1b23

From Proteopedia

(Difference between revisions)

Revision as of 06:12, 3 July 2019

E. coli cysteinyl-tRNA and T. aquaticus elongation factor EF-TU:GTP ternary complex

Structural highlights

1b23 is a 2 chain structure with sequence from [1] and Atcc 25104. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , ,
NonStd Res:	, , , ,
Gene:	TUFA (ATCC 25104)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[EFTU_THEAQ] This protein promotes the GTP-dependent binding of aminoacyl-tRNA to the A-site of ribosomes during protein biosynthesis.[HAMAP-Rule:MF_00118_B]

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

BACKGROUND:. The translation elongation factor EF-Tu in its GTP-bound state forms a ternary complex with any aminoacylated tRNA (aa-tRNA), except initiator tRNA and selenocysteinyl-tRNA. This complex delivers aa-tRNA to the ribosomal A site during the elongation cycle of translation. The crystal structure of the yeast Phe-tRNAPhe ternary complex with Thermus aquaticus EF-Tu-GDPNP (Phe-TC) has previously been determined as one representative of this general yet highly discriminating complex formation. RESULTS: The ternary complex of Escherichia coli Cys-tRNACys and T. aquaticus EF-Tu-GDPNP (Cys-TC) has been solved and refined at 2.6 degrees resolution. Conserved and variable features of the aa-tRNA recognition and binding by EF-Tu-GTP have been revealed by comparison with the Phe-TC structure. New tertiary interactions are observed in the tRNACys structure. A 'kissing complex' is observed in the very close crystal packing arrangement. CONCLUSIONS: The recognition of Cys-tRNACys by EF-Tu-GDPNP is restricted to the aa-tRNA motif previously identified in Phe-TC and consists of the aminoacylated 3' end, the phosphorylated 5' end and one side of the acceptor stem and T stem. The aminoacyl bond is recognized somewhat differently, yet by the same primary motif in EF-Tu, which suggests that EF-Tu adapts to subtle variations in this moiety among all aa-tRNAs. New tertiary interactions revealed by the Cys-tRNACys structure, such as a protonated C16:C59 pyrimidine pair, a G15:G48 'Levitt pair' and an s4U8:A14:A46 base triple add to the generic understanding of tRNA structure from sequence. The structure of the 'kissing complex' shows a quasicontinuous helix with a distinct shape determined by the number of base pairs.

The crystal structure of Cys-tRNACys-EF-Tu-GDPNP reveals general and specific features in the ternary complex and in tRNA.,Nissen P, Thirup S, Kjeldgaard M, Nyborg J Structure. 1999 Feb 15;7(2):143-56. PMID:10368282^[1]

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

References

↑ Nissen P, Thirup S, Kjeldgaard M, Nyborg J. The crystal structure of Cys-tRNACys-EF-Tu-GDPNP reveals general and specific features in the ternary complex and in tRNA. Structure. 1999 Feb 15;7(2):143-56. PMID:10368282

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/1b23"

@@ Line 3: / Line 3: @@
 <StructureSection load='1b23' size='340' side='right'caption='[[1b23]], [[Resolution|resolution]] 2.60&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[1b23]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B23 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1B23 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[1b23]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/ ] and [http://en.wikipedia.org/wiki/Atcc_25104 Atcc 25104]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1B23 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1B23 FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CYS:CYSTEINE'>CYS</scene>, <scene name='pdbligand=GNP:PHOSPHOAMINOPHOSPHONIC+ACID-GUANYLATE+ESTER'>GNP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr>
 <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=4SU:4-THIOURIDINE-5-MONOPHOSPHATE'>4SU</scene>, <scene name='pdbligand=5MU:5-METHYLURIDINE+5-MONOPHOSPHATE'>5MU</scene>, <scene name='pdbligand=H2U:5,6-DIHYDROURIDINE-5-MONOPHOSPHATE'>H2U</scene>, <scene name='pdbligand=MIA:2-METHYLTHIO-N6-ISOPENTENYL-ADENOSINE-5-MONOPHOSPHATE'>MIA</scene>, <scene name='pdbligand=PSU:PSEUDOURIDINE-5-MONOPHOSPHATE'>PSU</scene></td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TUFA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=271 ATCC 25104])</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=1b23 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1b23 OCA], [http://pdbe.org/1b23 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1b23 RCSB], [http://www.ebi.ac.uk/pdbsum/1b23 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1b23 ProSAT]</span></td></tr>
 </table>
@@ Line 31: / Line 32: @@
 ==See Also==
-*[[Elongation factor|Elongation factor]]
+*[[Elongation factor 3D structures|Elongation factor 3D structures]]
 == References ==
 <references/>
 __TOC__
 </StructureSection>
+[[Category: Atcc 25104]]
 [[Category: Large Structures]]
 [[Category: Kjeldgaard, M]]

1b23

From Proteopedia

Revision as of 06:12, 3 July 2019

E. coli cysteinyl-tRNA and T. aquaticus elongation factor EF-TU:GTP ternary complex

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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