View source for 6qb8


==Human CCT:mLST8 complex==
<SX load='6qb8' size='340' side='right' viewer='molstar' caption='[[6qb8]], [[Resolution|resolution]] 3.97&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6qb8]] is a 16 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6QB8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6QB8 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.97&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene></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=6qb8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6qb8 OCA], [https://pdbe.org/6qb8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6qb8 RCSB], [https://www.ebi.ac.uk/pdbsum/6qb8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6qb8 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/TCPB_HUMAN TCPB_HUMAN] Component of the chaperonin-containing T-complex (TRiC), a molecular chaperone complex that assists the folding of proteins upon ATP hydrolysis (PubMed:25467444). The TRiC complex mediates the folding of WRAP53/TCAB1, thereby regulating telomere maintenance (PubMed:25467444). As part of the TRiC complex may play a role in the assembly of BBSome, a complex involved in ciliogenesis regulating transports vesicles to the cilia (PubMed:20080638). The TRiC complex plays a role in the folding of actin and tubulin (Probable).<ref>PMID:20080638</ref> <ref>PMID:25467444</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The mechanistic target of rapamycin (mTOR) kinase forms two multi-protein signaling complexes, mTORC1 and mTORC2, which are master regulators of cell growth, metabolism, survival and autophagy. Two of the subunits of these complexes are mLST8 and Raptor, beta-propeller proteins that stabilize the mTOR kinase and recruit substrates, respectively. Here we report that the eukaryotic chaperonin CCT plays a key role in mTORC assembly and signaling by folding both mLST8 and Raptor. A high resolution (4.0 A) cryo-EM structure of the human mLST8-CCT intermediate isolated directly from cells shows mLST8 in a near-native state bound to CCT deep within the folding chamber between the two CCT rings, and interacting mainly with the disordered N- and C-termini of specific CCT subunits of both rings. These findings describe a unique function of CCT in mTORC assembly and a distinct binding site in CCT for mLST8, far from those found for similar beta-propeller proteins.

Structural and functional analysis of the role of the chaperonin CCT in mTOR complex assembly.,Cuellar J, Ludlam WG, Tensmeyer NC, Aoba T, Dhavale M, Santiago C, Bueno-Carrasco MT, Mann MJ, Plimpton RL, Makaju A, Franklin S, Willardson BM, Valpuesta JM Nat Commun. 2019 Jun 28;10(1):2865. doi: 10.1038/s41467-019-10781-1. PMID:31253771<ref>PMID:31253771</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6qb8" style="background-color:#fffaf0;"></div>

==See Also==
*[[Chaperonin 3D structures|Chaperonin 3D structures]]
== References ==
<references/>
__TOC__
</SX>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Bueno-Carrasco MT]]
[[Category: Cuellar J]]
[[Category: Ludlam WG]]
[[Category: Santiago C]]
[[Category: Valpuesta JM]]
[[Category: Willardson BM]]