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4eej

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==Crystal Structure of the Q108K:K40L:T51V:T53C:Y19W:R58W:T29L:Q4R Mutant of Cellular Retinol Binding Protein Type II in Complex with All-trans-Retinal at 1.5 Angstrom Resolution==
==Crystal Structure of the Q108K:K40L:T51V:T53C:Y19W:R58W:T29L:Q4R Mutant of Cellular Retinol Binding Protein Type II in Complex with All-trans-Retinal at 1.5 Angstrom Resolution==
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<StructureSection load='4eej' size='340' side='right' caption='[[4eej]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
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<StructureSection load='4eej' size='340' side='right'caption='[[4eej]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[4eej]] is a 2 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=4EEJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4EEJ FirstGlance]. <br>
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<table><tr><td colspan='2'>[[4eej]] is a 2 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=4EEJ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4EEJ FirstGlance]. <br>
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</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=RET:RETINAL'>RET</scene></td></tr>
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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]] 1.501&#8491;</td></tr>
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<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4ede|4ede]], [[4efg|4efg]]</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ACT:ACETATE+ION'>ACT</scene>, <scene name='pdbligand=RET:RETINAL'>RET</scene></td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">RBP2, CRBP2 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=4eej FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4eej OCA], [https://pdbe.org/4eej PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4eej RCSB], [https://www.ebi.ac.uk/pdbsum/4eej PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4eej ProSAT]</span></td></tr>
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<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=4eej FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4eej OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4eej RCSB], [http://www.ebi.ac.uk/pdbsum/4eej PDBsum]</span></td></tr>
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</table>
</table>
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<div style="background-color:#fffaf0;">
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== Function ==
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== Publication Abstract from PubMed ==
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[https://www.uniprot.org/uniprot/RET2_HUMAN RET2_HUMAN] Intracellular transport of retinol.
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Protein-chromophore interactions are a central component of a wide variety of critical biological processes such as color vision and photosynthesis. To understand the fundamental elements that contribute to spectral tuning of a chromophore inside the protein cavity, we redesigned human cellular retinol binding protein II (hCRBPII) to fully encapsulate all-trans-retinal and form a covalent bond as a protonated Schiff base. This system, using rational mutagenesis designed to alter the electrostatic environment within the binding pocket of the host protein, enabled regulation of the absorption maximum of the pigment in the range of 425 to 644 nanometers. With only nine point mutations, the hCRBPII mutants induced a systematic shift in the absorption profile of all-trans-retinal of more than 200 nanometers across the visible spectrum.
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Tuning the electronic absorption of protein-embedded all-trans-retinal.,Wang W, Nossoni Z, Berbasova T, Watson CT, Yapici I, Lee KS, Vasileiou C, Geiger JH, Borhan B Science. 2012 Dec 7;338(6112):1340-3. doi: 10.1126/science.1226135. PMID:23224553<ref>PMID:23224553</ref>
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==See Also==
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</div>
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*[[Retinol-binding protein 3D structures|Retinol-binding protein 3D structures]]
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== References ==
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<references/>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Homo sapiens]]
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[[Category: Geiger, J H]]
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[[Category: Large Structures]]
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[[Category: Nossoni, Z]]
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[[Category: Geiger JH]]
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[[Category: Beta barrel]]
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[[Category: Nossoni Z]]
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[[Category: Retinal complex]]
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[[Category: Transport protein]]
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Current revision

Crystal Structure of the Q108K:K40L:T51V:T53C:Y19W:R58W:T29L:Q4R Mutant of Cellular Retinol Binding Protein Type II in Complex with All-trans-Retinal at 1.5 Angstrom Resolution

PDB ID 4eej

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