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A small single-domain protein folds through the same pathway on and off the ribosome

Journal Article · · Proceedings of the National Academy of Sciences of the United States of America
 [1];  [2];  [3];  [2];  [4]
  1. Univ. of California, Berkeley, CA (United States). Inst. for Quantitative Biosciences (QB3)
  2. National Inst. of Health (NIH), Bethesda, MD (United States). National Inst. of Diabetes and Digestive and Kidney Disease, Lab. of Chemical Physics
  3. Univ. of California, Berkeley, CA (United States). Dept. of Molecular and Cell Biology
  4. Univ. of California, Berkeley, CA (United States). Inst. for Quantitative Biosciences (QB3), Dept. of Molecular and Cell Biology, Dept. of Chemistry
In vivo, proteins fold and function in a complex environment subject to many stresses that can modulate a protein’s energy landscape. One aspect of the environment pertinent to protein folding is the ribosome, since proteins have the opportunity to fold while still bound to the ribosome during translation. We use a combination of force and chemical denaturant (chemomechanical unfolding), as well as point mutations, to characterize the folding mechanism of the src SH3 domain both as a stalled ribosome nascent chain and free in solution. Our results indicate that src SH3 folds through the same pathway on and off the ribosome. Molecular simulations also indicate that the ribosome does not affect the folding pathway for this small protein. Taken together, we conclude that the ribosome does not alter the folding mechanism of this small protein. These results, if general, suggest the ribosome may exert a bigger influence on the folding of multidomain proteins or protein domains that can partially fold before the entire domain sequence is outside the ribosome exit tunnel
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1561900
Journal Information:
Proceedings of the National Academy of Sciences of the United States of America, Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Issue: 48 Vol. 115; ISSN 0027-8424
Publisher:
National Academy of Sciences, Washington, DC (United States)Copyright Statement
Country of Publication:
United States
Language:
English

References (56)

Topological and energetic factors: what determines the structural details of the transition state ensemble and “en-route” intermediates for protein folding? an investigation for small globular proteins journal May 2000
The folding of an enzyme journal April 1992
The Folding of Single Domain Proteins - have we Reached a Consensus? journal February 2011
Single-Molecule Chemo-Mechanical Spectroscopy Provides Structural Identity of Folding Intermediates journal March 2016
Genetically Encoded but Nonpolypeptide Prolyl-tRNA Functions in the A Site for SecM-Mediated Ribosomal Stall journal May 2006
Protein folding in the cell: challenges and progress journal February 2011
Direct Molecular Dynamics Observation of Protein Folding Transition State Ensemble journal December 2002
Single-molecule chemo-mechanical unfolding reveals multiple transition state barriers in a small single-domain protein journal April 2015
Revealing what gets buried first in protein folding journal October 2013
Microscopic interpretation of folding ϕ-values using the transition path ensemble journal March 2016
Evidence of evolutionary selection for cotranslational folding journal October 2017
Direct Observation of the Three-State Folding of a Single Protein Molecule journal September 2005
Force-dependent switch in protein unfolding pathways and transition state movements text January 2015
Protein folding and unfolding under force: Protein Folding and Unfolding Under Force journal August 2013
The ribosome in action: Tuning of translational efficiency and protein folding: The Ribosome in Action journal June 2016
The ribosome destabilizes native and non-native structures in a nascent multidomain protein: EF-G Folding on the Ribosome journal May 2017
Denaturant m values and heat capacity changes: Relation to changes in accessible surface areas of protein unfolding journal October 1995
The folding of an enzyme journal April 1992
Non-equilibrium coupling of protein structure and function to translation–elongation kinetics journal April 2018
Direct Molecular Dynamics Observation of Protein Folding Transition State Ensemble journal December 2002
[7] Optical-trap force transducer that operates by direct measurement of light momentum book January 2003
Cotranslational Protein Folding inside the Ribosome Exit Tunnel journal September 2015
Origin of Unusual φ-values in Protein Folding: Evidence Against Specific Nucleation Sites journal December 2003
Thermodynamic Characterisation of Two Transition States Along Parallel Protein Folding Pathways journal April 2004
Parallel Folding Pathways in the SH3 Domain Protein journal November 2007
The Extracellular Protein VlsE Is Destabilized Inside Cells journal January 2014
Exploring the Denatured State Ensemble by Single-Molecule Chemo-Mechanical Unfolding: The Effect of Force, Temperature, and Urea journal February 2018
Protein folding on the ribosome journal February 2010
The folding of single domain proteins—have we reached a consensus? journal February 2011
Quality over quantity: optimizing co-translational protein folding with non-‘optimal’ synonymous codons journal June 2016
Non-equilibrium coupling of protein structure and function to translation–elongation kinetics journal April 2018
Molecular Origin of Constant m -Values, Denatured State Collapse, and Residue-Dependent Transition Midpoints in Globular Proteins journal May 2009
Electrostatic Effect of the Ribosomal Surface on Nascent Polypeptide Dynamics journal April 2013
Expanding Anfinsen’s Principle: Contributions of Synonymous Codon Selection to Rational Protein Design journal January 2014
Transient ribosomal attenuation coordinates protein synthesis and co-translational folding journal February 2009
A biphasic pulling force acts on transmembrane helices during translocon-mediated membrane integration journal September 2012
A structural ensemble of a ribosome–nascent chain complex during cotranslational protein folding journal February 2016
Cotranslational folding of spectrin domains via partially structured states journal January 2017
Genetically encoded short peptide tag for versatile protein labeling by Sfp phosphopantetheinyl transferase journal October 2005
Native contacts determine protein folding mechanisms in atomistic simulations journal October 2013
Probing the protein-folding mechanism using denaturant and temperature effects on rate constants journal September 2013
Impact of reconstituted cytosol on protein stability journal November 2013
Force-dependent switch in protein unfolding pathways and transition-state movements journal January 2016
Quantitative determination of ribosome nascent chain stability journal November 2016
Folding pathway of an Ig domain is conserved on and off the ribosome journal November 2018
Effects of protein size, thermodynamic stability, and net charge on cotranslational folding on the ribosome journal September 2018
Temperature dependence of the hydrophobic interaction in protein folding. journal November 1986
The ribosome and its role in protein folding: looking through a magnifying glass journal May 2017
The origins of asymmetry in the folding transition states of protein L and protein G journal October 2002
Kinetic and structural comparison of a protein’s cotranslational folding and refolding pathways journal May 2018
The Ribosome Modulates Nascent Protein Folding journal December 2011
Mechanical force releases nascent chain-mediated ribosome arrest in vitro and in vivo journal April 2015
Models for the specific adhesion of cells to cells journal May 1978
Operon structure and cotranslational subunit association direct protein assembly in bacteria journal September 2015
Cotranslational protein folding on the ribosome monitored in real time journal November 2015
Mechanical Processes in Biochemistry journal June 2004

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The folding and unfolding behavior of ribonuclease H on the ribosome journal August 2020
Folding pathway of an Ig domain is conserved on and off the ribosome. journalarticle January 2018
Using Single-Molecule Chemo-Mechanical Unfolding to Simultaneously Probe Multiple Structural Parameters in Protein Folding journal April 2019
Multistep Protein Unfolding Scenarios from the Rupture of a Complex Metal Cluster Cd3S9 journal July 2019
Synonymous codon substitutions perturb cotranslational protein folding in vivo and impair cell fitness journal February 2020
Cotranslational Folding of Proteins on the Ribosome journal January 2020