NMR solution structure of Pin1 WW domain mutant with beta turn mimic at position 12

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 27 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with acceptable covalent geometry 

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Evaluating beta-turn mimics as beta-sheet folding nucleators.

Fuller, A.A.Du, D.Liu, F.Davoren, J.E.Bhabha, G.Kroon, G.Case, D.A.Dyson, H.J.Powers, E.T.Wipf, P.Gruebele, M.Kelly, J.W.

(2009) Proc Natl Acad Sci U S A 106: 11067-11072

  • DOI: https://doi.org/10.1073/pnas.0813012106
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Beta-turns are common conformations that enable proteins to adopt globular structures, and their formation is often rate limiting for folding. Beta-turn mimics, molecules that replace the i + 1 and i + 2 amino acid residues of a beta-turn, are envisioned to act as folding nucleators by preorganizing the pendant polypeptide chains, thereby lowering the activation barrier for beta-sheet formation. However, the crucial kinetic experiments to demonstrate that beta-turn mimics can act as strong nucleators in the context of a cooperatively folding protein have not been reported. We have incorporated 6 beta-turn mimics simulating varied beta-turn types in place of 2 residues in an engineered beta-turn 1 or beta-bulge turn 1 of the Pin 1 WW domain, a three-stranded beta-sheet protein. We present 2 lines of kinetic evidence that the inclusion of beta-turn mimics alters beta-sheet folding rates, enabling us to classify beta-turn mimics into 3 categories: those that are weak nucleators but permit Pin WW folding, native-like nucleators, and strong nucleators. Strong nucleators accelerate folding relative to WW domains incorporating all alpha-amino acid sequences. A solution NMR structure reveals that the native Pin WW beta-sheet structure is retained upon incorporating a strong E-olefin nucleator. These beta-turn mimics can now be used to interrogate protein folding transition state structures and the 2 kinetic analyses presented can be used to assess the nucleation capacity of other beta-turn mimics.

  • Organizational Affiliation

    Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Peptidyl-prolyl cis-trans isomerase NIMA-interacting 131N/AMutation(s): 1 
UniProt & NIH Common Fund Data Resources
Find proteins for Q13526 (Homo sapiens)
Explore Q13526 
Go to UniProtKB:  Q13526
PHAROS:  Q13526
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UniProt GroupQ13526
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 27 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with acceptable covalent geometry 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-07-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2021-10-20
    Changes: Data collection, Database references, Derived calculations
  • Version 2.0: 2023-11-15
    Changes: Atomic model, Data collection, Derived calculations