3bbo

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{{Large structure}}
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==Homology model for the Spinach chloroplast 50S subunit fitted to 9.4A cryo-EM map of the 70S chlororibosome==
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{{STRUCTURE_3bbo| PDB=3bbo | SCENE= }}
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<StructureSection load='3bbo' size='340' side='right' caption='[[3bbo]], [[Resolution|resolution]] 9.40&Aring;' scene=''>
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===Homology model for the Spinach chloroplast 50S subunit fitted to 9.4A cryo-EM map of the 70S chlororibosome===
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== Structural highlights ==
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{{ABSTRACT_PUBMED_18042701}}
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<table><tr><td colspan='2'>[[3bbo]] is a 32 chain structure with sequence from [http://en.wikipedia.org/wiki/Spinacia_oleracea Spinacia oleracea]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BBO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3BBO FirstGlance]. <br>
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</td></tr><tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3bbn|3bbn]]</td></tr>
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<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3bbo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3bbo OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3bbo RCSB], [http://www.ebi.ac.uk/pdbsum/3bbo PDBsum]</span></td></tr>
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<table>
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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/bb/3bbo_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/chain_selection.php?pdb_ID=2ata ConSurf].
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<div style="clear:both"></div>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Protein synthesis in the chloroplast is carried out by chloroplast ribosomes (chloro-ribosome) and regulated in a light-dependent manner. Chloroplast or plastid ribosomal proteins (PRPs) generally are larger than their bacterial counterparts, and chloro-ribosomes contain additional plastid-specific ribosomal proteins (PSRPs); however, it is unclear to what extent these proteins play structural or regulatory roles during translation. We have obtained a three-dimensional cryo-EM map of the spinach 70S chloro-ribosome, revealing the overall structural organization to be similar to bacterial ribosomes. Fitting of the conserved portions of the x-ray crystallographic structure of the bacterial 70S ribosome into our cryo-EM map of the chloro-ribosome reveals the positions of PRP extensions and the locations of the PSRPs. Surprisingly, PSRP1 binds in the decoding region of the small (30S) ribosomal subunit, in a manner that would preclude the binding of messenger and transfer RNAs to the ribosome, suggesting that PSRP1 is a translation factor rather than a ribosomal protein. PSRP2 and PSRP3 appear to structurally compensate for missing segments of the 16S rRNA within the 30S subunit, whereas PSRP4 occupies a position buried within the head of the 30S subunit. One of the two PSRPs in the large (50S) ribosomal subunit lies near the tRNA exit site. Furthermore, we find a mass of density corresponding to chloro-ribosome recycling factor; domain II of this factor appears to interact with the flexible C-terminal domain of PSRP1. Our study provides evolutionary insights into the structural and functional roles that the PSRPs play during protein synthesis in chloroplasts.
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==About this Structure==
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Cryo-EM study of the spinach chloroplast ribosome reveals the structural and functional roles of plastid-specific ribosomal proteins.,Sharma MR, Wilson DN, Datta PP, Barat C, Schluenzen F, Fucini P, Agrawal RK Proc Natl Acad Sci U S A. 2007 Dec 4;104(49):19315-20. Epub 2007 Nov 27. PMID:18042701<ref>PMID:18042701</ref>
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[[3bbo]] is a 32 chain structure with sequence from [http://en.wikipedia.org/wiki/Spinacia_oleracea Spinacia oleracea]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3BBO OCA].
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==See Also==
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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*[[Ribosomal protein L1|Ribosomal protein L1]]
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</div>
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*[[Ribosomal protein L11|Ribosomal protein L11]]
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*[[Ribosomal protein L13|Ribosomal protein L13]]
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*[[Ribosomal protein L14|Ribosomal protein L14]]
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*[[Ribosomal protein L15|Ribosomal protein L15]]
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*[[Ribosomal protein L16|Ribosomal protein L16]]
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*[[Ribosomal protein L17|Ribosomal protein L17]]
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*[[Ribosomal protein L18|Ribosomal protein L18]]
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*[[Ribosomal protein L19|Ribosomal protein L19]]
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*[[Ribosomal protein L2|Ribosomal protein L2]]
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*[[Ribosomal protein L20|Ribosomal protein L20]]
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*[[Ribosomal protein L21|Ribosomal protein L21]]
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*[[Ribosomal protein L22|Ribosomal protein L22]]
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*[[Ribosomal protein L23|Ribosomal protein L23]]
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*[[Ribosomal protein L24|Ribosomal protein L24]]
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*[[Ribosomal protein L27|Ribosomal protein L27]]
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*[[Ribosomal protein L28|Ribosomal protein L28]]
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*[[Ribosomal protein L29|Ribosomal protein L29]]
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*[[Ribosomal protein L3|Ribosomal protein L3]]
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*[[Ribosomal protein L30|Ribosomal protein L30]]
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*[[Ribosomal protein L31|Ribosomal protein L31]]
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*[[Ribosomal protein L32|Ribosomal protein L32]]
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*[[Ribosomal protein L33|Ribosomal protein L33]]
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*[[Ribosomal protein L34|Ribosomal protein L34]]
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*[[Ribosomal protein L35|Ribosomal protein L35]]
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*[[Ribosomal protein L36|Ribosomal protein L36]]
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*[[Ribosomal protein L4|Ribosomal protein L4]]
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*[[Ribosomal protein L5|Ribosomal protein L5]]
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*[[Ribosomal protein L6|Ribosomal protein L6]]
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*[[Ribosomal protein L9|Ribosomal protein L9]]
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==Reference==
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==See Also==
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<ref group="xtra">PMID:018042701</ref><references group="xtra"/>
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*[[Ribosome 3D structures|Ribosome 3D structures]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
[[Category: Spinacia oleracea]]
[[Category: Spinacia oleracea]]
[[Category: Agrawal, R K.]]
[[Category: Agrawal, R K.]]

Revision as of 21:18, 2 October 2014

Homology model for the Spinach chloroplast 50S subunit fitted to 9.4A cryo-EM map of the 70S chlororibosome

3bbo, resolution 9.40Å

Drag the structure with the mouse to rotate

Proteopedia Page Contributors and Editors (what is this?)

OCA

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