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| | <StructureSection load='4o0p' size='340' side='right'caption='[[4o0p]], [[Resolution|resolution]] 3.80Å' scene=''> | | <StructureSection load='4o0p' size='340' side='right'caption='[[4o0p]], [[Resolution|resolution]] 3.80Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4o0p]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Deira Deira]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4O0P OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4O0P FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4o0p]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Deinococcus_radiodurans_R1 Deinococcus radiodurans R1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4O0P OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4O0P FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=LBV:3-[2-[(Z)-[3-(2-CARBOXYETHYL)-5-[(Z)-(4-ETHENYL-3-METHYL-5-OXIDANYLIDENE-PYRROL-2-YLIDENE)METHYL]-4-METHYL-PYRROL-1-IUM-2-YLIDENE]METHYL]-5-[(Z)-[(3E)-3-ETHYLIDENE-4-METHYL-5-OXIDANYLIDENE-PYRROLIDIN-2-YLIDENE]METHYL]-4-METHYL-1H-PYRROL-3-YL]PROPANOIC+ACID'>LBV</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=LBV:3-[2-[(Z)-[3-(2-CARBOXYETHYL)-5-[(Z)-(4-ETHENYL-3-METHYL-5-OXIDANYLIDENE-PYRROL-2-YLIDENE)METHYL]-4-METHYL-PYRROL-1-IUM-2-YLIDENE]METHYL]-5-[(Z)-[(3E)-3-ETHYLIDENE-4-METHYL-5-OXIDANYLIDENE-PYRROLIDIN-2-YLIDENE]METHYL]-4-METHYL-1H-PYRROL-3-YL]PROPANOIC+ACID'>LBV</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4o01|4o01]]</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=4o0p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4o0p OCA], [https://pdbe.org/4o0p PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4o0p RCSB], [https://www.ebi.ac.uk/pdbsum/4o0p PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4o0p ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">bphP ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=243230 DEIRA])</td></tr>
| + | |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Histidine_kinase Histidine kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.13.3 2.7.13.3] </span></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=4o0p FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4o0p OCA], [http://pdbe.org/4o0p PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4o0p RCSB], [http://www.ebi.ac.uk/pdbsum/4o0p PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4o0p ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/BPHY_DEIRA BPHY_DEIRA]] Photoreceptor which exists in two forms that are reversibly interconvertible by light: the R form that absorbs maximally in the red region of the spectrum and the FR form that absorbs maximally in the far-red region. Has also a slight blue shift for the far-red maximum. Could also absorb green light. May participate in regulating pigment synthesis like the carotenoid deinoxanthin which could protect the bacterium from intense visible light. | + | [https://www.uniprot.org/uniprot/BPHY_DEIRA BPHY_DEIRA] Photoreceptor which exists in two forms that are reversibly interconvertible by light: the R form that absorbs maximally in the red region of the spectrum and the FR form that absorbs maximally in the far-red region. Has also a slight blue shift for the far-red maximum. Could also absorb green light. May participate in regulating pigment synthesis like the carotenoid deinoxanthin which could protect the bacterium from intense visible light. |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Deira]] | + | [[Category: Deinococcus radiodurans R1]] |
| - | [[Category: Histidine kinase]]
| + | |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Ihalainen, J A]] | + | [[Category: Ihalainen JA]] |
| - | [[Category: Takala, H]] | + | [[Category: Takala H]] |
| - | [[Category: Westenhoff, S]] | + | [[Category: Westenhoff S]] |
| - | [[Category: Biliverdin]]
| + | |
| - | [[Category: Chromophore]]
| + | |
| - | [[Category: Photoconversion]]
| + | |
| - | [[Category: Phytochrome]]
| + | |
| - | [[Category: Red-light photoreceptor]]
| + | |
| - | [[Category: Sensory transduction]]
| + | |
| - | [[Category: Signaling protein]]
| + | |
| - | [[Category: Transferase]]
| + | |
| Structural highlights
Function
BPHY_DEIRA Photoreceptor which exists in two forms that are reversibly interconvertible by light: the R form that absorbs maximally in the red region of the spectrum and the FR form that absorbs maximally in the far-red region. Has also a slight blue shift for the far-red maximum. Could also absorb green light. May participate in regulating pigment synthesis like the carotenoid deinoxanthin which could protect the bacterium from intense visible light.
Publication Abstract from PubMed
Sensory proteins must relay structural signals from the sensory site over large distances to regulatory output domains. Phytochromes are a major family of red-light-sensing kinases that control diverse cellular functions in plants, bacteria and fungi. Bacterial phytochromes consist of a photosensory core and a carboxy-terminal regulatory domain. Structures of photosensory cores are reported in the resting state and conformational responses to light activation have been proposed in the vicinity of the chromophore. However, the structure of the signalling state and the mechanism of downstream signal relay through the photosensory core remain elusive. Here we report crystal and solution structures of the resting and activated states of the photosensory core of the bacteriophytochrome from Deinococcus radiodurans. The structures show an open and closed form of the dimeric protein for the activated and resting states, respectively. This nanometre-scale rearrangement is controlled by refolding of an evolutionarily conserved 'tongue', which is in contact with the chromophore. The findings reveal an unusual mechanism in which atomic-scale conformational changes around the chromophore are first amplified into an angstrom-scale distance change in the tongue, and further grow into a nanometre-scale conformational signal. The structural mechanism is a blueprint for understanding how phytochromes connect to the cellular signalling network.
Signal amplification and transduction in phytochrome photosensors.,Takala H, Bjorling A, Berntsson O, Lehtivuori H, Niebling S, Hoernke M, Kosheleva I, Henning R, Menzel A, Ihalainen JA, Westenhoff S Nature. 2014 May 8;509(7499):245-8. doi: 10.1038/nature13310. Epub 2014 Apr 30. PMID:24776794[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Takala H, Bjorling A, Berntsson O, Lehtivuori H, Niebling S, Hoernke M, Kosheleva I, Henning R, Menzel A, Ihalainen JA, Westenhoff S. Signal amplification and transduction in phytochrome photosensors. Nature. 2014 May 8;509(7499):245-8. doi: 10.1038/nature13310. Epub 2014 Apr 30. PMID:24776794 doi:http://dx.doi.org/10.1038/nature13310
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