1lva

<table><tr><td colspan='2'>[[1lva]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_35608 Atcc 35608]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LVA OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1LVA FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=Y1:YTTRIUM+ION'>Y1</scene></td></tr>

<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></td></tr>

<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">SelB(amino acids 370-634) ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=1525 ATCC 35608])</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=1lva FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lva OCA], [http://pdbe.org/1lva PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1lva RCSB], [http://www.ebi.ac.uk/pdbsum/1lva PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1lva ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/SELB_MOOTH SELB_MOOTH]] Translation factor necessary for the incorporation of selenocysteine into proteins. It probably replaces EF-Tu for the insertion of selenocysteine directed by the UGA codon. SelB binds GTP and GDP.

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== Publication Abstract from PubMed ==

SelB is an elongation factor needed for the co-translational incorporation of selenocysteine. Selenocysteine is coded by a UGA stop codon in combination with a specific downstream mRNA hairpin. In bacteria, the C-terminal part of SelB recognizes this hairpin, while the N-terminal part binds GTP and tRNA in analogy with elongation factor Tu (EF-Tu). We present the crystal structure of a C-terminal fragment of SelB (SelB-C) from Moorella thermoacetica at 2.12 A resolution, solved by a combination of selenium and yttrium multiwavelength anomalous dispersion. This 264 amino acid fragment contains the entire C-terminal extension beginning after the EF-Tu-homologous domains. SelB-C consists of four similar winged-helix domains arranged into the shape of an L. This is the first example of winged-helix domains involved in RNA binding. The location of conserved basic amino acids, together with data from the literature, define the position of the mRNA-binding site. Steric requirements indicate that a conformational change may occur upon ribosome interaction. Structural observations and data in the literature suggest that this change happens upon mRNA binding.

Crystal structure of an mRNA-binding fragment of Moorella thermoacetica elongation factor SelB.,Selmer M, Su XD EMBO J. 2002 Aug 1;21(15):4145-53. PMID:12145214<ref>PMID:12145214</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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== References ==

<references/>

[[Category: Atcc 35608]]

[[Category: Selmer, M]]

[[Category: Su, X D]]

[[Category: Translation]]

[[Category: Winged-helix]]