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Saeedi P, Moosaabadi JM, Sebtahmadi SS, Mehrabadi JF, Behmanesh M, Mekhilef S. Potential applications of bacteriorhodopsin mutants. Bioengineered 2012; 3:326-8. [PMID: 22895057 PMCID: PMC3489707 DOI: 10.4161/bioe.21445] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Bacteriorhodopsin (BR), a model system in biotechnology, is a G-protein dependent trans membrane protein which serves as a light driven proton pump in the cell membrane of Halobacterium salinarum. Due to the linkage of retinal to the protein, it seems colored and has numbers of versatile properties. As in vitro culture of the Halobacteria is very difficult, and isolation is time consuming and usually inefficient, production of genetically modified constructs of the protein is essential. There are three important characteristics based on protein catalytic cycle and molecular functions of photo-electric, photochromic and proton transporting, which makes this protein as a strategic molecule with potential applications in biotechnology. Such applications include protein films, used in artificial retinal implants, light modulators, three-dimensional optical memories, color photochromic sensors, photochromic and electrochromic papers and ink, biological camouflage and photo detectors for biodefense and non-defense purposes.
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Affiliation(s)
- P. Saeedi
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - J. Mohammadian Moosaabadi
- Department of Biochemistry; Faculty of Biosciences and Biotechnology; Malekashtar University of Technology; Tehran, Iran
| | - S. Sina Sebtahmadi
- Faculty of Electrical Engineering; University of Malaya; Kuala Lumpur, Malaysia
| | - J. Fallah Mehrabadi
- Department of Genetic Engineering; Faculty of Biosciences and Biotechnology; Malekashtar University of Technology; Tehran, Iran
| | - M. Behmanesh
- Faculty of Science; Tarbiat Modares University; Tehran, Iran
| | - S. Mekhilef
- Faculty of Electrical Engineering; University of Malaya; Kuala Lumpur, Malaysia
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Xi B, Tetley WC, Marcy DL, Zhong C, Whited G, Birge RR, Stuart JA. Evaluation of Blue and Green Absorbing Proteorhodopsins as Holographic Materials. J Phys Chem B 2008; 112:2524-32. [DOI: 10.1021/jp0740752] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Bangwei Xi
- W.M. Keck Center for Molecular Electronics and Department of Chemistry, Syracuse University, Syracuse, New York 13244; Department of Electrical & Computer Engineering, Syracuse University, Syracuse, New York 13244; Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269; Genencor International, Inc., Palo Alto, California 94304; and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
| | - William C. Tetley
- W.M. Keck Center for Molecular Electronics and Department of Chemistry, Syracuse University, Syracuse, New York 13244; Department of Electrical & Computer Engineering, Syracuse University, Syracuse, New York 13244; Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269; Genencor International, Inc., Palo Alto, California 94304; and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
| | - Duane L. Marcy
- W.M. Keck Center for Molecular Electronics and Department of Chemistry, Syracuse University, Syracuse, New York 13244; Department of Electrical & Computer Engineering, Syracuse University, Syracuse, New York 13244; Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269; Genencor International, Inc., Palo Alto, California 94304; and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
| | - Cheng Zhong
- W.M. Keck Center for Molecular Electronics and Department of Chemistry, Syracuse University, Syracuse, New York 13244; Department of Electrical & Computer Engineering, Syracuse University, Syracuse, New York 13244; Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269; Genencor International, Inc., Palo Alto, California 94304; and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
| | - Gregg Whited
- W.M. Keck Center for Molecular Electronics and Department of Chemistry, Syracuse University, Syracuse, New York 13244; Department of Electrical & Computer Engineering, Syracuse University, Syracuse, New York 13244; Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269; Genencor International, Inc., Palo Alto, California 94304; and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
| | - Robert R. Birge
- W.M. Keck Center for Molecular Electronics and Department of Chemistry, Syracuse University, Syracuse, New York 13244; Department of Electrical & Computer Engineering, Syracuse University, Syracuse, New York 13244; Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269; Genencor International, Inc., Palo Alto, California 94304; and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
| | - Jeffrey A. Stuart
- W.M. Keck Center for Molecular Electronics and Department of Chemistry, Syracuse University, Syracuse, New York 13244; Department of Electrical & Computer Engineering, Syracuse University, Syracuse, New York 13244; Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269; Genencor International, Inc., Palo Alto, California 94304; and Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269
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Abstract
The lifetime of the M-state of bacteriorhodopsin (BR) is increased by genetic and chemical modifications and by solubilizing purple membranes (PMs) with detergent. Chemically modified D96E films as well as D96N films, possess close to 100% bleaching efficiency which makes them attractive for use as image storage media. The mutant S35C has spectral and kinetic properties identical to the WT, both in aqueous suspensions and in films. This indicates that substitution of Ser-35 with Cys has an insignificant effect on the photocycling activity of BR. This substitution provides an attachment site that does not interfere with the function of BR. The magnitude of photocurrent transients generated by mutant BR proteins is used to measure the efficiency of the ground-to-M-state transitions.
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Affiliation(s)
- T Dyukova
- National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
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