Search Results - "Raja, K. Muruga Poopathi"
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Specific Inhibition of β-Secretase Processing of the Alzheimer Disease Amyloid Precursor Protein
Published in Cell reports (Cambridge) (08-03-2016)“…Development of disease-modifying therapeutics is urgently needed for treating Alzheimer disease (AD). AD is characterized by toxic β-amyloid (Aβ) peptides…”
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Polypeptide Helices in Hybrid Peptide Sequences
Published in Journal of the American Chemical Society (30-11-2005)“…A new class of polypeptide helices in hybrid sequences containing α-, β-, and γ-residues is described. The molecular conformations in crystals determined for…”
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Engineering polypeptide folding through trans double bonds: transformation of miniature β-meanders to hybrid helices
Published in Chemical communications (Cambridge, England) (07-09-2015)“…Utilization of conjugated double bonds to engineer the novel folded miniature β-meander type structures, single step transformation of miniature β-meanders…”
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Non-classical Helices with cis Carbon-Carbon Double Bonds in the Backbone: Structural Features of α,γ-Hybrid Peptide Foldamers
Published in Angewandte Chemie International Edition (27-06-2016)“…The impact of geometrically constrained cis α,β‐unsaturated γ‐amino acids on the folding of α,γ‐hybrid peptides was investigated. Structure analysis in single…”
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Modulating the Structural Properties of α,γ‐Hybrid Peptides by α‐Amino Acid Residues: Uniform 12‐Helix Versus “Mixed” 12/10‐Helix
Published in Chemistry : a European journal (21-11-2017)“…The most important natural α‐ and 310‐helices are stabilized by unidirectional intramolecular hydrogen bonds along the helical cylinder. In contrast, we report…”
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Structural Dimorphism of Achiral α,γ‐Hybrid Peptide Foldamers: Coexistence of 12‐ and 15/17‐Helices
Published in Chemistry : a European journal (13-03-2017)“…Here, novel 12‐helices in α,γ‐hybrid peptides composed of achiral α‐aminoisobutyric acid (Aib) and 4‐aminoisocaproic acid (Aic, doubly homologated Aib)…”
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Design of Stable β‑Hairpin Mimetics through Backbone Disulfide Bonds
Published in Organic letters (16-01-2015)“…The synthesis and utilization of novel thiostatines (β-SH-substituted γ-amino acids) in the design of backbone-disulfide-stabilized β-hairpin mimetics,…”
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Synthesis and Structural Investigations of Functionalizable Hybrid β-Hairpin
Published in Organic letters (02-09-2011)“…The solution and solid state conformations of a designed β-hairpin containing functionalizable α,β-unsaturated γ-amino acids at the antiparallel β-strands and…”
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Structural studies of model peptides containing beta-, gamma- and delta-amino acids
Published in Organic & biomolecular chemistry (01-01-2006)“…The crystal structures of five model peptides Piv-Pro-Gly-NHMe (1), Piv-Pro-betaGly-NHMe (2), Piv-Pro-betaGly-OMe (3), Piv-Pro-deltaAva-OMe (4) and…”
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Stereochemistry of gabapentin and several derivatives: Solid state conformations and solution equilibria
Published in Current science (Bangalore) (10-10-2003)“…Gabapentin (1-(aminomethyl)cycloheaxaneacetic acid; Gpn) is a widely used anti-epileptic drug. The target site of action of Gpn remains controversial. Gpn can…”
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Modulating the Structural Properties of [alpha],[gamma]-Hybrid Peptides by [alpha]-Amino Acid Residues: Uniform 12-Helix Versus "Mixed" 12/10-Helix
Published in Chemistry : a European journal (21-11-2017)“…The most important natural [alpha]- and 310-helices are stabilized by unidirectional intramolecular hydrogen bonds along the helical cylinder. In contrast, we…”
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Structural Dimorphism of Achiral [alpha],[gamma]-Hybrid Peptide Foldamers: Coexistence of 12- and 15/17-Helices
Published in Chemistry : a European journal (13-03-2017)“…Here, novel 12-helices in [alpha],[gamma]-hybrid peptides composed of achiral [alpha]-aminoisobutyric acid (Aib) and 4-aminoisocaproic acid (Aic, doubly…”
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Non-classical Helices with cis Carbon-Carbon Double Bonds in the Backbone: Structural Features of [alpha],[gamma]-Hybrid Peptide Foldamers
Published in Angewandte Chemie International Edition (27-06-2016)“…The impact of geometrically constrained cis [alpha],[beta]-unsaturated [gamma]-amino acids on the folding of [alpha],[gamma]-hybrid peptides was investigated…”
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Non-classical Helices with cis Carbon-Carbon Double Bonds in the Backbone: Structural Features of [alpha],[gamma]-Hybrid Peptide Foldamers
Published in Angewandte Chemie (27-06-2016)“…The impact of geometrically constrained cis [alpha],[beta]-unsaturated [gamma]-amino acids on the folding of [alpha],[gamma]-hybrid peptides was investigated…”
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C−H⋅⋅⋅O Hydrogen Bond Mediated Chain Reversal in a Peptide Containing a γ-Amino Acid Residue, Determined Directly from Powder X-ray Diffraction Data
Published in Angewandte Chemie International Edition (01-02-2002)“…Similar to the classical β turn: An intramolecular cyclic 10‐atom motif is defined in the molecular conformation of Piv‐lPro‐γ‐Abu‐NHMe (see powder X‐ray…”
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Non-classical Helices with cis Carbon-Carbon Double Bonds in the Backbone: Structural Features of α,γ-Hybrid Peptide Foldamers
Published in Angewandte Chemie (27-06-2016)“…The impact of geometrically constrained cis α,β‐unsaturated γ‐amino acids on the folding of α,γ‐hybrid peptides was investigated. Structure analysis in single…”
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C−H⋅⋅⋅O Hydrogen Bond Mediated Chain Reversal in a Peptide Containing a γ-Amino Acid Residue, Determined Directly from Powder X-ray Diffraction Data
Published in Angewandte Chemie (01-02-2002)“…Der klassischen β‐Schleife ähnlich ist ein cyclisches, aus zehn Atomen bestehendes Strukturmotiv, das durch eine intramolekulare C−H⋅⋅⋅O‐Wechselwirkung bei…”
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