:21220118[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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