View source for 1xbi


==High resolution structure of Methanocaldococcus jannaschii L7AE==
<StructureSection load='1xbi' size='340' side='right'caption='[[1xbi]], [[Resolution|resolution]] 1.45&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[1xbi]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Methanocaldococcus_jannaschii Methanocaldococcus jannaschii]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1XBI OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1XBI 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]] 1.45&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=EPE:4-(2-HYDROXYETHYL)-1-PIPERAZINE+ETHANESULFONIC+ACID'>EPE</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=1xbi FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1xbi OCA], [https://pdbe.org/1xbi PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1xbi RCSB], [https://www.ebi.ac.uk/pdbsum/1xbi PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1xbi ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/RL7A_METJA RL7A_METJA] Multifunctional RNA-binding protein that recognizes the K-turn motif in ribosomal RNA, the RNA component of RNase P, box H/ACA, box C/D and box C'/D' sRNAs.
== 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/xb/1xbi_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=1xbi ConSurf].
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Archaeal ribosomal protein L7Ae is a multifunctional RNA-binding protein that recognizes the K-turn motif in ribosomal, box H/ACA, and box C/D sRNAs. The crystal structure of Methanocaldococcus jannaschii L7Ae has been determined to 1.45 A, and L7Ae's amino acid composition, evolutionary conservation, functional characteristics, and structural details have been analyzed. Comparison of the L7Ae structure to those of a number of related proteins with diverse functions has revealed significant structural homology which suggests that this protein fold is an ancient RNA-binding motif. Notably, the free M. jannaschii L7Ae structure is essentially identical to that with RNA bound, suggesting that RNA binding occurs through an induced-fit interaction. Circular dichroism experiments show that box C/D and C'/D' RNA motifs undergo conformational changes when magnesium or the L7Ae protein is added, corroborating the induced-fit model for L7Ae-box C/D RNA interactions.

The crystal structure of the Methanocaldococcus jannaschii multifunctional L7Ae RNA-binding protein reveals an induced-fit interaction with the box C/D RNAs.,Suryadi J, Tran EJ, Maxwell ES, Brown BA 2nd Biochemistry. 2005 Jul 19;44(28):9657-72. PMID:16008351<ref>PMID:16008351</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1xbi" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Methanocaldococcus jannaschii]]
[[Category: Brown II BA]]
[[Category: Lieberman DV]]
[[Category: Maxwell ES]]
[[Category: Suryadi J]]
[[Category: Tran EJ]]