2KBU

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 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

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.USA 106: 11067-11072

  • DOI: 10.1073/pnas.0813012106

  • 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 envisi ...

    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.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Peptidyl-prolyl cis-trans isomerase NIMA-interacting 1
A
31Homo sapiensMutation(s): 1 
Gene Names: PIN1
EC: 5.2.1.8
Find proteins for Q13526 (Homo sapiens)
Go to Gene View: PIN1
Go to UniProtKB:  Q13526
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CFD
Query on CFD
A
NON-POLYMERC8 H15 N O

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Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 27 
  • Conformers Submitted: 15 
  • Selection Criteria: structures with acceptable covalent geometry 
  • Olderado: 2KBU Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-07-07
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance