1JY4 | pdb_00001jy4

Experimental Data Snapshot

Method: SOLUTION NMR
Conformers Calculated: 100
Conformers Submitted: 10
Selection Criteria: structures with the least restraint violations,structures with the lowest energy

wwPDB Validation 3D Report Full Report

This is version 1.4 of the entry. See complete history.

(2002) J Am Chem Soc 124: 4987-4994

PubMed Abstract:
The design and characterization of an open eight-stranded beta-sheet in a synthetic, 2-fold symmetric 70-residue peptide is described. The design strategy involves the generation of a 35-residue four-stranded beta-sheet peptide in which successive hairpins are nucleated by appropriately positioned (D)Pro-Xxx sequences. Oxidative dimerization using a single Cys residue positioned at the center of the C-terminal strand results in a disulfide-bridged eight-stranded structure. Nuclear Overhauser effects firmly establish an eight-stranded beta-sheet in methanol. In water, the outer strands are frayed, but a well-defined four-stranded beta-sheet stabilized by a disulfide bridge and a hydrophobic cluster is determined from NMR data. Comparison of the precursor peptide with the disulfide-bridged dimer reveals considerable enhancement of beta-sheet content in the latter, suggesting that the disulfide cross-link is an effective strategy for the stabilization of beta-sheets.

Organizational Affiliation

Molecular Biophysics Unit, Indian Institute of Science, Bangalore 560012, India.

Macromolecule Content

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
B4DIMER	A, B	35	N/A	Mutation(s): 0

Method: SOLUTION NMR
Conformers Calculated: 100
Conformers Submitted: 10
Selection Criteria: structures with the least restraint violations,structures with the lowest energy