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Bio-electrochemical inter-molecular impedance sensing (Bio-EI2S) at calcium-calmodulin interface induced at Au-electrode surface. J Solid State Electrochem 2022. [DOI: 10.1007/s10008-022-05169-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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2
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Yoshida K, Zenin T, Fujiyoshi A, Sanada Y, Yamaguchi T, Murata K, Takata SI, Hiroi K, Takekiyo T, Yoshimura Y. The effect of alkyl ammonium ionic liquids on thermal denaturation aggregation of β-lactoglobulin. J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111477] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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3
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Marichal L, Giraudon-Colas G, Cousin F, Thill A, Labarre J, Boulard Y, Aude JC, Pin S, Renault JP. Protein-Nanoparticle Interactions: What Are the Protein-Corona Thickness and Organization? LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:10831-10837. [PMID: 31333024 DOI: 10.1021/acs.langmuir.9b01373] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Protein adsorption on a surface is generally evaluated in terms of the evolution of the proteins' structures and functions. However, when the surface is that of a nanoparticle, the protein corona formed around it possesses a particular supramolecular structure that gives a "biological identity" to the new object. Little is known about the actual shape of the protein corona. Here, the protein corona formed by the adsorption of model proteins (myoglobin and hemoglobin) on silica nanoparticles was studied. Small-angle neutron scattering and oxygenation studies were combined to assess both the structural and functional impacts of the adsorption on proteins. Large differences in the oxygenation properties could be found while no significant global shape changes were seen after adsorption. Moreover, the structural study showed that the adsorbed proteins form an organized yet discontinuous monolayer around the nanoparticles.
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Affiliation(s)
| | | | - Fabrice Cousin
- Laboratoire Léon-Brillouin, UMR 12 CEA-CNRS , Université Paris-Saclay, CEA-Saclay , Gif-sur-Yvette 91191 , France
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Riggle BA, Greenberg ML, Wang Y, Wissner RF, Zemerov SD, Petersson EJ, Dmochowski IJ. A cryptophane-based "turn-on" 129Xe NMR biosensor for monitoring calmodulin. Org Biomol Chem 2017; 15:8883-8887. [PMID: 29058007 PMCID: PMC5681859 DOI: 10.1039/c7ob02391j] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We present the first cryptophane-based "turn-on" 129Xe NMR biosensor, employing a peptide-functionalized cryptophane to monitor the activation of calmodulin (CaM) protein in solution. In the absence of CaM binding, interaction between the peptide and cryptophane completely suppresses the hyperpolarized 129Xe-cryptophane NMR signal. Biosensor binding to Ca2+-activated CaM produces the expected 129Xe-cryptophane NMR signal.
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Affiliation(s)
- Brittany A Riggle
- Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA.
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5
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Walters CR, Szantai-Kis DM, Zhang Y, Reinert ZE, Horne WS, Chenoweth DM, Petersson EJ. The effects of thioamide backbone substitution on protein stability: a study in α-helical, β-sheet, and polyproline II helical contexts. Chem Sci 2017; 8:2868-2877. [PMID: 28553525 PMCID: PMC5428018 DOI: 10.1039/c6sc05580j] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2016] [Accepted: 01/24/2017] [Indexed: 12/17/2022] Open
Abstract
Thioamides are single atom substitutions of the peptide bond that serve as versatile probes of protein structure. Effective use of thioamides requires a robust understanding of the impact that the substitution has on a protein of interest. However, the thermodynamic effects of thioamide incorporation have only been studied in small structural motifs, and their influence on secondary structure in the context of full-length proteins is not known. Here we describe a comprehensive survey of thioamide substitutions in three benchmark protein systems (calmodulin, the B1 domain of protein G, and collagen) featuring the most prevalent secondary structure motifs: α-helix, β-sheet, and polyproline type II helix. We find that in most cases, effects on thermostability can be understood in terms of the positioning and local environment of the thioamide relative to proximal structural elements and hydrogen bonding networks. These observations set the stage for the rational design of thioamide substituted proteins with predictable stabilities.
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Affiliation(s)
- Christopher R Walters
- Department of Chemistry , University of Pennsylvania , 231 S. 34th Street , Philadelphia , PA 19104 , USA
| | - D Miklos Szantai-Kis
- Biochemistry and Molecular Biophysics Graduate Group , University of Pennsylvania , 3700 Hamilton Walk , Philadelphia , PA 19104 , USA
| | - Yitao Zhang
- Department of Chemistry , University of Pennsylvania , 231 S. 34th Street , Philadelphia , PA 19104 , USA
| | - Zachary E Reinert
- Department of Chemistry , University of Pittsburgh , 219 Parkman Avenue , Pittsburgh , PA 15260 , USA
| | - W Seth Horne
- Department of Chemistry , University of Pittsburgh , 219 Parkman Avenue , Pittsburgh , PA 15260 , USA
| | - David M Chenoweth
- Department of Chemistry , University of Pennsylvania , 231 S. 34th Street , Philadelphia , PA 19104 , USA
| | - E James Petersson
- Department of Chemistry , University of Pennsylvania , 231 S. 34th Street , Philadelphia , PA 19104 , USA
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Calcium-induced calmodulin conformational change. Electrochemical evaluation. Bioelectrochemistry 2016; 113:69-78. [PMID: 27768936 DOI: 10.1016/j.bioelechem.2016.10.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 09/27/2016] [Accepted: 10/04/2016] [Indexed: 01/08/2023]
Abstract
Calmodulin (CaM) is an essential protein present in all eukaryote cells, ranging from vertebrates to unicellular organisms. CaM is the most important Ca2+ signalling protein, composed of two domains, N- and C-terminal domains, linked by a flexible central α-helix, and is responsible for the regulation of numerous calcium-mediated signalling pathways. Four calcium ions bind to CaM, changing its conformation and determining how it recognizes and regulates its cellular targets. The oxidation mechanism of native and denatured CaM, at a glassy carbon electrode, was investigated using differential pulse voltammetry and electrochemical impedance spectroscopy. Native and denatured CaM presented only one oxidation peak, related to the tyrosine amino acid residue oxidation. Calcium-induced calmodulin conformational change and the influence of Ca2+ concentration on the electrochemical behaviour of CaM were evaluated, and significant differences, in the tyrosine amino acid residue peak potential and current, in the absence and in the presence of calcium ions, were observed. Gravimetric measurements were performed with a graphite coated piezoelectric quartz crystal with adsorbed CaM, and calcium aggregation by CaM was demonstrated.
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Bellissent-Funel MC, Hassanali A, Havenith M, Henchman R, Pohl P, Sterpone F, van der Spoel D, Xu Y, Garcia AE. Water Determines the Structure and Dynamics of Proteins. Chem Rev 2016; 116:7673-97. [PMID: 27186992 DOI: 10.1021/acs.chemrev.5b00664] [Citation(s) in RCA: 517] [Impact Index Per Article: 64.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Water is an essential participant in the stability, structure, dynamics, and function of proteins and other biomolecules. Thermodynamically, changes in the aqueous environment affect the stability of biomolecules. Structurally, water participates chemically in the catalytic function of proteins and nucleic acids and physically in the collapse of the protein chain during folding through hydrophobic collapse and mediates binding through the hydrogen bond in complex formation. Water is a partner that slaves the dynamics of proteins, and water interaction with proteins affect their dynamics. Here we provide a review of the experimental and computational advances over the past decade in understanding the role of water in the dynamics, structure, and function of proteins. We focus on the combination of X-ray and neutron crystallography, NMR, terahertz spectroscopy, mass spectroscopy, thermodynamics, and computer simulations to reveal how water assist proteins in their function. The recent advances in computer simulations and the enhanced sensitivity of experimental tools promise major advances in the understanding of protein dynamics, and water surely will be a protagonist.
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Affiliation(s)
| | - Ali Hassanali
- International Center for Theoretical Physics, Condensed Matter and Statistical Physics 34151 Trieste, Italy
| | - Martina Havenith
- Ruhr-Universität Bochum , Faculty of Chemistry and Biochemistry Universitätsstraße 150 Building NC 7/72, D-44780 Bochum, Germany
| | - Richard Henchman
- Manchester Institute of Biotechnology The University of Manchester , 131 Princess Street, Manchester M1 7DN, United Kingdom
| | - Peter Pohl
- Johannes Kepler University , Gruberstrasse, 40 4020 Linz, Austria
| | - Fabio Sterpone
- Institut de Biologie Physico-Chimique Laboratoire de Biochimie Théorique 13 Rue Pierre et Marie Curie, 75005 Paris, France
| | - David van der Spoel
- Department of Cell and Molecular Biology, Computational and Systems Biology, Uppsala University , 751 24 Uppsala, Sweden
| | - Yao Xu
- Ruhr-Universität Bochum , Faculty of Chemistry and Biochemistry Universitätsstraße 150 Building NC 7/72, D-44780 Bochum, Germany
| | - Angel E Garcia
- Center for Non Linear Studies, Los Alamos National Laboratory , Los Alamos, New Mexico 87545, United States
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High-pressure SANS and fluorescence unfolding study of calmodulin. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2014; 1844:1560-8. [DOI: 10.1016/j.bbapap.2014.05.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Revised: 05/06/2014] [Accepted: 05/16/2014] [Indexed: 11/15/2022]
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9
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Yoshida K, Fukushima Y, Yamaguchi T. A study of alcohol and temperature effects on aggregation of β-lactoglobulin by viscosity and small-angle X-ray scattering measurements. J Mol Liq 2014. [DOI: 10.1016/j.molliq.2013.06.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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