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| | <StructureSection load='4pxf' size='340' side='right'caption='[[4pxf]], [[Resolution|resolution]] 2.75Å' scene=''> | | <StructureSection load='4pxf' size='340' side='right'caption='[[4pxf]], [[Resolution|resolution]] 2.75Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4pxf]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4PXF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4PXF FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4pxf]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4PXF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4PXF FirstGlance]. <br> |
| - | </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=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=BOG:B-OCTYLGLUCOSIDE'>BOG</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PLM:PALMITIC+ACID'>PLM</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=TRE:TREHALOSE'>TRE</scene></td></tr> | + | </td></tr><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=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=BOG:B-OCTYLGLUCOSIDE'>BOG</scene>, <scene name='pdbligand=GLC:ALPHA-D-GLUCOSE'>GLC</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PLM:PALMITIC+ACID'>PLM</scene>, <scene name='pdbligand=PRD_900006:trehalose'>PRD_900006</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></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=4pxf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4pxf OCA], [http://pdbe.org/4pxf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4pxf RCSB], [http://www.ebi.ac.uk/pdbsum/4pxf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4pxf ProSAT]</span></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=4pxf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4pxf OCA], [https://pdbe.org/4pxf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4pxf RCSB], [https://www.ebi.ac.uk/pdbsum/4pxf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4pxf ProSAT]</span></td></tr> |
| | </table> | | </table> |
| - | == Disease == | |
| - | [[http://www.uniprot.org/uniprot/ARRS_BOVIN ARRS_BOVIN]] Note=S-antigen induces autoimmune uveitis. | |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/OPSD_BOVIN OPSD_BOVIN]] Photoreceptor required for image-forming vision at low light intensity. Required for photoreceptor cell viability after birth. Light-induced isomerization of 11-cis to all-trans retinal triggers a conformational change leading to G-protein activation and release of all-trans retinal (By similarity).<ref>PMID:16908857</ref> <ref>PMID:17060607</ref> [[http://www.uniprot.org/uniprot/ARRS_BOVIN ARRS_BOVIN]] Arrestin is one of the major proteins of the ros (retinal rod outer segments); it binds to photoactivated-phosphorylated rhodopsin, thereby apparently preventing the transducin-mediated activation of phosphodiesterase. Isoform B plays a role in the phototransduction cascade. | + | [https://www.uniprot.org/uniprot/OPSD_BOVIN OPSD_BOVIN] Photoreceptor required for image-forming vision at low light intensity. Required for photoreceptor cell viability after birth. Light-induced isomerization of 11-cis to all-trans retinal triggers a conformational change leading to G-protein activation and release of all-trans retinal (By similarity).<ref>PMID:16908857</ref> <ref>PMID:17060607</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | ==See Also== | | ==See Also== |
| | *[[Arrestin 3D structures|Arrestin 3D structures]] | | *[[Arrestin 3D structures|Arrestin 3D structures]] |
| - | *[[Rhodopsin|Rhodopsin]] | + | *[[Rhodopsin 3D structures|Rhodopsin 3D structures]] |
| | == References == | | == References == |
| | <references/> | | <references/> |
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| | [[Category: Bos taurus]] | | [[Category: Bos taurus]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Scheerer, P]] | + | [[Category: Scheerer P]] |
| - | [[Category: Szczepek, M]] | + | [[Category: Szczepek M]] |
| - | [[Category: Binding to acticated and phosphorylated rhodopsin]]
| + | |
| - | [[Category: Desensitisation of the visual transduction cascade]]
| + | |
| - | [[Category: G-protein coupled receptor]]
| + | |
| - | [[Category: Opsin]]
| + | |
| - | [[Category: Phosphoprotein]]
| + | |
| - | [[Category: Photoreceptor]]
| + | |
| - | [[Category: Photoreceptor protein]]
| + | |
| - | [[Category: Retinal protein]]
| + | |
| - | [[Category: Rhodopsin]]
| + | |
| - | [[Category: Sensory transduction]]
| + | |
| - | [[Category: Signaling protein]]
| + | |
| - | [[Category: Transducer]]
| + | |
| - | [[Category: Transmembrane]]
| + | |
| - | [[Category: Vision]]
| + | |
| - | [[Category: Visual arrestin]]
| + | |
| Structural highlights
4pxf is a 2 chain structure with sequence from Bos taurus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Ligands: | , , , , , , , , |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
OPSD_BOVIN Photoreceptor required for image-forming vision at low light intensity. Required for photoreceptor cell viability after birth. Light-induced isomerization of 11-cis to all-trans retinal triggers a conformational change leading to G-protein activation and release of all-trans retinal (By similarity).[1] [2]
Publication Abstract from PubMed
G-protein-coupled receptors (GPCRs) transmit extracellular signals to activate intracellular heterotrimeric G proteins (Galphabetagamma) and arrestins. For G protein signalling, the Galpha C-terminus (GalphaCT) binds to a cytoplasmic crevice of the receptor that opens upon activation. A consensus motif is shared among GalphaCT from the Gi/Gt family and the 'finger loop' region (ArrFL1-4) of all four arrestins. Here we present a 2.75 A crystal structure of ArrFL-1, a peptide analogue of the finger loop of rod photoreceptor arrestin, in complex with the prototypical GPCR rhodopsin. Functional binding of ArrFL to the receptor was confirmed by ultraviolet-visible absorption spectroscopy, competitive binding assays and Fourier transform infrared spectroscopy. For both GalphaCT and ArrFL, binding to the receptor crevice induces a similar reverse turn structure, although significant structural differences are seen at the rim of the binding crevice. Our results reflect both the common receptor-binding interface and the divergent biological functions of G proteins and arrestins.
Crystal structure of a common GPCR-binding interface for G protein and arrestin.,Szczepek M, Beyriere F, Hofmann KP, Elgeti M, Kazmin R, Rose A, Bartl FJ, von Stetten D, Heck M, Sommer ME, Hildebrand PW, Scheerer P Nat Commun. 2014 Sep 10;5:4801. doi: 10.1038/ncomms5801. PMID:25205354[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Nakamichi H, Okada T. Local peptide movement in the photoreaction intermediate of rhodopsin. Proc Natl Acad Sci U S A. 2006 Aug 22;103(34):12729-34. Epub 2006 Aug 14. PMID:16908857
- ↑ Salom D, Lodowski DT, Stenkamp RE, Le Trong I, Golczak M, Jastrzebska B, Harris T, Ballesteros JA, Palczewski K. Crystal structure of a photoactivated deprotonated intermediate of rhodopsin. Proc Natl Acad Sci U S A. 2006 Oct 31;103(44):16123-8. Epub 2006 Oct 23. PMID:17060607
- ↑ Szczepek M, Beyriere F, Hofmann KP, Elgeti M, Kazmin R, Rose A, Bartl FJ, von Stetten D, Heck M, Sommer ME, Hildebrand PW, Scheerer P. Crystal structure of a common GPCR-binding interface for G protein and arrestin. Nat Commun. 2014 Sep 10;5:4801. doi: 10.1038/ncomms5801. PMID:25205354 doi:http://dx.doi.org/10.1038/ncomms5801
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