2z10: Difference between revisions
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[[Image: | ==Crystal structure of putative acetyltransferase== | ||
<StructureSection load='2z10' size='340' side='right' caption='[[2z10]], [[Resolution|resolution]] 1.77Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2z10]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2Z10 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2Z10 FirstGlance]. <br> | |||
</td></tr><tr><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=IYR:3-IODO-TYROSINE'>IYR</scene></td></tr> | |||
<tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Ribosomal-protein-alanine_N-acetyltransferase Ribosomal-protein-alanine N-acetyltransferase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.3.1.128 2.3.1.128] </span></td></tr> | |||
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2z10 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2z10 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2z10 RCSB], [http://www.ebi.ac.uk/pdbsum/2z10 PDBsum], [http://www.topsan.org/Proteins/RSGI/2z10 TOPSAN]</span></td></tr> | |||
<table> | |||
== 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/z1/2z10_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/chain_selection.php?pdb_ID=2ata ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
We developed an Escherichia coli cell-based system to generate proteins containing 3-iodo-l-tyrosine at desired sites, and we used this system for structure determination by single-wavelength anomalous dispersion (SAD) phasing with the strong iodine signal. Tyrosyl-tRNA synthetase from Methanocaldococcus jannaschii was engineered to specifically recognize 3-iodo-l-tyrosine. The 1.7 A crystal structure of the engineered variant, iodoTyrRS-mj, bound with 3-iodo-l-tyrosine revealed the structural basis underlying the strict specificity for this nonnatural substrate; the iodine moiety makes van der Waals contacts with 5 residues at the binding pocket. E. coli cells expressing iodoTyrRS-mj and the suppressor tRNA were used to incorporate 3-iodo-l-tyrosine site specifically into the ribosomal protein N-acetyltransferase from Thermus thermophilus. The crystal structure of this enzyme with iodotyrosine was determined at 1.8 and 2.2 A resolutions by SAD phasing at CuKalpha and CrKalpha wavelengths, respectively. The native structure, determined by molecular replacement, revealed no significant structural distortion caused by iodotyrosine incorporation. | |||
Genetic Encoding of 3-Iodo-l-Tyrosine in Escherichia coli for Single-Wavelength Anomalous Dispersion Phasing in Protein Crystallography.,Sakamoto K, Murayama K, Oki K, Iraha F, Kato-Murayama M, Takahashi M, Ohtake K, Kobayashi T, Kuramitsu S, Shirouzu M, Yokoyama S Structure. 2009 Mar 11;17(3):335-44. PMID:19278648<ref>PMID:19278648</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
==See Also== | ==See Also== | ||
*[[Cytochrome P450|Cytochrome P450]] | *[[Cytochrome P450|Cytochrome P450]] | ||
*[[Dronpa|Dronpa]] | *[[Dronpa|Dronpa]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
</StructureSection> | |||
[[Category: Ribosomal-protein-alanine N-acetyltransferase]] | [[Category: Ribosomal-protein-alanine N-acetyltransferase]] | ||
[[Category: Thermus thermophilus]] | [[Category: Thermus thermophilus]] | ||