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Zhao X, Gao Y, Zhang C, Zhu Y, Lei J, Ma Y, Du F. Wettability of ionic surfactants SDS and DTAB on wheat (Triticum aestivum) leaf surfaces. J DISPER SCI TECHNOL 2018. [DOI: 10.1080/01932691.2018.1462193] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Xin Zhao
- China Agricultural University - West Campus, Department of Appiled Chemistry, College of Science, Beijing, CN 100193
| | - Yuxia Gao
- China Agricultural University - West Campus, Department of Appiled Chemistry, College of Science, Beijing, CN 100193
| | - Chenhui Zhang
- China Agricultural University - West Campus, Department of Appiled Chemistry, College of Science, Beijing, CN 100193
| | - Yanqiu Zhu
- China Agricultural University - West Campus, Department of Appiled Chemistry, College of Science, Beijing, CN 100193
| | - Jinmei Lei
- China Agricultural University - West Campus, Department of Appiled Chemistry, College of Science, Beijing, CN 100193
| | - Yue Ma
- China Agricultural University - West Campus, Department of Appiled Chemistry, College of Science, Beijing, CN 100193
| | - Fengpei Du
- China Agricultural University - West Campus, Department of Appiled Chemistry, College of Science, Beijing, CN 100193
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Curcio E, Curcio V, Profio GD, Fontananova E, Drioli E. Energetics of Protein Nucleation on Rough Polymeric Surfaces. J Phys Chem B 2010; 114:13650-5. [DOI: 10.1021/jp106349d] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Efrem Curcio
- Department of Chemical Engineering and Materials, University of Calabria, Via P. Bucci, Cubo 44A, 87030 Rende (CS), Italy, Institute on Membrane Technology ITM-CNR, c/o University of Calabria, Via P. Bucci, Cubo 17C, 87030 Rende (CS), Italy, and Liceo Scientifico “T. Lucrezio Caro”, Via Vittorio Alfieri 58, 35013 Cittadella (PD), Italy
| | - Valerio Curcio
- Department of Chemical Engineering and Materials, University of Calabria, Via P. Bucci, Cubo 44A, 87030 Rende (CS), Italy, Institute on Membrane Technology ITM-CNR, c/o University of Calabria, Via P. Bucci, Cubo 17C, 87030 Rende (CS), Italy, and Liceo Scientifico “T. Lucrezio Caro”, Via Vittorio Alfieri 58, 35013 Cittadella (PD), Italy
| | - Gianluca Di Profio
- Department of Chemical Engineering and Materials, University of Calabria, Via P. Bucci, Cubo 44A, 87030 Rende (CS), Italy, Institute on Membrane Technology ITM-CNR, c/o University of Calabria, Via P. Bucci, Cubo 17C, 87030 Rende (CS), Italy, and Liceo Scientifico “T. Lucrezio Caro”, Via Vittorio Alfieri 58, 35013 Cittadella (PD), Italy
| | - Enrica Fontananova
- Department of Chemical Engineering and Materials, University of Calabria, Via P. Bucci, Cubo 44A, 87030 Rende (CS), Italy, Institute on Membrane Technology ITM-CNR, c/o University of Calabria, Via P. Bucci, Cubo 17C, 87030 Rende (CS), Italy, and Liceo Scientifico “T. Lucrezio Caro”, Via Vittorio Alfieri 58, 35013 Cittadella (PD), Italy
| | - Enrico Drioli
- Department of Chemical Engineering and Materials, University of Calabria, Via P. Bucci, Cubo 44A, 87030 Rende (CS), Italy, Institute on Membrane Technology ITM-CNR, c/o University of Calabria, Via P. Bucci, Cubo 17C, 87030 Rende (CS), Italy, and Liceo Scientifico “T. Lucrezio Caro”, Via Vittorio Alfieri 58, 35013 Cittadella (PD), Italy
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Lakshmanan M, Dhathathreyan A. Hydrodynamically coupled water in surface adsorbed amino acids as a tool to study hydrated peptides. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2007; 1774:138-45. [PMID: 17126617 DOI: 10.1016/j.bbapap.2006.10.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2006] [Revised: 09/22/2006] [Accepted: 10/11/2006] [Indexed: 11/23/2022]
Abstract
The influence of different amino acid residues on properties of a protein surface is of great interest and importance. Hydrodynamically coupled water in the amino acids has the potential to be used as a tool to study surface properties of proteins. The contribution of this coupled water fraction in design of a hydropathy scale in surface adsorbed amino acid films on solid using quartz crystal microbalance is presented in this work. This scale compares well with the hydropathy scale of Guy reported in the literature and can be correlated with the solid/liquid interfacial tension and work of adhesion of the adsorbed amino acid films. Using Graphical Representation and Analysis of Surface Properties (GRASP) the free energy of transfer from Octanol to water for the amino acids has been estimated and shows approximately an inverse relationship with the coupled water fraction. This scale has been applied in a benchmark test for a native Laminin peptide YIGSR and its mutated sequences (with mutations carried out at 'Y and 'R' positions). The experimentally measured coupled water fractions seem to compare well with that obtained from the present scale assuming the total solvent fraction to be a linear function of the amino acids in the sequence. A survey of the protein data bank showed that sets of sequences based on this scale occur in membrane insertion domain or in trans-membrane proteins suggesting that the scale is suitable to study structure-function correlation in proteins.
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Lakshmanan M, Parthasarathi R, Dhathathreyan A. Do properties of bovine serum albumin at fluid/electrolyte interface follow the Hofmeister series?—An analysis using Langmuir and Langmuir–Blodgett films. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2006; 1764:1767-74. [PMID: 17059902 DOI: 10.1016/j.bbapap.2006.09.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2006] [Revised: 09/15/2006] [Accepted: 09/19/2006] [Indexed: 11/30/2022]
Abstract
Folding and solubility of proteins are dependent on their state of hydration. How does a protein-bovine serum albumin (BSA) behave in the presence of Hofmeister electrolytes, especially at interfaces? Langmuir films of bovine serum albumin (BSA) in the presence of different Hofmeister electrolytes at air/solution interface and as Langmuir-Blodgett films (LB films) at solid/solution interface have been studied using the surface pressure-molecular area (pi-A) isotherms and surface energy parameters. Changes in secondary structure have been analyzed using circular dichroism (CD) and fluorescence spectroscopy. Hydrodynamically coupled water fraction of BSA in different environments has been estimated using quartz crystal microbalance (QCM) and related to the secondary structural changes. Molecular modeling of BSA in different environments showed that the protein has a compact structure at the interface compared to vacuum. The contact areas estimated using molecular modeling agreed with the experimental results. The results show that the properties of BSA at the interface follow the Hofmeister series with NaF leading to maximum compaction in the protein. Further, in addition to ion specific solvation and different ion size, water structure alteration and the bound water fractions contribute importantly to the Hofmeister effect.
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