View source for 4m7m

==Crystal structure of the R111K:R132Q:Y134F:T54V:R59W:A32W mutant of the Cellular Retinoic Acid Binding Protein Type II in complex with All-Trans Retinal at 2.57 Angstrom Resolution==
<StructureSection load='4m7m' size='340' side='right' caption='[[4m7m]], [[Resolution|resolution]] 2.57&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4m7m]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4M7M OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4M7M FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=RET:RETINAL'>RET</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2g7b|2g7b]], [[2g78|2g78]], [[2fr3|2fr3]], [[3f8a|3f8a]], [[4exz|4exz]], [[4eej|4eej]], [[4efg|4efg]], [[3fep|3fep]], [[4i9r|4i9r]], [[4i9s|4i9s]], [[4m6s|4m6s]]</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">CRABP2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=4m7m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4m7m OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4m7m RCSB], [http://www.ebi.ac.uk/pdbsum/4m7m PDBsum]</span></td></tr>
</table>
== Function ==
[[http://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. 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Reengineering of Cellular Retinoic Acid Binding Protein II (CRABPII) to be capable of binding retinal as a protonated Schiff base is described. Through rational alterations of the binding pocket, electrostatic perturbations of the embedded retinylidene chromophore that favor charge delocalization of the iminium charge lead to exquisite control in the regulation of chromophoric absorption properties, spanning the visible spectrum (474-640 nm). The pKa of the retinylidine protonated Schiff base was modulated from 2.4 to 8.1, giving rise to a set of proteins of varying colors and pH sensitivities. These proteins were used to demonstrate a concentration independent, ratiometric pH sensor.

Rational Design of a Colorimetric pH Sensor from a Soluble Retinoic Acid Chaperone.,Berbasova T, Nosrati M, Vasileiou C, Wang W, Lee KS, Yapici I, Geiger JH, Borhan B J Am Chem Soc. 2013 Sep 20. PMID:24059243<ref>PMID:24059243</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>

==See Also==
*[[Cellular retinoic acid-binding protein|Cellular retinoic acid-binding protein]]
*[[Gustavo Elberto Epalza Sanchez/Sandbox 1|Gustavo Elberto Epalza Sanchez/Sandbox 1]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Human]]
[[Category: Geiger, J H]]
[[Category: Nosrati, M]]
[[Category: Iminium]]
[[Category: Ph-sensing]]
[[Category: Protein engineering]]
[[Category: Retinylidene psb]]
[[Category: Transport protein]]
[[Category: Wavelength regulation]]