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[[Image:1ze1.gif|left|200px]]
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{{STRUCTURE_1ze1|  PDB=1ze1  |  SCENE=  }}
'''Conformational Change of Pseudouridine 55 Synthase upon Its Association with RNA Substrate'''


==Conformational Change of Pseudouridine 55 Synthase upon Its Association with RNA Substrate==
<StructureSection load='1ze1' size='340' side='right'caption='[[1ze1]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1ze1]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZE1 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1ZE1 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.9&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></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=1ze1 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ze1 OCA], [https://pdbe.org/1ze1 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1ze1 RCSB], [https://www.ebi.ac.uk/pdbsum/1ze1 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1ze1 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/TRUB_THEMA TRUB_THEMA] Responsible for synthesis of pseudouridine from uracil-55 in the psi GC loop of transfer RNAs (By similarity).
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ze/1ze1_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=1ze1 ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Pseudouridine 55 synthase (Psi55S) catalyzes isomerization of uridine (U) to pseudouridine (Psi) at position 55 in transfer RNA. The crystal structures of Thermotoga maritima Psi55S, and its complex with RNA, have been determined at 2.9 and 3.0 A resolutions, respectively. Structural comparisons with other families of pseudouridine synthases (PsiS) indicate that Psi55S may acquire its ability to recognize a stem-loop RNA substrate by two insertions of polypeptides into the PsiS core. The structure of apo-Psi55S reveals that these two insertions interact with each other. However, association with RNA substrate induces substantial conformational change in one of the insertions, resulting in disruption of interaction between insertions and association of both insertions with the RNA substrate. Specific interactions between two insertions, as well as between the insertions and the RNA substrate, account for the molecular basis of the conformational change.


==Overview==
Conformational change of pseudouridine 55 synthase upon its association with RNA substrate.,Phannachet K, Huang RH Nucleic Acids Res. 2004 Feb 27;32(4):1422-9. Print 2004. PMID:14990747<ref>PMID:14990747</ref>
Pseudouridine 55 synthase (Psi55S) catalyzes isomerization of uridine (U) to pseudouridine (Psi) at position 55 in transfer RNA. The crystal structures of Thermotoga maritima Psi55S, and its complex with RNA, have been determined at 2.9 and 3.0 A resolutions, respectively. Structural comparisons with other families of pseudouridine synthases (PsiS) indicate that Psi55S may acquire its ability to recognize a stem-loop RNA substrate by two insertions of polypeptides into the PsiS core. The structure of apo-Psi55S reveals that these two insertions interact with each other. However, association with RNA substrate induces substantial conformational change in one of the insertions, resulting in disruption of interaction between insertions and association of both insertions with the RNA substrate. Specific interactions between two insertions, as well as between the insertions and the RNA substrate, account for the molecular basis of the conformational change.


==About this Structure==
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
1ZE1 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1ZE1 OCA].
</div>
<div class="pdbe-citations 1ze1" style="background-color:#fffaf0;"></div>


==Reference==
==See Also==
Conformational change of pseudouridine 55 synthase upon its association with RNA substrate., Phannachet K, Huang RH, Nucleic Acids Res. 2004 Feb 27;32(4):1422-9. Print 2004. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/14990747 14990747]
*[[Pseudouridine synthase 3D structures|Pseudouridine synthase 3D structures]]
[[Category: Pseudouridylate synthase]]
== References ==
[[Category: Single protein]]
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Thermotoga maritima]]
[[Category: Thermotoga maritima]]
[[Category: Huang, R H.]]
[[Category: Huang RH]]
[[Category: Phannachet, K.]]
[[Category: Phannachet K]]
[[Category: Rna modification enzyme]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 17:30:54 2008''
Retrieved from "https://proteopedia.org/1ze1"