1lk3

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[[Image:1lk3.jpg|left|200px]]
 
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{{Structure
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==ENGINEERED HUMAN INTERLEUKIN-10 MONOMER COMPLEXED TO 9D7 FAB FRAGMENT==
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|PDB= 1lk3 |SIZE=350|CAPTION= <scene name='initialview01'>1lk3</scene>, resolution 1.91&Aring;
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<StructureSection load='1lk3' size='340' side='right'caption='[[1lk3]], [[Resolution|resolution]] 1.91&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND=
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<table><tr><td colspan='2'>[[1lk3]] is a 6 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LK3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1LK3 FirstGlance]. <br>
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|ACTIVITY=
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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]] 1.91&#8491;</td></tr>
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|GENE= IL10 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])
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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=1lk3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lk3 OCA], [https://pdbe.org/1lk3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1lk3 RCSB], [https://www.ebi.ac.uk/pdbsum/1lk3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1lk3 ProSAT]</span></td></tr>
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}}
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/IL10_HUMAN IL10_HUMAN] Inhibits the synthesis of a number of cytokines, including IFN-gamma, IL-2, IL-3, TNF and GM-CSF produced by activated macrophages and by helper T-cells.
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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/lk/1lk3_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=1lk3 ConSurf].
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<div style="clear:both"></div>
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'''ENGINEERED HUMAN INTERLEUKIN-10 MONOMER COMPLEXED TO 9D7 FAB FRAGMENT'''
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==See Also==
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*[[Interleukin 3D structures|Interleukin 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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IL-10 is a dimeric cytokine that must engage its high-affinity cell surface receptor, IL-10R1, to induce multiple cellular activities. Here we report the 1.9 A crystal structure of an engineered IL-10 monomer (IL-10M1) in complex with a neutralizing Fab fragment (9D7Fab). 9D7Fab and IL-10R1 bind distinct nonoverlapping surfaces on IL-10M1. Antagonism of the IL-10M1/IL-10R1 interaction is the result of 9D7Fab-induced conformational changes in the CD loop of IL-10M1 that indirectly alter the structure of the IL-10R1 binding site. A single mutation (Ile87Ala) in the same CD loop region of the Epstein-Barr virus IL-10 (ebvIL-10) also reduces IL-10R1 binding affinity, suggesting that ebvIL-10 and 9D7Fab use similar allosteric mechanisms to modulate IL-10R1 affinity and biological activity.
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==Disease==
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Known diseases associated with this structure: Graft-versus-host disease, protection against OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=124092 124092]], HIV-1, susceptibility to OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=124092 124092]], Rheumatoid arthritis, progression of OMIM:[[http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=124092 124092]]
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==About this Structure==
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1LK3 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LK3 OCA].
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==Reference==
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Noncompetitive antibody neutralization of IL-10 revealed by protein engineering and x-ray crystallography., Josephson K, Jones BC, Walter LJ, DiGiacomo R, Indelicato SR, Walter MR, Structure. 2002 Jul;10(7):981-7. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/12121653 12121653]
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[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Large Structures]]
[[Category: Rattus norvegicus]]
[[Category: Rattus norvegicus]]
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[[Category: Single protein]]
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[[Category: DiGiacomo R]]
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[[Category: DiGiacomo, R.]]
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[[Category: Indelicato SR]]
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[[Category: Indelicato, S R.]]
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[[Category: Jones BC]]
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[[Category: Jones, B C.]]
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[[Category: Josephson K]]
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[[Category: Josephson, K.]]
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[[Category: Walter LJ]]
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[[Category: Walter, L J.]]
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[[Category: Walter MR]]
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[[Category: Walter, M R.]]
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[[Category: antigen-antibody complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:31:49 2008''
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Current revision

ENGINEERED HUMAN INTERLEUKIN-10 MONOMER COMPLEXED TO 9D7 FAB FRAGMENT

PDB ID 1lk3

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