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Articles 181 - 186 of 186
Full-Text Articles in Chemicals and Drugs
Differential Modulation Of Functional Dynamics And Allosteric Interactions In The Hsp90-Cochaperone Complexes With P23 And Aha1: A Computational Study, Kristin Blacklock, Gennady M. Verkhivker
Differential Modulation Of Functional Dynamics And Allosteric Interactions In The Hsp90-Cochaperone Complexes With P23 And Aha1: A Computational Study, Kristin Blacklock, Gennady M. Verkhivker
Mathematics, Physics, and Computer Science Faculty Articles and Research
Allosteric interactions of the molecular chaperone Hsp90 with a large cohort of cochaperones and client proteins allow for molecular communication and event coupling in signal transduction networks. The integration of cochaperones into the Hsp90 system is driven by the regulatory mechanisms that modulate the progression of the ATPase cycle and control the recruitment of the Hsp90 clientele. In this work, we report the results of computational modeling of allosteric regulation in the Hsp90 complexes with the cochaperones p23 and Aha1. By integrating protein docking, biophysical simulations, modeling of allosteric communications, protein structure network analysis and the energy landscape theory we …
Self-Assembled Surfactant Cyclic Peptide Nanostructures As Stabilizing Agents, Dindyal Mandal, Rakesh Tiwari, Amir Nasrolahi Shirazi, Donghoon Oh, Guofeng Ye, Antara Banerjee, Arpita Yadav, Keykavous Parang
Self-Assembled Surfactant Cyclic Peptide Nanostructures As Stabilizing Agents, Dindyal Mandal, Rakesh Tiwari, Amir Nasrolahi Shirazi, Donghoon Oh, Guofeng Ye, Antara Banerjee, Arpita Yadav, Keykavous Parang
Pharmacy Faculty Articles and Research
A number of cyclic peptides including [FR](4), [FK](4), [WK](5), [CR](4), [AK](4), and [WR](n) (n = 3-5) containing L-amino acids were produced using solid-phase peptide synthesis. We hypothesized that an optimal balance of hydrophobicity and charge could generate self-assembled nanostructures in aqueous solution by intramolecular and/or intermolecular interactions. Among all the designed peptides, [WR](n) (n = 3-5) generated self-assembled vesicle-like nanostructures at room temperature as shown by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and/or dynamic light scattering (DLS). This class of peptides represents the first report of surfactant-like cyclic peptides that self-assemble into nanostructures. A plausible mechanistic insight into …
Copper Triflate-Mediated Synthesis Of 1,3,5-Triarylpyrazoles In [Bmim][Pf6] Ionic Liquid And Evaluation Of Their Anticancer Activities, V. Kameshwara Rao, Rakesh Tiwari, Bhupender S. Chhikara, Amir Nasrolahi Shirazi, Keykavous Parang, Anil Kumar
Copper Triflate-Mediated Synthesis Of 1,3,5-Triarylpyrazoles In [Bmim][Pf6] Ionic Liquid And Evaluation Of Their Anticancer Activities, V. Kameshwara Rao, Rakesh Tiwari, Bhupender S. Chhikara, Amir Nasrolahi Shirazi, Keykavous Parang, Anil Kumar
Pharmacy Faculty Articles and Research
A simple, efficient, and environment friendly protocol for the synthesis of 1,3,5-triarylpyrazoles and 1,3,5-triarylpyrazolines in [bmim][PF6] ionic liquid mediated by Cu(OTf)2 is described. The reaction protocol gave 1,3,5-triarylpyrazoles in good to high yields (71–84%) via a one-pot addition–cyclocondensation between chalcones and arylhydrazines, and oxidative aromatization without the requirement for an additional oxidizing reagent. The catalyst can be reused for up to four cycles without much loss in the catalytic activity. The pyrazoles (4a–o) and pyrazolines (3a–n) were evaluated for their antiproliferative activity in SK-OV-3, HT-29, and HeLa human cancer cells lines. Among all the compounds, 3b inhibited cell proliferation of …
Ribosomally Synthesized And Post-Translationally Modified Peptide Natural Products: Overview And Recommendations For A Universal Nomenclature, P. G. Arnison, M. J. Bibb, G. Bierbaum, A. A. Bowers, T. S. Bugni, G. Bulaj, J. A. Camarero, D. J. Campopiano, J. M. Willey, W. A. Van Der Donk, +55 Additional Authors
Ribosomally Synthesized And Post-Translationally Modified Peptide Natural Products: Overview And Recommendations For A Universal Nomenclature, P. G. Arnison, M. J. Bibb, G. Bierbaum, A. A. Bowers, T. S. Bugni, G. Bulaj, J. A. Camarero, D. J. Campopiano, J. M. Willey, W. A. Van Der Donk, +55 Additional Authors
Journal Articles
This review presents recommended nomenclature for the biosynthesis of ribosomally synthesized and post-translationally modified peptides (RiPPs), a rapidly growing class of natural products. The current knowledge regarding the biosynthesis of the >20 distinct compound classes is also reviewed, and commonalities are discussed.
Age-Dependent Effects Of A53t Alpha-Synuclein On Behavior And Dopaminergic Function, A. W. Oaks, M. Frankfurt, D. I. Finkelstein, A. Sidhu
Age-Dependent Effects Of A53t Alpha-Synuclein On Behavior And Dopaminergic Function, A. W. Oaks, M. Frankfurt, D. I. Finkelstein, A. Sidhu
Journal Articles
Expression of A53T mutant human alpha-synuclein under the mouse prion promoter is among the most successful transgenic models of Parkinson's disease. Accumulation of A53T alpha-synuclein causes adult mice to develop severe motor impairment resulting in early death at 8-12 months of age. In younger, pre-symptomatic animals, altered motor activity and anxiety-like behaviors have also been reported. These behavioral changes, which precede severe neuropathology, may stem from non-pathological functions of alpha-synuclein, including modulation of monoamine neurotransmission. Our analysis over the adult life-span of motor activity, anxiety-like, and depressive-like behaviors identifies perturbations both before and after the onset of disease. Young A53T …
Structure And Dynamics Of A Primordial Catalytic Fold Generated By In Vitro Evolution, Fa-An Chao, Aleardo Morelli, John C. Haugner Iii, Lewis Churchfield, Lei Shi, Larry R. Masterson, Ritimukta Sarangi, Gianluigi Veglia, Burckhard Seelig