1jy4

B4DIMER: A DE NOVO DESIGNED EIGHT-STRANDED BETA-SHEET ASSEMBLED USING A DISULFIDE BOND

spinqualitylabelsall models 1jy4 Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1jy4 is a 2 chain structure. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR, 10 models Ligands: DPR Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed 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. Design and construction of an open multistranded beta-sheet polypeptide stabilized by a disulfide bridge.,Venkatraman J, Nagana Gowda GA, Balaram P J Am Chem Soc. 2002 May 8;124(18):4987-94. PMID:11982362 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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