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| | <StructureSection load='5k8y' size='340' side='right'caption='[[5k8y]], [[Resolution|resolution]] 2.40Å' scene=''> | | <StructureSection load='5k8y' size='340' side='right'caption='[[5k8y]], [[Resolution|resolution]] 2.40Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[5k8y]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5K8Y OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5K8Y FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5k8y]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5K8Y OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5K8Y FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=P6G:HEXAETHYLENE+GLYCOL'>P6G</scene></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.4Å</td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Cd207, Clec4k ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=P6G:HEXAETHYLENE+GLYCOL'>P6G</scene></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=5k8y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5k8y OCA], [http://pdbe.org/5k8y PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5k8y RCSB], [http://www.ebi.ac.uk/pdbsum/5k8y PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5k8y ProSAT]</span></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=5k8y FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5k8y OCA], [https://pdbe.org/5k8y PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5k8y RCSB], [https://www.ebi.ac.uk/pdbsum/5k8y PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5k8y ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/CLC4K_MOUSE CLC4K_MOUSE]] Calcium-dependent lectin displaying mannose-binding specificity. Induces the formation of Birbeck granules (BGs); is a potent regulator of membrane superimposition and zippering. Binds to sulfated as well as mannosylated glycans, keratan sulfate (KS) and beta-glucans. Facilitates uptake of antigens and is involved in the routing and/or processing of antigen for presentation to T cells.<ref>PMID:11777972</ref> <ref>PMID:18322168</ref> | + | [https://www.uniprot.org/uniprot/CLC4K_MOUSE CLC4K_MOUSE] Calcium-dependent lectin displaying mannose-binding specificity. Induces the formation of Birbeck granules (BGs); is a potent regulator of membrane superimposition and zippering. Binds to sulfated as well as mannosylated glycans, keratan sulfate (KS) and beta-glucans. Facilitates uptake of antigens and is involved in the routing and/or processing of antigen for presentation to T cells.<ref>PMID:11777972</ref> <ref>PMID:18322168</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Lk3 transgenic mice]] | + | [[Category: Mus musculus]] |
| - | [[Category: Aretz, J]] | + | [[Category: Aretz J]] |
| - | [[Category: Loll, B]] | + | [[Category: Loll B]] |
| - | [[Category: Rademacher, C]] | + | [[Category: Rademacher C]] |
| - | [[Category: Wahl, M C]] | + | [[Category: Wahl MC]] |
| - | [[Category: C-type lectin]]
| + | |
| - | [[Category: Calcium binding]]
| + | |
| - | [[Category: Carbohydrate binding protein]]
| + | |
| - | [[Category: Crd domain]]
| + | |
| - | [[Category: Glycoprotein]]
| + | |
| - | [[Category: Immune system]]
| + | |
| - | [[Category: Lectin]]
| + | |
| Structural highlights
Function
CLC4K_MOUSE Calcium-dependent lectin displaying mannose-binding specificity. Induces the formation of Birbeck granules (BGs); is a potent regulator of membrane superimposition and zippering. Binds to sulfated as well as mannosylated glycans, keratan sulfate (KS) and beta-glucans. Facilitates uptake of antigens and is involved in the routing and/or processing of antigen for presentation to T cells.[1] [2]
Publication Abstract from PubMed
The recognition of pathogen surface polysaccharides by glycan-binding proteins is a cornerstone of innate host defense. Many members of the C-type lectin receptor family serve as pattern recognition receptors facilitating pathogen uptake, antigen processing, and immunomodulation. Despite the high evolutionary pressure in host-pathogen interactions, it is still widely assumed that genetic homology conveys similar specificities. Here, we investigate the ligand specificities of the human and murine forms of the myeloid C-type lectin receptor Langerin for simple and complex ligands augmented by structural insight on murine Langerin. Whereas the two homologs share the same three-dimensional structure and recognize simple ligands identically, a screening of more than 300 bacterial polysaccharides revealed highly diverging avidity and selectivity for larger and more complex glycans. Structural and evolutionary conservation analysis identified a highly variable surface adjacent to the canonic binding site potentially forming a secondary site of interaction for large glycans.
Bacterial polysaccharide specificity of the pattern recognition receptor Langerin is highly species dependent.,Hanske J, Schulze J, Aretz J, McBride R, Loll B, Schmidt H, Knirel Y, Rabsch W, Wahl MC, Paulson JC, Rademacher C J Biol Chem. 2016 Nov 30. pii: jbc.M116.751750. PMID:27903635[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Valladeau J, Clair-Moninot V, Dezutter-Dambuyant C, Pin JJ, Kissenpfennig A, Mattei MG, Ait-Yahia S, Bates EE, Malissen B, Koch F, Fossiez F, Romani N, Lebecque S, Saeland S. Identification of mouse langerin/CD207 in Langerhans cells and some dendritic cells of lymphoid tissues. J Immunol. 2002 Jan 15;168(2):782-92. PMID:11777972
- ↑ Idoyaga J, Cheong C, Suda K, Suda N, Kim JY, Lee H, Park CG, Steinman RM. Cutting edge: langerin/CD207 receptor on dendritic cells mediates efficient antigen presentation on MHC I and II products in vivo. J Immunol. 2008 Mar 15;180(6):3647-50. PMID:18322168
- ↑ Hanske J, Schulze J, Aretz J, McBride R, Loll B, Schmidt H, Knirel Y, Rabsch W, Wahl MC, Paulson JC, Rademacher C. Bacterial polysaccharide specificity of the pattern recognition receptor Langerin is highly species dependent. J Biol Chem. 2016 Nov 30. pii: jbc.M116.751750. PMID:27903635 doi:http://dx.doi.org/10.1074/jbc.M116.751750
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