2g7b: Difference between revisions

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-[[Image:2g7b.png|left|200px]]
-{{STRUCTURE_2g7b|  PDB=2g7b  |  SCENE=  }}
+==Crystal Structure of the R132K:R111L:L121E mutant of Cellular Retinoic Acid Binding Protein Type II In Complex With All-Trans-Retinal At 1.18 Angstroms Resolution==
+<StructureSection load='2g7b' size='340' side='right'caption='[[2g7b]], [[Resolution|resolution]] 1.18&Aring;' scene=''>
+== Structural highlights ==
+<table><tr><td colspan='2'>[[2g7b]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2G7B OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2G7B FirstGlance]. <br>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.18&#8491;</td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AZE:ALL-TRANS+AXEROPHTHENE'>AZE</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></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=2g7b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2g7b OCA], [https://pdbe.org/2g7b PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2g7b RCSB], [https://www.ebi.ac.uk/pdbsum/2g7b PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2g7b ProSAT]</span></td></tr>
+</table>
+== Function ==
+[https://www.uniprot.org/uniprot/RABP2_HUMAN RABP2_HUMAN] Transports retinoic acid to the nucleus. Regulates the access of retinoic acid to the nuclear retinoic acid receptors.
+== Evolutionary Conservation ==
+[[Image:Consurf_key_small.gif|200px|right]]
+Check<jmol>
+  <jmolCheckbox>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/g7/2g7b_consurf.spt"</scriptWhenChecked>
+    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
+    <text>to colour the structure by Evolutionary Conservation</text>
+  </jmolCheckbox>
+</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=2g7b ConSurf].
+<div style="clear:both"></div>
+<div style="background-color:#fffaf0;">
+== Publication Abstract from PubMed ==
+Rational redesign of the binding pocket of Cellular Retinoic Acid Binding Protein II (CRABPII) has provided a mutant that can bind retinal as a protonated Schiff base, mimicking the binding observed in rhodopsin. The reengineering was accomplished through a series of choreographed manipulations to ultimately orient the reactive species (the epsilon-amino group of Lys132 and the carbonyl of retinal) in the proper geometry for imine formation. The guiding principle was to achieve the appropriate Burgi-Dunitz trajectory for the reaction to ensue. Through crystallographic analysis of protein mutants incapable of forming the requisite Schiff base, a highly ordered water molecule was identified as a key culprit in orienting retinal in a nonconstructive manner. Removal of the ordered water, along with placing reinforcing mutations to favor the desired orientation of retinal, led to a triple mutant CRABPII protein capable of nanomolar binding of retinal as a protonated Schiff base. The high-resolution crystal structure of all-trans-retinal bound to the CRABPII triple mutant (1.2 A resolution) unequivocally illustrates the imine formed between retinal and the protein.
-===Crystal Structure of the R132K:R111L:L121E mutant of Cellular Retinoic Acid Binding Protein Type II In Complex With All-Trans-Retinal At 1.18 Angstroms Resolution===
+Protein design: reengineering cellular retinoic acid binding protein II into a rhodopsin protein mimic.,Vasileiou C, Vaezeslami S, Crist RM, Rabago-Smith M, Geiger JH, Borhan B J Am Chem Soc. 2007 May 16;129(19):6140-8. Epub 2007 Apr 21. PMID:17447762<ref>PMID:17447762</ref>
-{{ABSTRACT_PUBMED_17447762}}
+From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
+</div>
-==About this Structure==
+<div class="pdbe-citations 2g7b" style="background-color:#fffaf0;"></div>
-[[2g7b]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2G7B OCA].
 ==See Also==
 *[[CRABP I ( Cellular Retinoic Acid Binding Protein )|CRABP I ( Cellular Retinoic Acid Binding Protein )]]
-*[[Cellular retinoic acid-binding protein|Cellular retinoic acid-binding protein]]
+*[[Cellular retinoic acid-binding protein 3D structures|Cellular retinoic acid-binding protein 3D structures]]
 *[[Gustavo Elberto Epalza Sanchez/Sandbox 1|Gustavo Elberto Epalza Sanchez/Sandbox 1]]
 *[[Molecular Playground/CRABP I (Cellular Retinoic Acid Binding Protein)|Molecular Playground/CRABP I (Cellular Retinoic Acid Binding Protein)]]
+== References ==
-==Reference==
+<references/>
-<ref group="xtra">PMID:017447762</ref><references group="xtra"/>
+__TOC__
+</StructureSection>
 [[Category: Homo sapiens]]
-[[Category: Geiger, J H.]]
+[[Category: Large Structures]]
-[[Category: Vaezeslami, S.]]
+[[Category: Geiger JH]]
-[[Category: Beta barrel]]
+[[Category: Vaezeslami S]]
-[[Category: Crabpii]]
-[[Category: High resolution]]
-[[Category: Protonated schiff base]]
-[[Category: Retinal]]
-[[Category: Retinoic acid]]
-[[Category: Retinoid]]
-[[Category: Schiff base]]
-[[Category: Transport protein]]