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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-0494 | ||||||||||||||||||||||||
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Title | hTRiC-hPFD Class3 | ||||||||||||||||||||||||
![]() | hTRiC-hPFD Class3 | ||||||||||||||||||||||||
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![]() | TRiC/CCT / PFD / ![]() ![]() ![]() ![]() | ||||||||||||||||||||||||
Function / homology | ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Similarity search - Function | ||||||||||||||||||||||||
Biological species | ![]() ![]() | ||||||||||||||||||||||||
Method | ![]() ![]() | ||||||||||||||||||||||||
![]() | Gestaut D / Roh SH | ||||||||||||||||||||||||
Funding support | ![]()
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![]() | ![]() Title: The Chaperonin TRiC/CCT Associates with Prefoldin through a Conserved Electrostatic Interface Essential for Cellular Proteostasis. Authors: Daniel Gestaut / Soung Hun Roh / Boxue Ma / Grigore Pintilie / Lukasz A Joachimiak / Alexander Leitner / Thomas Walzthoeni / Ruedi Aebersold / Wah Chiu / Judith Frydman / ![]() ![]() ![]() ![]() Abstract: Maintaining proteostasis in eukaryotic protein folding involves cooperation of distinct chaperone systems. To understand how the essential ring-shaped chaperonin TRiC/CCT cooperates with the ...Maintaining proteostasis in eukaryotic protein folding involves cooperation of distinct chaperone systems. To understand how the essential ring-shaped chaperonin TRiC/CCT cooperates with the chaperone prefoldin/GIMc (PFD), we integrate cryoelectron microscopy (cryo-EM), crosslinking-mass-spectrometry and biochemical and cellular approaches to elucidate the structural and functional interplay between TRiC/CCT and PFD. We find these hetero-oligomeric chaperones associate in a defined architecture, through a conserved interface of electrostatic contacts that serves as a pivot point for a TRiC-PFD conformational cycle. PFD alternates between an open "latched" conformation and a closed "engaged" conformation that aligns the PFD-TRiC substrate binding chambers. PFD can act after TRiC bound its substrates to enhance the rate and yield of the folding reaction, suppressing non-productive reaction cycles. Disrupting the TRiC-PFD interaction in vivo is strongly deleterious, leading to accumulation of amyloid aggregates. The supra-chaperone assembly formed by PFD and TRiC is essential to prevent toxic conformations and ensure effective cellular proteostasis. | ||||||||||||||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 49 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 38.9 KB 38.9 KB | Display Display | ![]() |
FSC (resolution estimation) | ![]() | 8.7 KB | Display | ![]() |
Images | ![]() | 119.6 KB | ||
Filedesc metadata | ![]() | 9.4 KB | ||
Others | ![]() ![]() ![]() | 40.8 MB 40.9 MB 40.9 MB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 6nrcMC ![]() 0490C ![]() 0491C ![]() 0492C ![]() 0493C ![]() 0495C ![]() 0496C ![]() 6nr8C ![]() 6nr9C ![]() 6nraC ![]() 6nrbC ![]() 6nrdC C: citing same article ( M: atomic model generated by this map |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
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Annotation | hTRiC-hPFD Class3 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.7 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
-Additional map: hTRiC-hPFD Class3, unfiltered sum map
File | emd_0494_additional.map | ||||||||||||
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Annotation | hTRiC-hPFD Class3, unfiltered sum map | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: hTRiC-hPFD Class3, half map 2
File | emd_0494_half_map_1.map | ||||||||||||
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Annotation | hTRiC-hPFD Class3, half map 2 | ||||||||||||
Projections & Slices |
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Density Histograms |
-Half map: hTRiC-hPFD Class3, half map 1
File | emd_0494_half_map_2.map | ||||||||||||
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Annotation | hTRiC-hPFD Class3, half map 1 | ||||||||||||
Projections & Slices |
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Density Histograms |
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Sample components
+Entire : hTRiC-hPFD
+Supramolecule #1: hTRiC-hPFD
+Supramolecule #2: hTRiC
+Supramolecule #3: hPFD
+Macromolecule #1: Prefoldin subunit 1
+Macromolecule #2: Prefoldin subunit 2
+Macromolecule #3: Prefoldin subunit 3
+Macromolecule #4: Prefoldin subunit 4
+Macromolecule #5: Prefoldin subunit 5
+Macromolecule #6: Prefoldin subunit 6
+Macromolecule #7: T-complex protein 1 subunit alpha
+Macromolecule #8: T-complex protein 1 subunit beta
+Macromolecule #9: T-complex protein 1 subunit gamma
+Macromolecule #10: T-complex protein 1 subunit delta
+Macromolecule #11: T-complex protein 1 subunit epsilon
+Macromolecule #12: T-complex protein 1 subunit zeta
+Macromolecule #13: T-complex protein 1 subunit eta
+Macromolecule #14: T-complex protein 1 subunit theta
-Experimental details
-Structure determination
Method | ![]() |
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Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.5 |
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Grid | Details: unspecified |
Vitrification | Cryogen name: ETHANE |
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Electron microscopy
Microscope | JEOL 3200FSC |
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Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD![]() |
Image recording | Film or detector model: GATAN K2 SUMMIT (4k x 4k) / Average electron dose: 1.0 e/Å2 |