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1rsc

From Proteopedia

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[[Image:1rsc.gif|left|200px]]<br />
 
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<applet load="1rsc" size="450" color="white" frame="true" align="right" spinBox="true"
 
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caption="1rsc, resolution 2.3&Aring;" />
 
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'''STRUCTURE OF AN EFFECTOR INDUCED INACTIVATED STATE OF RIBULOSE BISPHOSPHATE CARBOXYLASE(SLASH)OXYGENASE: THE BINARY COMPLEX BETWEEN ENZYME AND XYLULOSE BISPHOSPHATE'''<br />
 
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==Overview==
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==STRUCTURE OF AN EFFECTOR INDUCED INACTIVATED STATE OF RIBULOSE BISPHOSPHATE CARBOXYLASE(SLASH)OXYGENASE: THE BINARY COMPLEX BETWEEN ENZYME AND XYLULOSE BISPHOSPHATE==
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BACKGROUND: Ribulose 1,5-bisphosphate carboxylase/oxygenase (rubisco), catalyzes the addition of CO2 to ribulose 1,5-bisphosphate in all, photosynthetic organisms. During catalysis, the bisphosphate is depleted, by reactions other than carboxylation and some of the products are potent, inhibitors of rubisco. We have used one of these, xylulose, 1,5-bisphosphate as an analogue of the natural substrate and, co-crystallized it with the enzyme. RESULTS: We have solved the crystal, structure of Synechococcus rubisco with bound xylulose 1,5-bisphosphate to, 2.3 A and compared it with the previously solved 2'-carboxylarabinitol, 1,5-bisphosphate (2CABP) enzyme quaternary complex. Unlike 2CABP, xylulose, 1,5-bisphosphate forms a binary complex with no activating CO2 or, essential metal present. Five flexible elements that restrict access to, the active site in the 2CABP complex also close off the active site in the, xylulose 1,5-bisphosphate complex, stabilized by interactions with the, hydrated form of the analogue. CONCLUSIONS: Xylulose 1,5-bisphosphate, induces closure of critical loops of the protein without essential, cofactors resident at the active site. In the case of rubisco in one, species, catalysis is completely inhibited.
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<StructureSection load='1rsc' size='340' side='right'caption='[[1rsc]], [[Resolution|resolution]] 2.30&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1rsc]] is a 16 chain structure with sequence from [https://en.wikipedia.org/wiki/Synechococcus_elongatus_PCC_6301 Synechococcus elongatus PCC 6301]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RSC OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RSC FirstGlance]. <br>
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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]] 2.3&#8491;</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=XBP:XYLULOSE-1,5-BISPHOSPHATE'>XBP</scene></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=1rsc FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rsc OCA], [https://pdbe.org/1rsc PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rsc RCSB], [https://www.ebi.ac.uk/pdbsum/1rsc PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rsc ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/RBL_SYNP6 RBL_SYNP6] RuBisCO catalyzes two reactions: the carboxylation of D-ribulose 1,5-bisphosphate, the primary event in carbon dioxide fixation, as well as the oxidative fragmentation of the pentose substrate in the photorespiration process. Both reactions occur simultaneously and in competition at the same active site.[HAMAP-Rule:MF_01338]
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/rs/1rsc_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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=1rsc ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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1RSC is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Synechococcus_sp. Synechococcus sp.] with XBP as [http://en.wikipedia.org/wiki/ligand ligand]. Active as [http://en.wikipedia.org/wiki/Ribulose-bisphosphate_carboxylase Ribulose-bisphosphate carboxylase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=4.1.1.39 4.1.1.39] Structure known Active Site: 1. Full crystallographic information is available from [http://ispc.weizmann.ac.il/oca-bin/ocashort?id=1RSC OCA].
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*[[RuBisCO 3D structures|RuBisCO 3D structures]]
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__TOC__
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==Reference==
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</StructureSection>
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Structure of an effector-induced inactivated state of ribulose 1,5-bisphosphate carboxylase/oxygenase: the binary complex between enzyme and xylulose 1,5-bisphosphate., Newman J, Gutteridge S, Structure. 1994 Jun 15;2(6):495-502. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=7922027 7922027]
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[[Category: Large Structures]]
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[[Category: Protein complex]]
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[[Category: Synechococcus elongatus PCC 6301]]
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[[Category: Ribulose-bisphosphate carboxylase]]
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[[Category: Gutteridge S]]
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[[Category: Synechococcus sp.]]
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[[Category: Newman J]]
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[[Category: Gutteridge, S.]]
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[[Category: Newman, J.]]
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[[Category: XBP]]
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[[Category: lyase (carbon-carbon)]]
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''Page seeded by [http://ispc.weizmann.ac.il/oca OCA ] on Mon Nov 5 14:56:46 2007''
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Current revision

STRUCTURE OF AN EFFECTOR INDUCED INACTIVATED STATE OF RIBULOSE BISPHOSPHATE CARBOXYLASE(SLASH)OXYGENASE: THE BINARY COMPLEX BETWEEN ENZYME AND XYLULOSE BISPHOSPHATE

PDB ID 1rsc

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