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1r8o

From Proteopedia

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[[Image:1r8o.jpg|left|200px]]
 
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{{Structure
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==Crystal structure of an unusual Kunitz-type trypsin inhibitor from Copaifera langsdorffii seeds==
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|PDB= 1r8o |SIZE=350|CAPTION= <scene name='initialview01'>1r8o</scene>, resolution 1.83&Aring;
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<StructureSection load='1r8o' size='340' side='right'caption='[[1r8o]], [[Resolution|resolution]] 1.83&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'>[[1r8o]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Copaifera_langsdorffii Copaifera langsdorffii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1R8O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1R8O 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]] 1.83&#8491;</td></tr>
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|GENE=
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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=1r8o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1r8o OCA], [https://pdbe.org/1r8o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1r8o RCSB], [https://www.ebi.ac.uk/pdbsum/1r8o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1r8o ProSAT]</span></td></tr>
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}}
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</table>
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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/r8/1r8o_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=1r8o ConSurf].
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<div style="clear:both"></div>
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'''Crystal structure of an unusual Kunitz-type trypsin inhibitor from Copaifera langsdorffii seeds'''
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==See Also==
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*[[Trypsin inhibitor 3D structures|Trypsin inhibitor 3D structures]]
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__TOC__
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==Overview==
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</StructureSection>
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The crystallographic structure of a novel trypsin inhibitor (CTI) from Copaifera langsdorffii is reported. The structure was solved by MIRAS procedure and refined to a crystallographic residual of 17.3% (R(free) = 20.3%) at 1.8 A resolution. Two isomorphous derivatives were obtained by quick cryo-soaking approach. CTI is the first structure of a member of Kunitz (STI) family formed by two noncovalently bound polypeptide chains and only one disulfide bridge. A standard Kunitz-type inhibitor has a single polypeptide chain and two disulfide bridges. Structural features granting CTI high inhibitory activity are discussed.
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==About this Structure==
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1R8O is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Copaifera_langsdorffii Copaifera langsdorffii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1R8O OCA].
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==Reference==
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Three-dimensional structure of an unusual Kunitz (STI) type trypsin inhibitor from Copaifera langsdorffii., Krauchenco S, Nagem RA, da Silva JA, Marangoni S, Polikarpov I, Biochimie. 2004 Mar;86(3):167-72. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/15134830 15134830]
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[[Category: Copaifera langsdorffii]]
[[Category: Copaifera langsdorffii]]
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[[Category: Protein complex]]
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[[Category: Large Structures]]
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[[Category: Krauchenco, S.]]
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[[Category: Krauchenco S]]
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[[Category: Marangoni, S.]]
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[[Category: Marangoni S]]
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[[Category: Nagem, R A.P.]]
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[[Category: Nagem RAP]]
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[[Category: Polikarpov, I.]]
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[[Category: Polikarpov I]]
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[[Category: Silva, J A.da.]]
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[[Category: Da Silva JA]]
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[[Category: beta-trefoil fold]]
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[[Category: copaifera langsdorffii]]
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[[Category: kunitz (sti) trypsin inhibitor]]
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[[Category: x-ray structure]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 13:48:21 2008''
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Current revision

Crystal structure of an unusual Kunitz-type trypsin inhibitor from Copaifera langsdorffii seeds

PDB ID 1r8o

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