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| - | [[Image:2fqn.gif|left|200px]] | |
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| - | {{Structure
| + | ==Crystal structure of the Homo sapiens cytoplasmic ribosomal decoding A site== |
| - | |PDB= 2fqn |SIZE=350|CAPTION= <scene name='initialview01'>2fqn</scene>, resolution 2.300Å
| + | <StructureSection load='2fqn' size='340' side='right'caption='[[2fqn]], [[Resolution|resolution]] 2.30Å' scene=''> |
| - | |SITE=
| + | == Structural highlights == |
| - | |LIGAND= <scene name='pdbligand=A:ADENOSINE-5'-MONOPHOSPHATE'>A</scene>, <scene name='pdbligand=C:CYTIDINE-5'-MONOPHOSPHATE'>C</scene>, <scene name='pdbligand=G:GUANOSINE-5'-MONOPHOSPHATE'>G</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NCO:COBALT+HEXAMMINE+ION'>NCO</scene>, <scene name='pdbligand=U:URIDINE-5'-MONOPHOSPHATE'>U</scene>
| + | <table><tr><td colspan='2'>[[2fqn]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FQN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2FQN FirstGlance]. <br> |
| - | |ACTIVITY=
| + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.3Å</td></tr> |
| - | |GENE=
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NCO:COBALT+HEXAMMINE(III)'>NCO</scene></td></tr> |
| - | |DOMAIN=
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2fqn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fqn OCA], [https://pdbe.org/2fqn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2fqn RCSB], [https://www.ebi.ac.uk/pdbsum/2fqn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2fqn ProSAT]</span></td></tr> |
| - | |RELATEDENTRY=
| + | </table> |
| - | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2fqn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2fqn OCA], [http://www.ebi.ac.uk/pdbsum/2fqn PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=2fqn RCSB]</span>
| + | __TOC__ |
| - | }}
| + | </StructureSection> |
| - | | + | [[Category: Large Structures]] |
| - | '''Crystal structure of the Homo sapiens cytoplasmic ribosomal decoding A site'''
| + | [[Category: Kondo J]] |
| - | | + | [[Category: Urzhumtsev A]] |
| - | | + | [[Category: Westhof E]] |
| - | ==Overview==
| + | |
| - | The decoding A site of the small ribosomal subunit is an RNA molecular switch, which monitors codon-anticodon interactions to guarantee translation fidelity. We have solved the crystal structure of an RNA fragment containing two Homo sapiens cytoplasmic A sites. Each of the two A sites presents a different conformational state. In one state, adenines A1492 and A1493 are fully bulged-out with C1409 forming a wobble-like pair to A1491. In the second state, adenines A1492 and A1493 form non-Watson-Crick pairs with C1409 and G1408, respectively while A1491 bulges out. The first state of the eukaryotic A site is, thus, basically the same as in the bacterial A site with bulging A1492 and A1493. It is the state used for recognition of the codon/anticodon complex. On the contrary, the second state of the H.sapiens cytoplasmic A site is drastically different from any of those observed for the bacterial A site without bulging A1492 and A1493.
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| - | | + | |
| - | ==About this Structure==
| + | |
| - | 2FQN is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/ ]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2FQN OCA].
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| - | | + | |
| - | ==Reference==
| + | |
| - | Two conformational states in the crystal structure of the Homo sapiens cytoplasmic ribosomal decoding A site., Kondo J, Urzhumtsev A, Westhof E, Nucleic Acids Res. 2006 Feb 1;34(2):676-85. Print 2006. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16452297 16452297]
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| - | [[Category: Protein complex]] | + | |
| - | [[Category: Kondo, J.]] | + | |
| - | [[Category: Urzhumtsev, A.]] | + | |
| - | [[Category: Westhof, E.]] | + | |
| - | [[Category: a site]]
| + | |
| - | [[Category: decoding site]]
| + | |
| - | [[Category: homo sapiens cytoplasm]]
| + | |
| - | [[Category: rna duplex]]
| + | |
| - | [[Category: rrna]]
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| - | | + | |
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Mar 31 03:06:29 2008''
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