1ABZ

ALPHA-T-ALPHA, A DE NOVO DESIGNED PEPTIDE, NMR, 23 STRUCTURES


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 23 

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This is version 1.2 of the entry. See complete history


Literature

Solution structure of alpha t alpha, a helical hairpin peptide of de novo design.

Fezoui, Y.Connolly, P.J.Osterhout, J.J.

(1997) Protein Sci 6: 1869-1877

  • DOI: 10.1002/pro.5560060907
  • Primary Citation of Related Structures:  
    1ABZ

  • PubMed Abstract: 
  • alpha t alpha is a 38-residue peptide designed to adopt a helical hairpin conformation in solution (Fezoui Y, Weaver DL Osterhout JJ, 1995, Protein Sci 4:286-295). A previous study of the carboxylate form of alpha t alpha by CD and two-dimensional NMR indicated that the peptide was highly helical and that the helices associated in approximately the intended orientation (Fezoui Y, Weaver DL, Osterhout JJ, 1994, Proc Natl Acad Sci USA 91:3675-3679) ...

    alpha t alpha is a 38-residue peptide designed to adopt a helical hairpin conformation in solution (Fezoui Y, Weaver DL Osterhout JJ, 1995, Protein Sci 4:286-295). A previous study of the carboxylate form of alpha t alpha by CD and two-dimensional NMR indicated that the peptide was highly helical and that the helices associated in approximately the intended orientation (Fezoui Y, Weaver DL, Osterhout JJ, 1994, Proc Natl Acad Sci USA 91:3675-3679). Here, the solution structure of alpha t alpha as determined by two-dimensional NMR is reported. A total of 266 experimentally derived distance restraints and 20 dihedral angle restraints derived from J-couplings were used. One-hundred initial structures were generated by distance geometry and refined by dynamical simulated annealing. Twenty-three of the lowest-energy structures consistent with the experimental restraints were analyzed. The results presented here show that alpha t alpha is comprised of two associating helices connected by a turn region.


    Related Citations: 
    • De Novo Design and Structural Characterization of an Alpha-Helical Hairpin Peptide: A Model System for the Study of Protein Folding Intermediates
      Fezoui, Y., Weaver, D.L., Osterhout, J.J.
      (1994) Proc Natl Acad Sci U S A 91: 3675

    Organizational Affiliation

    Rowland Institute for Science, Cambridge, Massachusetts 02142, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ALPHA-T-ALPHA A40N/AMutation(s): 0 
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 100 
  • Conformers Submitted: 23 
  • OLDERADO: 1ABZ Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-02-04
    Type: Initial release
  • Version 1.1: 2008-03-21
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance