View source for 4nx2


==Crystal structure of DCYRS complexed with DCY==
<StructureSection load='4nx2' size='340' side='right' caption='[[4nx2]], [[Resolution|resolution]] 2.00&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4nx2]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4NX2 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4NX2 FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=2LT:3,5-DICHLORO-L-TYROSINE'>2LT</scene></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Tyrosine--tRNA_ligase Tyrosine--tRNA ligase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=6.1.1.1 6.1.1.1] </span></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=4nx2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4nx2 OCA], [http://pdbe.org/4nx2 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4nx2 RCSB], [http://www.ebi.ac.uk/pdbsum/4nx2 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4nx2 ProSAT]</span></td></tr>
</table>
== Function ==
[[http://www.uniprot.org/uniprot/SYY_METJA SYY_METJA]] Catalyzes the attachment of tyrosine to tRNA(Tyr) in a two-step reaction: tyrosine is first activated by ATP to form Tyr-AMP and then transferred to the acceptor end of tRNA(Tyr).<ref>PMID:10585437</ref>  
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Photo-induced electron transfer (PET) is ubiquitous for photosynthesis and fluorescent sensor design. However, genetically coded PET sensors are underdeveloped, due to the lack of methods to site-specifically install PET probes on proteins. Here we describe a family of acid and Mn(III) turn-on fluorescent protein (FP) sensors, named iLovU, based on PET and the genetic incorporation of superior PET quenchers in the fluorescent flavoprotein iLov. Using the iLovU PET sensors, we monitored the cytoplasmic acidification process, and achieved Mn(III) fluorescence sensing for the first time. The iLovU sensors should be applicable for studying pH changes in living cells, monitoring biogentic Mn(III) in the environment, and screening for efficient manganese peroxidase, which is highly desirable for lignin degradation and biomass conversion. Our work establishes a platform for many more protein PET sensors, facilitates the de novo design of metalloenzymes harboring redox active residues, and expands our ability to probe protein conformational dynamics.

Significant Expansion of Fluorescent Protein Sensing Ability through the Genetic Incorporation of Superior Photo-Induced Electron-Transfer Quenchers.,Liu X, Jiang L, Li J, Wang L, Yu Y, Zhou Q, Lv X, Gong W, Lu Y, Wang J J Am Chem Soc. 2014 Sep 10. PMID:25197956<ref>PMID:25197956</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4nx2" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Tyrosine--tRNA ligase]]
[[Category: Gao, F]]
[[Category: Gong, W]]
[[Category: Li, H]]
[[Category: Li, J]]
[[Category: Wang, J]]
[[Category: Ligase]]
[[Category: Ligase activity]]
[[Category: Nucleotide]]
[[Category: Translation]]