1efm

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[[Image:1efm.jpg|left|200px]]<br /><applet load="1efm" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="1efm, resolution 2.7&Aring;" />
 
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'''STRUCTURE OF THE GDP DOMAIN OF EF-TU AND LOCATION OF THE AMINO ACIDS HOMOLOGOUS TO RAS ONCOGENE PROTEINS'''<br />
 
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==Overview==
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==STRUCTURE OF THE GDP DOMAIN OF EF-TU AND LOCATION OF THE AMINO ACIDS HOMOLOGOUS TO RAS ONCOGENE PROTEINS==
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A 2.7 angstrom resolution x-ray diffraction analysis of a trypsin-modified form of the Escherichia coli elongation factor Tu reveals that the GDP-binding domain has a structure similar to that of other nucleotide-binding proteins. The GDP ligand is located at the COOH-terminal end of the beta sheet and is linked to the protein via a Mg2+ ion salt bridge. The location of the guanine ring is unusual; the purine ring is located on the outer edge of the domain, not deep within a hydrophobic pocket. The amino acids from Pro10 to Arg44 and from Gly59 to Glu190 have been assigned to the electron density with computer graphic techniques, and the resulting model is consistent with all known biochemical data. An analysis of the structure reveals that four regions of the amino acid sequence that are homologous with the family of ras oncogene proteins, termed p21, are located in the vicinity of the GDP-binding site, and most of the invariant amino acids shared by the proteins interact directly with the GDP ligand.
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<StructureSection load='1efm' size='340' side='right'caption='[[1efm]], [[Resolution|resolution]] 2.70&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1efm]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EFM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1EFM FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.7&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1efm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1efm OCA], [https://pdbe.org/1efm PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1efm RCSB], [https://www.ebi.ac.uk/pdbsum/1efm PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1efm ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/EFTU2_ECOLI EFTU2_ECOLI] This protein promotes the GTP-dependent binding of aminoacyl-tRNA to the A-site of ribosomes during protein biosynthesis.[HAMAP-Rule:MF_00118] May play an important regulatory role in cell growth and in the bacterial response to nutrient deprivation.[HAMAP-Rule:MF_00118]
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ef/1efm_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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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=1efm ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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1EFM is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] with <scene name='pdbligand=MG:'>MG</scene> and <scene name='pdbligand=GDP:'>GDP</scene> as [http://en.wikipedia.org/wiki/ligands ligands]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1EFM OCA].
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*[[Elongation factor 3D structures|Elongation factor 3D structures]]
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__TOC__
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==Reference==
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</StructureSection>
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Structure of the GDP domain of EF-Tu and location of the amino acids homologous to ras oncogene proteins., Jurnak F, Science. 1985 Oct 4;230(4721):32-6. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=3898365 3898365]
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[[Category: Escherichia coli]]
[[Category: Escherichia coli]]
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[[Category: Single protein]]
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[[Category: Large Structures]]
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[[Category: Jurnak, F.]]
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[[Category: Jurnak F]]
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[[Category: GDP]]
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[[Category: MG]]
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[[Category: elongation factor]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 12:27:11 2008''
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Current revision

STRUCTURE OF THE GDP DOMAIN OF EF-TU AND LOCATION OF THE AMINO ACIDS HOMOLOGOUS TO RAS ONCOGENE PROTEINS

PDB ID 1efm

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