2hhh

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[[Image:2hhh.gif|left|200px]]
 
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{{Structure
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==Crystal structure of kasugamycin bound to the 30S ribosomal subunit==
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|PDB= 2hhh |SIZE=350|CAPTION= <scene name='initialview01'>2hhh</scene>, resolution 3.35&Aring;
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<StructureSection load='2hhh' size='340' side='right'caption='[[2hhh]], [[Resolution|resolution]] 3.35&Aring;' scene=''>
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|SITE=
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== Structural highlights ==
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|LIGAND= <scene name='pdbligand=KSG:(1S,2R,3S,4R,5S,6S)-2,3,4,5,6-PENTAHYDROXYCYCLOHEXYL 2-AMINO-4-{[CARBOXY(IMINO)METHYL]AMINO}-2,3,4,6-TETRADEOXY-ALPHA-D-ARABINO-HEXOPYRANOSIDE'>KSG</scene>
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<table><tr><td colspan='2'>[[2hhh]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermus_thermophilus_HB8 Thermus thermophilus HB8]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HHH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2HHH FirstGlance]. <br>
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|ACTIVITY=
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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]] 3.35&#8491;</td></tr>
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|GENE=
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=KSG:(1S,2R,3S,4R,5S,6S)-2,3,4,5,6-PENTAHYDROXYCYCLOHEXYL+2-AMINO-4-{[CARBOXY(IMINO)METHYL]AMINO}-2,3,4,6-TETRADEOXY-ALPHA-D-ARABINO-HEXOPYRANOSIDE'>KSG</scene></td></tr>
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}}
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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=2hhh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hhh OCA], [https://pdbe.org/2hhh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2hhh RCSB], [https://www.ebi.ac.uk/pdbsum/2hhh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2hhh ProSAT], [https://www.topsan.org/Proteins/RSGI/2hhh TOPSAN]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/RS2_THET8 RS2_THET8] Spans the head-body hinge region of the 30S subunit. Is loosely associated with the 30S subunit.[HAMAP-Rule:MF_00291_B]
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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/hh/2hhh_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=2hhh ConSurf].
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<div style="clear:both"></div>
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'''Crystal structure of kasugamycin bound to the 30S ribosomal subunit'''
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==See Also==
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*[[Ribosomal protein THX 3D structures|Ribosomal protein THX 3D structures]]
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*[[Ribosome 3D structures|Ribosome 3D structures]]
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==Overview==
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__TOC__
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Kasugamycin (Ksg) specifically inhibits translation initiation of canonical but not of leaderless messenger RNAs. Ksg inhibition is thought to occur by direct competition with initiator transfer RNA. The 3.35-A structure of Ksg bound to the 30S ribosomal subunit presented here provides a structural description of two Ksg-binding sites as well as a basis for understanding Ksg resistance. Notably, neither binding position overlaps with P-site tRNA; instead, Ksg mimics codon nucleotides at the P and E sites by binding within the path of the mRNA. Coupled with biochemical experiments, our results suggest that Ksg indirectly inhibits P-site tRNA binding through perturbation of the mRNA-tRNA codon-anticodon interaction during 30S canonical initiation. In contrast, for 70S-type initiation on leaderless mRNA, the overlap between mRNA and Ksg is reduced and the binding of tRNA is further stabilized by the presence of the 50S subunit, minimizing Ksg efficacy.
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</StructureSection>
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[[Category: Large Structures]]
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==About this Structure==
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[[Category: Thermus thermophilus HB8]]
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2HHH is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HHH OCA].
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[[Category: Schluenzen F]]
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==Reference==
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The antibiotic kasugamycin mimics mRNA nucleotides to destabilize tRNA binding and inhibit canonical translation initiation., Schluenzen F, Takemoto C, Wilson DN, Kaminishi T, Harms JM, Hanawa-Suetsugu K, Szaflarski W, Kawazoe M, Shirouzu M, Nierhaus KH, Yokoyama S, Fucini P, Nat Struct Mol Biol. 2006 Oct;13(10):871-8. Epub 2006 Sep 24. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16998488 16998488]
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[[Category: Protein complex]]
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[[Category: Thermus thermophilus]]
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[[Category: Schluenzen, F.]]
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[[Category: KSG]]
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[[Category: 30]]
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[[Category: antibiotic]]
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[[Category: initiation]]
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[[Category: ribosome]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 17:17:15 2008''
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Current revision

Crystal structure of kasugamycin bound to the 30S ribosomal subunit

PDB ID 2hhh

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