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==X-RAY STRUCTURE OF TRANSLATION INITIATION FACTOR IF2/EIF5B COMPLEXED WITH GDP==
==X-RAY STRUCTURE OF TRANSLATION INITIATION FACTOR IF2/EIF5B COMPLEXED WITH GDP==
<StructureSection load='1g7s' size='340' side='right'caption='[[1g7s]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
<StructureSection load='1g7s' size='340' side='right'caption='[[1g7s]]' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1g7s]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"methanobacterium_thermoautotrophicus"_(sic)_zeikus_and_wolfe_1972 "methanobacterium thermoautotrophicus" (sic) zeikus and wolfe 1972]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G7S OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1G7S FirstGlance]. <br>
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1G7S OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1G7S FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene></td></tr>
</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=1g7s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g7s OCA], [https://pdbe.org/1g7s PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1g7s RCSB], [https://www.ebi.ac.uk/pdbsum/1g7s PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1g7s ProSAT]</span></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1g7r|1g7r]], [[1g7t|1g7t]]</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1g7s FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1g7s OCA], [http://pdbe.org/1g7s PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1g7s RCSB], [http://www.ebi.ac.uk/pdbsum/1g7s PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1g7s ProSAT]</span></td></tr>
</table>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/IF2P_METTH IF2P_METTH]] Function in general translation initiation by promoting the binding of the formylmethionine-tRNA to ribosomes. Seems to function along with eIF-2 (By similarity).
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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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=1g7s ConSurf].
</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=1g7s ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
X-ray structures of the universal translation initiation factor IF2/eIF5B have been determined in three states: free enzyme, inactive IF2/eIF5B.GDP, and active IF2/eIF5B.GTP. The "chalice-shaped" enzyme is a GTPase that facilitates ribosomal subunit joining and Met-tRNA(i) binding to ribosomes in all three kingdoms of life. The conserved core of IF2/eIF5B consists of an N-terminal G domain (I) plus an EF-Tu-type beta barrel (II), followed by a novel alpha/beta/alpha-sandwich (III) connected via an alpha helix to a second EF-Tu-type beta barrel (IV). Structural comparisons reveal a molecular lever, which amplifies a modest conformational change in the Switch 2 region of the G domain induced by Mg(2+)/GTP binding over a distance of 90 A from the G domain active center to domain IV. Mechanisms of GTPase function and ribosome binding are discussed.
X-Ray structures of the universal translation initiation factor IF2/eIF5B: conformational changes on GDP and GTP binding.,Roll-Mecak A, Cao C, Dever TE, Burley SK Cell. 2000 Nov 22;103(5):781-92. PMID:11114334<ref>PMID:11114334</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1g7s" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Burley, S K]]
[[Category: Burley SK]]
[[Category: Cao, C]]
[[Category: Cao C]]
[[Category: Dever, T E]]
[[Category: Dever TE]]
[[Category: Roll-Mecak, A]]
[[Category: Roll-Mecak A]]
[[Category: Translation]]
[[Category: Translational gtpase]]

Revision as of 14:19, 28 July 2021

X-RAY STRUCTURE OF TRANSLATION INITIATION FACTOR IF2/EIF5B COMPLEXED WITH GDPX-RAY STRUCTURE OF TRANSLATION INITIATION FACTOR IF2/EIF5B COMPLEXED WITH GDP

Structural highlights

Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

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OCA
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