8SHQ

CCT G beta 5 complex closed state 12


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Visualizing the chaperone-mediated folding trajectory of the G protein beta 5 beta-propeller.

Wang, S.Sass, M.I.Kwon, Y.Ludlam, W.G.Smith, T.M.Carter, E.J.Gladden, N.E.Riggi, M.Iwasa, J.H.Willardson, B.M.Shen, P.S.

(2023) Mol Cell 83: 3852-3868.e6

  • DOI: https://doi.org/10.1016/j.molcel.2023.09.032
  • Primary Citation of Related Structures:  
    8SFE, 8SFF, 8SG8, 8SG9, 8SGC, 8SGL, 8SGQ, 8SH9, 8SHA, 8SHD, 8SHE, 8SHF, 8SHG, 8SHL, 8SHN, 8SHO, 8SHP, 8SHQ, 8SHT

  • PubMed Abstract: 

    The Chaperonin Containing Tailless polypeptide 1 (CCT) complex is an essential protein folding machine with a diverse clientele of substrates, including many proteins with β-propeller domains. Here, we determine the structures of human CCT in complex with its accessory co-chaperone, phosducin-like protein 1 (PhLP1), in the process of folding Gβ 5 , a component of Regulator of G protein Signaling (RGS) complexes. Cryoelectron microscopy (cryo-EM) and image processing reveal an ensemble of distinct snapshots that represent the folding trajectory of Gβ 5 from an unfolded molten globule to a fully folded β-propeller. These structures reveal the mechanism by which CCT directs Gβ 5 folding through initiating specific intermolecular contacts that facilitate the sequential folding of individual β sheets until the propeller closes into its native structure. This work directly visualizes chaperone-mediated protein folding and establishes that CCT orchestrates folding by stabilizing intermediates through interactions with surface residues that permit the hydrophobic core to coalesce into its folded state.


  • Organizational Affiliation

    Department of Biochemistry, School of Medicine, University of Utah, 15 N. Medical Drive East, Salt Lake City, UT 84112, USA.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Phosducin-like proteinA [auth P]301Homo sapiensMutation(s): 0 
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PHAROS:  Q13371
GTEx:  ENSG00000136940 
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UniProt GroupQ13371
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Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Guanine nucleotide-binding protein subunit beta-5B [auth N]395Homo sapiensMutation(s): 0 
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PHAROS:  O14775
GTEx:  ENSG00000069966 
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UniProt GroupO14775
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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit alphaC [auth A],
K [auth a]
536Homo sapiensMutation(s): 0 
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PHAROS:  P17987
GTEx:  ENSG00000120438 
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UniProt GroupP17987
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit betaD [auth B],
L [auth b]
526Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000166226 
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Entity ID: 5
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit deltaE [auth D],
M [auth d]
520Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000115484 
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Entity ID: 6
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit epsilonF [auth E],
N [auth e]
540Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000150753 
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Entity ID: 7
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit gammaG,
O [auth g]
528Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000163468 
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Entity ID: 8
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit eta, N-terminally processedH,
P [auth h]
528Homo sapiensMutation(s): 0 
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GTEx:  ENSG00000135624 
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Entity ID: 9
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit thetaI [auth Q],
Q [auth q]
538Homo sapiensMutation(s): 0 
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Find proteins for P50990 (Homo sapiens)
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GTEx:  ENSG00000156261 
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Entity ID: 10
MoleculeChains Sequence LengthOrganismDetailsImage
T-complex protein 1 subunit zetaJ [auth Z],
R [auth z]
527Homo sapiensMutation(s): 0 
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Find proteins for P40227 (Homo sapiens)
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GTEx:  ENSG00000146731 
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Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
ADP
Query on ADP

Download Ideal Coordinates CCD File 
BA [auth E]
CB [auth g]
EA [auth G]
FB [auth h]
HA [auth H]
BA [auth E],
CB [auth g],
EA [auth G],
FB [auth h],
HA [auth H],
IB [auth q],
KA [auth Q],
LB [auth z],
NA [auth Z],
QA [auth a],
S [auth A],
TA [auth b],
V [auth B],
WA [auth d],
Y [auth D],
ZA [auth e]
ADENOSINE-5'-DIPHOSPHATE
C10 H15 N5 O10 P2
XTWYTFMLZFPYCI-KQYNXXCUSA-N
AF3
Query on AF3

Download Ideal Coordinates CCD File 
AA [auth D]
BB [auth e]
DA [auth E]
EB [auth g]
GA [auth G]
AA [auth D],
BB [auth e],
DA [auth E],
EB [auth g],
GA [auth G],
HB [auth h],
JA [auth H],
KB [auth q],
MA [auth Q],
NB [auth z],
PA [auth Z],
SA [auth a],
U [auth A],
VA [auth b],
X [auth B],
YA [auth d]
ALUMINUM FLUORIDE
Al F3
KLZUFWVZNOTSEM-UHFFFAOYSA-K
MG
Query on MG

Download Ideal Coordinates CCD File 
AB [auth e]
CA [auth E]
DB [auth g]
FA [auth G]
GB [auth h]
AB [auth e],
CA [auth E],
DB [auth g],
FA [auth G],
GB [auth h],
IA [auth H],
JB [auth q],
LA [auth Q],
MB [auth z],
OA [auth Z],
RA [auth a],
T [auth A],
UA [auth b],
W [auth B],
XA [auth d],
Z [auth D]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 2.90 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONcryoSPARC4.2.1

Structure Validation

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Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Eye Institute (NIH/NEI)United StatesR01 EY012287

Revision History  (Full details and data files)

  • Version 1.0: 2023-10-25
    Type: Initial release
  • Version 1.1: 2023-11-01
    Changes: Database references
  • Version 1.2: 2023-11-15
    Changes: Database references