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1njm

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Revision as of 05:35, 11 September 2015

The crystal structure of the 50S Large ribosomal subunit from Deinococcus radiodurans complexed with a tRNA acceptor stem mimic (ASM) and the antibiotic sparsomycin

Structural highlights

1njm is a 3 chain structure with sequence from Deinococcus radiodurans. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:
NonStd Res:
Related:	1njn, 1njo, 1njp, 1k01, 1jzx, 1jzy, 1jzz, 1k00, 1nkw
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[RL25_DEIRA] This is one of 3 proteins that mediate the attachment of the 5S rRNA onto the large ribosomal subunit. This protein has three domains. The N-terminal one is bound on the solvent face, the middle domain fills the space between the 5S rRNA and the L11 arm contacting the 23S rRNA while the C-terminal domain is on the edge of the intersubunit interface and contacts the A site. The protein conformation changes upon binding of a tRNA mimic to the A site, although the mimic does not interact directly with CTC itself, consistent with CTCs presumed role in moderating A site binding.[HAMAP-Rule:MF_01334] [RL16_DEIRA] Binds the 5S and 23S rRNAs and is also seen to make contacts with the A and P site tRNAs. Interacts with A site tRNA mimics, and is probably one of the key factors, along with a helix of the 23S rRNA, in positioning tRNA stems in the peptidyl-transferase center.[HAMAP-Rule:MF_01342]

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

Crystal structures of tRNA mimics complexed with the large ribosomal subunit of Deinococcus radiodurans indicate that remote interactions determine the precise orientation of tRNA in the peptidyl-transferase center (PTC). The PTC tolerates various orientations of puromycin derivatives and its flexibility allows the conformational rearrangements required for peptide-bond formation. Sparsomycin binds to A2602 and alters the PTC conformation. H69, the intersubunit-bridge connecting the PTC and decoding site, may also participate in tRNA placement and translocation. A spiral rotation of the 3' end of the A-site tRNA around a 2-fold axis of symmetry identified within the PTC suggests a unified ribosomal machinery for peptide-bond formation, A-to-P-site translocation, and entrance of nascent proteins into the exit tunnel. Similar 2-fold related regions, detected in all known structures of large ribosomal subunits, indicate the universality of this mechanism.

Structural basis of the ribosomal machinery for peptide bond formation, translocation, and nascent chain progression.,Bashan A, Agmon I, Zarivach R, Schluenzen F, Harms J, Berisio R, Bartels H, Franceschi F, Auerbach T, Hansen HA, Kossoy E, Kessler M, Yonath A Mol Cell. 2003 Jan;11(1):91-102. PMID:12535524^[1]

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

References

↑ Bashan A, Agmon I, Zarivach R, Schluenzen F, Harms J, Berisio R, Bartels H, Franceschi F, Auerbach T, Hansen HA, Kossoy E, Kessler M, Yonath A. Structural basis of the ribosomal machinery for peptide bond formation, translocation, and nascent chain progression. Mol Cell. 2003 Jan;11(1):91-102. PMID:12535524

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/1njm"

@@ Line 6: / Line 6: @@
 <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=PPU:PUROMYCIN-5-MONOPHOSPHATE'>PPU</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1njn|1njn]], [[1njo|1njo]], [[1njp|1njp]], [[1k01|1k01]], [[1jzx|1jzx]], [[1jzy|1jzy]], [[1jzz|1jzz]], [[1k00|1k00]], [[1nkw|1nkw]]</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=1njm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1njm OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1njm RCSB], [http://www.ebi.ac.uk/pdbsum/1njm 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=1njm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1njm OCA], [http://pdbe.org/1njm PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1njm RCSB], [http://www.ebi.ac.uk/pdbsum/1njm PDBsum]</span></td></tr>
 </table>
 == Function ==
@@ Line 28: / Line 28: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 1njm" style="background-color:#fffaf0;"></div>
 ==See Also==

1njm

From Proteopedia

Revision as of 05:35, 11 September 2015

The crystal structure of the 50S Large ribosomal subunit from Deinococcus radiodurans complexed with a tRNA acceptor stem mimic (ASM) and the antibiotic sparsomycin

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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