This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.

Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.

2lsv

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 20:10, 1 August 2018

The NMR high resolution structure of yeast Tah1 in complex with the Hsp90 C-terminal tail

Structural highlights

2lsv is a 2 chain structure with sequence from Baker's yeast. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	2lsu
Gene:	TAH1, YCR060W, YCR60W (Baker's yeast)
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[HSP82_YEAST] Molecular chaperone that promotes the maturation, structural maintenance and proper regulation of specific target proteins involved in cell cycle control and signal transduction. Undergoes a functional cycle that is linked to its ATPase activity. The nucleotide-free form of the dimer is found in an open conformation in which the N-termini are not dimerized and the complex is ready for client protein binding. Binding of ATP induces large conformational changes, resulting in the formation of a ring-like closed structure in which the N-terminal domains associate intramolecularly with the middle domain and also dimerize with each other, stimulating their intrinsic ATPase activity and acting as a clamp on the substrate. Finally, ATP hydrolysis results in the release of the substrate. This cycle probably induces conformational changes in the client proteins, thereby causing their activation. Interacts dynamically with various co-chaperones that modulate its substrate recognition, ATPase cycle and chaperone function. Required for growth at high temperatures.^[1]

Publication Abstract from PubMed

The ubiquitous Hsp90 chaperone participates in snoRNP and RNA polymerase assembly through interaction with the R2TP complex. This complex includes the proteins Tah1, Pih1, Rvb1, and Rvb2. Tah1 bridges Hsp90 to R2TP. Its minimal TPR domain includes two TPR motifs and a capping helix. We established the high-resolution solution structures of Tah1 free and in complex with the Hsp90 C-terminal peptide. The TPR fold is similar in the free and bound forms and we show experimentally that in addition to its solvating/stabilizing role, the capping helix is essential for the recognition of the Hsp90 704EMEEVD709 motif. In addition to Lys79 and Arg83 from the carboxylate clamp, this helix bears Tyr82 forming a pi/S-CH3 interaction with Hsp90 M705 from the peptide 310 helix. The Tah1 C-terminal region is unfolded, and we demonstrate that it is essential for the recruitment of the Pih1 C-terminal domain and folds upon binding.

High-Resolution Structural Analysis Shows How Tah1 Tethers Hsp90 to the R2TP Complex.,Back R, Dominguez C, Rothe B, Bobo C, Beaufils C, Morera S, Meyer P, Charpentier B, Branlant C, Allain FH, Manival X Structure. 2013 Sep 4. pii: S0969-2126(13)00296-7. doi:, 10.1016/j.str.2013.07.024. PMID:24012479^[2]

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

References

↑ Proisy N, Sharp SY, Boxall K, Connelly S, Roe SM, Prodromou C, Slawin AM, Pearl LH, Workman P, Moody CJ. Inhibition of Hsp90 with synthetic macrolactones: synthesis and structural and biological evaluation of ring and conformational analogs of radicicol. Chem Biol. 2006 Nov;13(11):1203-15. PMID:17114002 doi:10.1016/j.chembiol.2006.09.015
↑ Back R, Dominguez C, Rothe B, Bobo C, Beaufils C, Morera S, Meyer P, Charpentier B, Branlant C, Allain FH, Manival X. High-Resolution Structural Analysis Shows How Tah1 Tethers Hsp90 to the R2TP Complex. Structure. 2013 Sep 4. pii: S0969-2126(13)00296-7. doi:, 10.1016/j.str.2013.07.024. PMID:24012479 doi:10.1016/j.str.2013.07.024

1 Structural highlights
2 Function
3 Publication Abstract from PubMed
4 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

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

@@ Line 1: / Line 1: @@
 ==The NMR high resolution structure of yeast Tah1 in complex with the Hsp90 C-terminal tail==
 <StructureSection load='2lsv' size='340' side='right' caption='[[2lsv]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2lsu|2lsu]]</td></tr>
 <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TAH1, YCR060W, YCR60W ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=559292 Baker's yeast])</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=2lsv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2lsv OCA], [http://pdbe.org/2lsv PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2lsv RCSB], [http://www.ebi.ac.uk/pdbsum/2lsv 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=2lsv FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2lsv OCA], [http://pdbe.org/2lsv PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2lsv RCSB], [http://www.ebi.ac.uk/pdbsum/2lsv PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2lsv ProSAT]</span></td></tr>
 </table>
 == Function ==

2lsv

From Proteopedia

Revision as of 20:10, 1 August 2018

The NMR high resolution structure of yeast Tah1 in complex with the Hsp90 C-terminal tail

Structural highlights

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox