2aar

From Proteopedia

(Difference between revisions)

Current revision

Structure of trigger factor binding domain in biologically homologous complex with eubacterial ribosome.

Structural highlights

2aar is a 4 chain structure with sequence from Deinococcus radiodurans. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 3.5Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

RL23_DEIRA One of the early assembly protein (By similarity) it binds 23S rRNA. One of the proteins that surrounds the polypeptide exit tunnel on the outside of the subunit. Forms the main docking site for trigger factor binding to the ribosome (PubMed:16091460 and PubMed:16271892).[HAMAP-Rule:MF_01369]

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

Trigger factor (TF), the first chaperone in eubacteria to encounter the emerging nascent chain, binds to the large ribosomal subunit in the vicinity of the protein exit tunnel opening and forms a sheltered folding space. Here, we present the 3.5-A crystal structure of the physiological complex of the large ribosomal subunit from the eubacterium Deinococcus radiodurans with the N-terminal domain of TF (TFa) from the same organism. For anchoring, TFa exploits a small ribosomal surface area in the vicinity of proteins L23 and L29, by using its "signature motif" as well as additional structural elements. The molecular details of TFa interactions reveal that L23 is essential for the association of TF with the ribosome and may serve as a channel of communication with the nascent chain progressing in the tunnel. L29 appears to induce a conformational change in TFa, which results in the exposure of TFa hydrophobic patches to the opening of the ribosomal exit tunnel, thus increasing its affinity for hydrophobic segments of the emerging nascent polypeptide. This observation implies that, in addition to creating a protected folding space for the emerging nascent chain, TF association with the ribosome prevents aggregation by providing a competing hydrophobic environment and may be critical for attaining the functional conformation necessary for chaperone activity.

Structure of trigger factor binding domain in biologically homologous complex with eubacterial ribosome reveals its chaperone action.,Baram D, Pyetan E, Sittner A, Auerbach-Nevo T, Bashan A, Yonath A Proc Natl Acad Sci U S A. 2005 Aug 23;102(34):12017-22. Epub 2005 Aug 9. PMID:16091460^[1]

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

References

↑ Baram D, Pyetan E, Sittner A, Auerbach-Nevo T, Bashan A, Yonath A. Structure of trigger factor binding domain in biologically homologous complex with eubacterial ribosome reveals its chaperone action. Proc Natl Acad Sci U S A. 2005 Aug 23;102(34):12017-22. Epub 2005 Aug 9. PMID:16091460

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/2aar"

@@ Line 3: / Line 3: @@
 <StructureSection load='2aar' size='340' side='right'caption='[[2aar]], [[Resolution|resolution]] 3.50&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[2aar]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Deinococcus_radiodurans Deinococcus radiodurans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2AAR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2AAR FirstGlance]. <br>
+<table><tr><td colspan='2'>[[2aar]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Deinococcus_radiodurans Deinococcus radiodurans]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2AAR OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2AAR FirstGlance]. <br>
-</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[1nkw|1nkw]]</div></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='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2aar FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2aar OCA], [https://pdbe.org/2aar PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2aar RCSB], [https://www.ebi.ac.uk/pdbsum/2aar PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2aar ProSAT]</span></td></tr>
 </table>
 == Function ==
-[[https://www.uniprot.org/uniprot/TIG_DEIRA TIG_DEIRA]] Involved in protein export. Acts as a chaperone by maintaining the newly synthesized protein in an open conformation. Functions as a peptidyl-prolyl cis-trans isomerase (By similarity). Probably changes conformation upon binding to the ribosome (maybe in particular due to interaction with L24, PubMed:16271892), exposing a hydrophobic crevice that is probably important for its chaperone activity (PubMed:16091460 and PubMed:16271892).[HAMAP-Rule:MF_00303] [[https://www.uniprot.org/uniprot/RL29_DEIRA RL29_DEIRA]] Binds the 23S rRNA. One of the proteins that surrounds the polypeptide exit tunnel on the outside of the subunit.[HAMAP-Rule:MF_00374] [[https://www.uniprot.org/uniprot/RL23_DEIRA RL23_DEIRA]] One of the early assembly protein (By similarity) it binds 23S rRNA. One of the proteins that surrounds the polypeptide exit tunnel on the outside of the subunit. Forms the main docking site for trigger factor binding to the ribosome (PubMed:16091460 and PubMed:16271892).[HAMAP-Rule:MF_01369]
+[https://www.uniprot.org/uniprot/RL23_DEIRA RL23_DEIRA] One of the early assembly protein (By similarity) it binds 23S rRNA. One of the proteins that surrounds the polypeptide exit tunnel on the outside of the subunit. Forms the main docking site for trigger factor binding to the ribosome (PubMed:16091460 and PubMed:16271892).[HAMAP-Rule:MF_01369]
 == Evolutionary Conservation ==
 [[Image:Consurf_key_small.gif|200px|right]]
@@ Line 38: / Line 38: @@
 [[Category: Deinococcus radiodurans]]
 [[Category: Large Structures]]
-[[Category: Auerbach-Nevo, T]]
+[[Category: Auerbach-Nevo T]]
-[[Category: Baram, D]]
+[[Category: Baram D]]
-[[Category: Bashan, A]]
+[[Category: Bashan A]]
-[[Category: Pyetan, E]]
+[[Category: Pyetan E]]
-[[Category: Sittner, A]]
+[[Category: Sittner A]]
-[[Category: Yonath, A]]
+[[Category: Yonath A]]
-[[Category: Cheperone]]
-[[Category: Ribosome]]
-[[Category: Trigger factor]]
-[[Category: Tunnel]]

2aar

From Proteopedia

Current revision

Structure of trigger factor binding domain in biologically homologous complex with eubacterial ribosome.

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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