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| | ==Crystal structure of variable lymphocyte receptor VLRA.R2.1 in complex with hen egg lysozyme== | | ==Crystal structure of variable lymphocyte receptor VLRA.R2.1 in complex with hen egg lysozyme== |
| - | <StructureSection load='3m18' size='340' side='right' caption='[[3m18]], [[Resolution|resolution]] 1.95Å' scene=''> | + | <StructureSection load='3m18' size='340' side='right'caption='[[3m18]], [[Resolution|resolution]] 1.95Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[3m18]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus] and [http://en.wikipedia.org/wiki/Petma Petma]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3M18 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3M18 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[3m18]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus] and [https://en.wikipedia.org/wiki/Petromyzon_marinus Petromyzon marinus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3M18 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3M18 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</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]] 1.95Å</td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3m19|3m19]]</td></tr>
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">VLRA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=7757 PETMA])</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=3m18 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3m18 OCA], [https://pdbe.org/3m18 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3m18 RCSB], [https://www.ebi.ac.uk/pdbsum/3m18 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3m18 ProSAT]</span></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Lysozyme Lysozyme], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.2.1.17 3.2.1.17] </span></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=3m18 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3m18 OCA], [http://pdbe.org/3m18 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3m18 RCSB], [http://www.ebi.ac.uk/pdbsum/3m18 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3m18 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/LYSC_CHICK LYSC_CHICK]] Lysozymes have primarily a bacteriolytic function; those in tissues and body fluids are associated with the monocyte-macrophage system and enhance the activity of immunoagents. Has bacteriolytic activity against M.luteus.<ref>PMID:22044478</ref> | + | [https://www.uniprot.org/uniprot/C7B6Y3_PETMA C7B6Y3_PETMA] |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | *[[Lamprey Variable Lymphocyte Receptor|Lamprey Variable Lymphocyte Receptor]] | | *[[Lamprey Variable Lymphocyte Receptor|Lamprey Variable Lymphocyte Receptor]] |
| | *[[Lysozyme 3D structures|Lysozyme 3D structures]] | | *[[Lysozyme 3D structures|Lysozyme 3D structures]] |
| - | *[[Variable lymphocyte receptor|Variable lymphocyte receptor]] | + | *[[Variable lymphocyte receptor 3D structures|Variable lymphocyte receptor 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Gallus gallus]] | | [[Category: Gallus gallus]] |
| - | [[Category: Lysozyme]] | + | [[Category: Large Structures]] |
| - | [[Category: Petma]] | + | [[Category: Petromyzon marinus]] |
| - | [[Category: Deng, L]] | + | [[Category: Deng L]] |
| - | [[Category: Mariuzza, R A]] | + | [[Category: Mariuzza RA]] |
| - | [[Category: Velikovsky, C A]] | + | [[Category: Velikovsky CA]] |
| - | [[Category: Adaptive immunity]]
| + | |
| - | [[Category: Antibody]]
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| - | [[Category: B cell]]
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| - | [[Category: Immune system]]
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| - | [[Category: Leucine-rich repeat]]
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| - | [[Category: T cell]]
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| - | [[Category: Variable lymphocyte receptor]]
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| Structural highlights
Function
C7B6Y3_PETMA
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Adaptive immunity in jawless vertebrates is mediated by leucine-rich repeat proteins called "variable lymphocyte receptors" (VLRs). Two types of VLR (A and B) are expressed by mutually exclusive lymphocyte populations in lamprey. VLRB lymphocytes resemble the B cells of jawed vertebrates; VLRA lymphocytes are similar to T cells. We determined the structure of a high-affinity VLRA isolated from lamprey immunized with hen egg white lysozyme (HEL) in unbound and antigen-bound forms. The VLRA-HEL complex demonstrates that certain VLRAs, like gammadelta T-cell receptors (TCRs) but unlike alphabeta TCRs, can recognize antigens directly, without a requirement for processing or antigen-presenting molecules. Thus, these VLRAs feature the nanomolar affinities of antibodies, the direct recognition of unprocessed antigens of both antibodies and gammadelta TCRs, and the exclusive expression on the lymphocyte surface that is unique to alphabeta and gammadelta TCRs.
A structural basis for antigen recognition by the T cell-like lymphocytes of sea lamprey.,Deng L, Velikovsky CA, Xu G, Iyer LM, Tasumi S, Kerzic MC, Flajnik MF, Aravind L, Pancer Z, Mariuzza RA Proc Natl Acad Sci U S A. 2010 Jul 8. PMID:20616002[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Deng L, Velikovsky CA, Xu G, Iyer LM, Tasumi S, Kerzic MC, Flajnik MF, Aravind L, Pancer Z, Mariuzza RA. A structural basis for antigen recognition by the T cell-like lymphocytes of sea lamprey. Proc Natl Acad Sci U S A. 2010 Jul 8. PMID:20616002
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