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1p1z

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[[Image:1p1z.gif|left|200px]]<br /><applet load="1p1z" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="1p1z, resolution 3.26&Aring;" />
 
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'''X-RAY CRYSTAL STRUCTURE OF THE LECTIN-LIKE NATURAL KILLER CELL RECEPTOR LY-49C BOUND TO ITS MHC CLASS I LIGAND H-2Kb'''<br />
 
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==Overview==
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==X-RAY CRYSTAL STRUCTURE OF THE LECTIN-LIKE NATURAL KILLER CELL RECEPTOR LY-49C BOUND TO ITS MHC CLASS I LIGAND H-2Kb==
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The Ly49 family of natural killer (NK) receptors regulates NK cell function by sensing major histocompatibility complex (MHC) class I. Ly49 receptors show complex patterns of MHC class I cross-reactivity and, in certain cases, peptide selectivity. To investigate whether specificity differences result from topological differences in MHC class I engagement, we determined the structure of the peptide-selective receptor Ly49C in complex with H-2K(b). The Ly49C homodimer binds two MHC class I molecules in symmetrical way, a mode distinct from that of Ly49A, which binds MHC class I asymmetrically. Ly49C does not directly contact the MHC-bound peptide. In addition, MHC crosslinking by Ly49C was demonstrated in solution. We propose a dynamic model for Ly49-MHC class I interactions involving conformational changes in the receptor, whereby variations in Ly49 dimerization mediate different MHC-binding modes.
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<StructureSection load='1p1z' size='340' side='right'caption='[[1p1z]], [[Resolution|resolution]] 3.26&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1p1z]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Gallus_gallus Gallus gallus] and [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1P1Z OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1P1Z FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.26&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1p1z FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1p1z OCA], [https://pdbe.org/1p1z PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1p1z RCSB], [https://www.ebi.ac.uk/pdbsum/1p1z PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1p1z ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/HA1B_MOUSE HA1B_MOUSE] Involved in the presentation of foreign antigens to the immune system.
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/p1/1p1z_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1p1z ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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1P1Z is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1P1Z OCA].
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*[[Beta-2 microglobulin 3D structures|Beta-2 microglobulin 3D structures]]
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*[[MHC 3D structures|MHC 3D structures]]
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==Reference==
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*[[MHC I 3D structures|MHC I 3D structures]]
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Variable MHC class I engagement by Ly49 natural killer cell receptors demonstrated by the crystal structure of Ly49C bound to H-2K(b)., Dam J, Guan R, Natarajan K, Dimasi N, Chlewicki LK, Kranz DM, Schuck P, Margulies DH, Mariuzza RA, Nat Immunol. 2003 Dec;4(12):1213-22. Epub 2003 Nov 2. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=14595439 14595439]
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__TOC__
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</StructureSection>
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[[Category: Gallus gallus]]
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[[Category: Large Structures]]
[[Category: Mus musculus]]
[[Category: Mus musculus]]
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[[Category: Protein complex]]
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[[Category: Dam J]]
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[[Category: Dam, J.]]
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[[Category: Dimasi N]]
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[[Category: Dimasi, N.]]
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[[Category: Margulies DH]]
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[[Category: Margulies, D H.]]
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[[Category: Mariuzza RA]]
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[[Category: Mariuzza, R A.]]
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[[Category: Natarajan K]]
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[[Category: Natarajan, K.]]
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[[Category: Rangjin G]]
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[[Category: Rangjin, G.]]
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[[Category: antigenic peptide]]
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[[Category: kb]]
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[[Category: ly49]]
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[[Category: mhc]]
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[[Category: nk]]
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[[Category: ova]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 14:24:14 2008''
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Current revision

X-RAY CRYSTAL STRUCTURE OF THE LECTIN-LIKE NATURAL KILLER CELL RECEPTOR LY-49C BOUND TO ITS MHC CLASS I LIGAND H-2Kb

PDB ID 1p1z

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