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Lu R, Li WW, Katzir A, Raichlin Y, Mizaikoff B, Yu HQ. Fourier transform infrared spectroscopy on external perturbations inducing secondary structure changes of hemoglobin. Analyst 2016; 141:6061-6067. [DOI: 10.1039/c6an01477a] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The secondary structure of proteins and their conformation are intimately related to their biological functions.
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Affiliation(s)
- Rui Lu
- Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse
- School of Environmental and Biological Engineering
- Nanjing University of Science and Technology
- Nanjing
- China
| | - Wen-Wei Li
- CAS Key Laboratory of Urban Pollutant Conversion
- Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- P.R. China
| | - Abraham Katzir
- School of Physics
- Tel-Aviv University
- Tel-Aviv 69978
- Israel
| | - Yosef Raichlin
- Department of Applied Physics
- Ariel University Center of Samaria
- Ariel
- Israel
| | - Boris Mizaikoff
- Institute of Analytical and Bioanalytical Chemistry
- Ulm University
- 89081 Ulm
- Germany
| | - Han-Qing Yu
- CAS Key Laboratory of Urban Pollutant Conversion
- Department of Chemistry
- University of Science and Technology of China
- Hefei 230026
- P.R. China
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Langmuir–Blodgett Approach to Investigate Antimicrobial Peptide–Membrane Interactions. ADVANCES IN PLANAR LIPID BILAYERS AND LIPOSOMES 2014. [DOI: 10.1016/b978-0-12-418698-9.00003-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Mahato M, Pal P, Tah B, Talapatra G. Hemoglobin–phospholipid interaction and biocomposite formation at air/water interface. Colloids Surf A Physicochem Eng Asp 2012. [DOI: 10.1016/j.colsurfa.2012.08.064] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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Tah B, Pal P, Mahato M, Talapatra GB. Aggregation behavior of SDS/CTAB catanionic surfactant mixture in aqueous solution and at the air/water interface. J Phys Chem B 2011; 115:8493-9. [PMID: 21675762 DOI: 10.1021/jp202578s] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report the aggregation behavior of catanionic mixtures of the anionic surfactant sodium dodecyl sulfate (SDS) and the cationic surfactant cetyltrimethylammonium bromide (CTAB) in solution and at the air/water interface obtained by the Langmuir-Blodgett (LB) technique. We employed Fourier transform infrared spectroscopy, in situ phase-contrast inverted microscopy, scanning electron microscopy, and atomic force microscopy to characterize the systems in solution, at the air/water interface, and in LB films. We found spherical vesicles at the SDS/CTAB ratio of 35/65 in aqueous solution and an ordered aggregated morphology called surface micelles at SDS/CTAB ratios of 35/65 to 65/35 at the air/water interface. Other mixtures (SDS/CTAB = 90/10, 10/90) were found to contain mostly disordered aggregated microstructures. An in situ time-dependent study of surface micelle formation at the air/water interface showed micelle ripening through the fusion of smaller micelles. These micelles were successfully immobilized on a glass substrate by the LB technique. Overall, the study might find application in the fundamental science of the physical chemistry of surfactant systems, as well as in the preparation of drug delivery system.
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Affiliation(s)
- Bidisha Tah
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata, India
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Kamilya T, Pal P, Mahato M, Sarkar R, Talapatra GB. Incorporation of pepsin within zwitterionic, anionic, and cationic lipid monolayers: A comparative study. RSC Adv 2011. [DOI: 10.1039/c1ra00158b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Sarkar R, Pal P, Mahato M, Kamilya T, Chaudhuri A, Talapatra GB. On the origin of iron-oxide nanoparticle formation using phospholipid membrane template. Colloids Surf B Biointerfaces 2010; 79:384-9. [PMID: 20493675 DOI: 10.1016/j.colsurfb.2010.04.023] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Revised: 04/20/2010] [Accepted: 04/27/2010] [Indexed: 11/16/2022]
Abstract
In this report, we have studied the formation of iron-oxide nanoparticle at biologically relevant phospholipids, DPPC Langmuir monolayer at air/water interface. Water subphase contains FeCl(3). Adsorption and agglomeration of Fe(3+) ions at DPPC head group have being monitored by Langmuir and Langmuir Blodgett (LB) technique. Adsorption kinetics (pi-t) as well as the surface pressure area (pi-A) isotherms measurement demonstrate the incorporation of Fe(3+) ion at DPPC monolayer. The amount of incorporation of Fe(3+) to the DPPC monolayer is FeCl(3) concentration and time dependent. This reaction kinetics is well fitted by single exponential association equation. The composite monolayers transferred to different substrates are characterized by UV-vis absorption spectroscopy and electron microscopy (FE-SEM and HR-TEM). Study shows the formation of monodisperse Fe(3)O(4) nanoparticle having size approximately 20 nm coated with DPPC mono or multilayer. The overall study indicates that the formation as well as assembly of iron-oxide nanoparticle in two dimensions is possible using lipid monolayer as a template.
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Affiliation(s)
- Ratan Sarkar
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata 700 032, India
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Mahato M, Pal P, Kamilya T, Sarkar R, Chaudhuri A, Talapatra GB. Hemoglobin−Silver Interaction and Bioconjugate Formation: A Spectroscopic Study. J Phys Chem B 2010; 114:7062-70. [DOI: 10.1021/jp100188s] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Mrityunjoy Mahato
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032, India, and Department of Physics, Narajole Raj College, Narajole, Paschim Medinipur-721 211, India
| | - Prabir Pal
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032, India, and Department of Physics, Narajole Raj College, Narajole, Paschim Medinipur-721 211, India
| | - Tapanendu Kamilya
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032, India, and Department of Physics, Narajole Raj College, Narajole, Paschim Medinipur-721 211, India
| | - Ratan Sarkar
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032, India, and Department of Physics, Narajole Raj College, Narajole, Paschim Medinipur-721 211, India
| | - Avinanda Chaudhuri
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032, India, and Department of Physics, Narajole Raj College, Narajole, Paschim Medinipur-721 211, India
| | - G. B. Talapatra
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700 032, India, and Department of Physics, Narajole Raj College, Narajole, Paschim Medinipur-721 211, India
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Mahato M, Pal P, Kamilya T, Sarkar R, Talapatra GB. pH Induced Structural Modulation and Interfacial Activity of Hemoglobin at the Air/Water Interface. J Phys Chem B 2009; 114:495-502. [DOI: 10.1021/jp908081r] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Mrityunjoy Mahato
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India, and Department of Physics, Narajole Raj College, Narajole, Paschim Medinipur-721211, India
| | - Prabir Pal
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India, and Department of Physics, Narajole Raj College, Narajole, Paschim Medinipur-721211, India
| | - Tapanendu Kamilya
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India, and Department of Physics, Narajole Raj College, Narajole, Paschim Medinipur-721211, India
| | - Ratan Sarkar
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India, and Department of Physics, Narajole Raj College, Narajole, Paschim Medinipur-721211, India
| | - G. B. Talapatra
- Department of Spectroscopy, Indian Association for the Cultivation of Science, Jadavpur, Kolkata-700032, India, and Department of Physics, Narajole Raj College, Narajole, Paschim Medinipur-721211, India
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