2znj

From Proteopedia

(Difference between revisions)

Revision as of 14:17, 11 August 2016

Crystal structure of Pyrrolysyl-tRNA synthetase from Desulfitobacterium hafniense

Structural highlights

2znj is a 3 chain structure with sequence from Desha. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Gene:	pylS (DESHA)
Activity:	Pyrrolysine--tRNA(Pyl) ligase, with EC number 6.1.1.26
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

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

Pyrrolysine (Pyl), the 22nd natural amino acid, is genetically encoded by UAG and inserted into proteins by the unique suppressor tRNA(Pyl) (ref. 1). The Methanosarcinaceae produce Pyl and express Pyl-containing methyltransferases that allow growth on methylamines. Homologous methyltransferases and the Pyl biosynthetic and coding machinery are also found in two bacterial species. Pyl coding is maintained by pyrrolysyl-tRNA synthetase (PylRS), which catalyses the formation of Pyl-tRNA(Pyl) (refs 4, 5). Pyl is not a recent addition to the genetic code. PylRS was already present in the last universal common ancestor; it then persisted in organisms that utilize methylamines as energy sources. Recent protein engineering efforts added non-canonical amino acids to the genetic code. This technology relies on the directed evolution of an 'orthogonal' tRNA synthetase-tRNA pair in which an engineered aminoacyl-tRNA synthetase (aaRS) specifically and exclusively acylates the orthogonal tRNA with a non-canonical amino acid. For Pyl the natural evolutionary process developed such a system some 3 billion years ago. When transformed into Escherichia coli, Methanosarcina barkeri PylRS and tRNA(Pyl) function as an orthogonal pair in vivo. Here we show that Desulfitobacterium hafniense PylRS-tRNA(Pyl) is an orthogonal pair in vitro and in vivo, and present the crystal structure of this orthogonal pair. The ancient emergence of PylRS-tRNA(Pyl) allowed the evolution of unique structural features in both the protein and the tRNA. These structural elements manifest an intricate, specialized aaRS-tRNA interaction surface that is highly distinct from those observed in any other known aaRS-tRNA complex; it is this general property that underlies the molecular basis of orthogonality.

Pyrrolysyl-tRNA synthetase-tRNA(Pyl) structure reveals the molecular basis of orthogonality.,Nozawa K, O'Donoghue P, Gundllapalli S, Araiso Y, Ishitani R, Umehara T, Soll D, Nureki O Nature. 2009 Feb 26;457(7233):1163-7. Epub 2008 Dec 31. PMID:19118381^[1]

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

References

↑ Nozawa K, O'Donoghue P, Gundllapalli S, Araiso Y, Ishitani R, Umehara T, Soll D, Nureki O. Pyrrolysyl-tRNA synthetase-tRNA(Pyl) structure reveals the molecular basis of orthogonality. Nature. 2009 Feb 26;457(7233):1163-7. Epub 2008 Dec 31. PMID:19118381 doi:10.1038/nature07611

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

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 1: / Line 1: @@
 ==Crystal structure of Pyrrolysyl-tRNA synthetase from Desulfitobacterium hafniense==
 <StructureSection load='2znj' size='340' side='right' caption='[[2znj]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2znj]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Desulfitobacterium_hafniense Desulfitobacterium hafniense]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ZNJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ZNJ FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2znj]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Desha Desha]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ZNJ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2ZNJ FirstGlance]. <br>
-</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">pylS ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=49338 Desulfitobacterium hafniense])</td></tr>
+</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">pylS ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=49338 DESHA])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Pyrrolysine--tRNA(Pyl)_ligase Pyrrolysine--tRNA(Pyl) ligase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=6.1.1.26 6.1.1.26] </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=2znj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2znj OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2znj RCSB], [http://www.ebi.ac.uk/pdbsum/2znj PDBsum]</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=2znj FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2znj OCA], [http://pdbe.org/2znj PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2znj RCSB], [http://www.ebi.ac.uk/pdbsum/2znj PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2znj ProSAT]</span></td></tr>
 </table>
 == Evolutionary Conservation ==
@@ Line 15: / Line 16: @@
     <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].
+</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=2znj ConSurf].
 <div style="clear:both"></div>
 <div style="background-color:#fffaf0;">
@@ Line 25: / Line 26: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 2znj" style="background-color:#fffaf0;"></div>
 ==See Also==
@@ Line 32: / Line 34: @@
 __TOC__
 </StructureSection>
-[[Category: Desulfitobacterium hafniense]]
+[[Category: Desha]]
 [[Category: Araiso, Y]]
 [[Category: Ishitani, R]]

2znj

From Proteopedia

Revision as of 14:17, 11 August 2016

Crystal structure of Pyrrolysyl-tRNA synthetase from Desulfitobacterium hafniense

Structural highlights

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox