2nqp

From Proteopedia

(Difference between revisions)

Current revision

Crystal structure of pseudoudirinde synthase TruA in complex with leucyl tRNA

Structural highlights

2nqp is a 5 chain structure with sequence from Escherichia coli and Escherichia coli K-12. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 3.5Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

TRUA_ECOLI Formation of pseudouridine at positions 38, 39 and 40 in the anticodon stem and loop of transfer RNAs.^[1]

Evolutionary Conservation

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

Publication Abstract from PubMed

Translational accuracy and efficiency depend upon modification of uridines in the tRNA anticodon stem loop (ASL) by a highly conserved pseudouridine synthase TruA. TruA specifically modifies uridines at positions 38, 39, and/or 40 of tRNAs with highly divergent sequences and structures through a poorly characterized mechanism that differs from previously studied RNA-modifying enzymes. The molecular basis for the site and substrate "promiscuity" was studied by determining the crystal structures of E. coli TruA in complex with two different leucyl tRNAs in conjunction with functional assays and computer simulation. The structures capture three stages of the TruA*tRNA reaction, revealing the mechanism by which TruA selects the target site. We propose that TruA utilizes the intrinsic flexibility of the ASL for site promiscuity and also to select against intrinsically stable tRNAs to avoid their overstabilization through pseudouridylation, thereby maintaining the balance between the flexibility and stability required for its biological function.

How U38, 39, and 40 of many tRNAs become the targets for pseudouridylation by TruA.,Hur S, Stroud RM Mol Cell. 2007 Apr 27;26(2):189-203. PMID:17466622^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Hur S, Stroud RM. How U38, 39, and 40 of many tRNAs become the targets for pseudouridylation by TruA. Mol Cell. 2007 Apr 27;26(2):189-203. PMID:17466622 doi:10.1016/j.molcel.2007.02.027
↑ Hur S, Stroud RM. How U38, 39, and 40 of many tRNAs become the targets for pseudouridylation by TruA. Mol Cell. 2007 Apr 27;26(2):189-203. PMID:17466622 doi:10.1016/j.molcel.2007.02.027

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/2nqp"

Categories: Escherichia coli | Escherichia coli K-12 | Large Structures | Hur S | Stroud RM

@@ Line 3: / Line 3: @@
 <StructureSection load='2nqp' size='340' side='right'caption='[[2nqp]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2nqp]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Ecoli Ecoli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2NQP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2NQP FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2nqp]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli] and [https://en.wikipedia.org/wiki/Escherichia_coli_K-12 Escherichia coli K-12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2NQP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2NQP FirstGlance]. <br>
-</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene></td></tr>
+</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.5&#8491;</td></tr>
-<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1dj0|1dj0]], [[2nr0|2nr0]], [[2nre|2nre]]</div></td></tr>
+<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=K:POTASSIUM+ION'>K</scene></td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">truA ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 ECOLI])</td></tr>
-<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/tRNA_pseudouridine(38-40)_synthase tRNA pseudouridine(38-40) synthase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.4.99.12 5.4.99.12] </span></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=2nqp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2nqp OCA], [https://pdbe.org/2nqp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2nqp RCSB], [https://www.ebi.ac.uk/pdbsum/2nqp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2nqp ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/TRUA_ECOLI TRUA_ECOLI]] Formation of pseudouridine at positions 38, 39 and 40 in the anticodon stem and loop of transfer RNAs.<ref>PMID:17466622</ref>
+[https://www.uniprot.org/uniprot/TRUA_ECOLI TRUA_ECOLI] Formation of pseudouridine at positions 38, 39 and 40 in the anticodon stem and loop of transfer RNAs.<ref>PMID:17466622</ref>
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 40: / Line 38: @@
 __TOC__
 </StructureSection>
-[[Category: Ecoli]]
+[[Category: Escherichia coli]]
+[[Category: Escherichia coli K-12]]
 [[Category: Large Structures]]
-[[Category: Hur, S]]
+[[Category: Hur S]]
-[[Category: Stroud, R M]]
+[[Category: Stroud RM]]
-[[Category: Anticodon stem loop]]
-[[Category: Isomerase-rna complex]]
-[[Category: Multisite specificity]]
-[[Category: Pseudouridine synthase]]
-[[Category: Trna]]

2nqp

From Proteopedia

Current revision

Crystal structure of pseudoudirinde synthase TruA in complex with leucyl tRNA

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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