- Photobleaching and photoactivation: following protein dynamics in living cells
Cell Biology and Metabolism Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892, USA
Nat Cell Biol . 2003
..Widespread applications of these fluorescent-based methods are revealing new aspects of protein dynamics and the biological processes that they regulate...
- Adhesion and migration of ovarian cancer cells on crosslinked laminin fibers nanofabricated by multiphoton excited photochemistry
Center for Cell Analysis and Modeling, Department of Cell Biology, University of Connecticut Health Center, Farmington, CT 06030, USA
Integr Biol (Camb) 1:469-76. 2009
..To explore this possibility, we have used multiphoton excited photochemistry (MPE) to synthesize models of the ovarian basal lamina consisting of crosslinked laminin nanofibers to ..
- Reactive oxygen species in photochemistry of the red fluorescent protein "Killer Red"
Russell B Vegh
School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332 0400, USA
Chem Commun (Camb) 47:4887-9. 2011
..We have investigated the source of the bioactive species through a variety of photophysical and photochemical techniques. Our results indicate a Type I (electron transfer mediated) photosensitizing mechanism...
- Photochemistry of organic iron(III) complexing ligands in oceanic systems
Geosciences Research Division, Scripps Institution of Oceanography, University of California, San Diego, San Diego, CA, USA
Photochem Photobiol 82:1505-16. 2006
..This review highlights recent findings, including both model ligand studies and experimentallobservational studies of the natural seawater ligand pool...
- Breaking the diffraction barrier in fluorescence microscopy at low light intensities by using reversibly photoswitchable proteins
Department of NanoBiophotonics, Max Planck Institute for Biophysical Chemistry, D 37077 Gottingen, Germany
Proc Natl Acad Sci U S A 102:17565-9. 2005
..Our results underscore the potential to finally achieve molecular resolution in fluorescence microscopy by technical optimization...
- Oxygen-dependent photochemistry and photophysics of "miniSOG," a protein-encased flavin
Frederico M Pimenta
Department of Chemistry, Center for Oxygen Microscopy and Imaging, Aarhus University, Aarhus, Denmark
Photochem Photobiol 89:1116-26. 2013
- In situ elasticity modulation with dynamic substrates to direct cell phenotype
April M Kloxin
Department of Chemical and Biological Engineering, University of Colorado, 424 UCB, ECCH 111, Boulder, CO 80309 USA
Biomaterials 31:1-8. 2010
..These photodegradable hydrogels demonstrate the capability to both probe and direct cell function through dynamic changes in substrate elasticity...
- Recent developments in photocatalytic water treatment technology: a review
Meng Nan Chong
School of Chemical Engineering, The University of Adelaide, 5005 Adelaide, Australia
Water Res 44:2997-3027. 2010
..This paper will deliver a scientific and technical overview and useful information to scientists and engineers who work in this field...
- Spatiotemporal control of cell signalling using a light-switchable protein interaction
The Cell Propulsion Lab, UCSF UCB NIH Nanomedicine Development Center, University of California, San Francisco, California 94158 2517, USA
Nature 461:997-1001. 2009
- The bactericidal effect of TiO2 photocatalysis involves adsorption onto catalyst and the loss of membrane integrity
ENAC Laboratory for Environmental Biotechnology, Swiss Federal Institute of Technology EPFL, Lausanne, Switzerland
FEMS Microbiol Lett 258:18-24. 2006
..Our work suggests that adsorption of cells onto aggregated TiO2, followed by loss of membrane integrity, is key to the bactericidal effect of photocatalysis...
- The retinal pigment epithelium in visual function
Bereich Experimentelle Ophthalmologie, Klinik und Poliklinik fuer Augenheilkunde, Universitaetsklinikum Hamburg Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
Physiol Rev 85:845-81. 2005
..On the other hand, mutations in genes expressed in photoreceptors can lead to degenerations of the RPE. Thus both tissues can be regarded as a functional unit where both interacting partners depend on each other...
- Illuminating the chemistry of life: design, synthesis, and applications of "caged" and related photoresponsive compounds
Hsien Ming Lee
Department of Chemistry, The University of North Carolina, Chapel Hill, North Carolina 27599 3290, USA
ACS Chem Biol 4:409-27. 2009
- Rational design of photoconvertible and biphotochromic fluorescent proteins for advanced microscopy applications
Laboratory of Photochemistry and Spectroscopy, Department of Chemistry, Katholieke Universiteit Leuven, 3001 Heverlee, Belgium
Chem Biol 18:1241-51. 2011
..We present in particular NijiFP, a promising new fluorescent protein with photoconvertible and biphotochromic properties that make it ideal for advanced fluorescence-based imaging applications...
- Comparative photostability studies of BODIPY and fluorescein dyes by using fluorescence correlation spectroscopy
Biophysical Chemistry, Saarland University, Campus B2 2, 66123 Saarbruecken, Germany
Chemphyschem 9:2019-27. 2008
..Photobleaching is found to occur mainly through the first excited singlet state S(1), in contrast to previous findings...
- Bioinorganic photochemistry: frontiers and mechanisms
Faculty of Chemistry, Jagiellonian University, Krakow, Poland
Chem Rev 105:2647-94. 2005
- Photoproduction of catalase-insensitive peroxides on the donor side of manganese-depleted photosystem II: evidence with a specific fluorescent probe
Sergey A Khorobrykh
Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region 142290, Russia
Biochemistry 50:10658-65. 2011
..These ROOH forms, likely including several species derived from lipid peroxides, may mediate the donor side-induced photoinhibition of PSII via protein modification...
- Carbocyanine dyes as efficient reversible single-molecule optical switch
Applied Laserphysics and Laserspectroscopy, Physics Faculty, University of Bielefeld, Universitatsstrasse 25, 33615 Bielefeld, Germany
J Am Chem Soc 127:3801-6. 2005
- Animal type 1 cryptochromes. Analysis of the redox state of the flavin cofactor by site-directed mutagenesis
Department of Biochemistry and Biophysics, University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599, USA
J Biol Chem 283:3256-63. 2008
- Singlet molecular oxygen generated from lipid hydroperoxides by the russell mechanism: studies using 18(O)-labeled linoleic acid hydroperoxide and monomol light emission measurements
Departamento de Bioquimica, Instituto de Quimica, Universidade de Sao Paulo, CP26077, CEP 05513 970, Brazil
J Am Chem Soc 125:6172-9. 2003
- Engineering of a monomeric green-to-red photoactivatable fluorescent protein induced by blue light
Nadya G Gurskaya
Institute of Bioorganic Chemistry, Russian Academy of Sciences, Miklukho Maklaya 16 10, Moscow 117997, Russia
Nat Biotechnol 24:461-5. 2006
..We demonstrate the suitability of Dendra for protein labeling and tracking to quantitatively study dynamics of fibrillarin and vimentin in mammalian cells...
- Photophysical and photosensitizing properties of selected cyanines
National Institute of Laser Science, Cairo University, Cairo, Egypt
J Photochem Photobiol B 68:15-22. 2002
- Initial characterization of the primary photochemistry of AppA, a blue-light-using flavin adenine dinucleotide-domain containing transcriptional antirepressor protein from Rhodobacter sphaeroides: a key role for reversible intramolecular proton transfer f
Laboratory for Microbiology, Swammerdam Institute for Life Sciences, BioCentrum Amsterdam, University of Amsterdam, The Netherlands
Photochem Photobiol 78:290-7. 2003
..In this study, we provide further characterization of the primary photochemistry of this photoreceptor protein using UV-Vis and Fourier-transform infrared spectroscopy, pH measurements and ..
- Structural characterization of IrisFP, an optical highlighter undergoing multiple photo-induced transformations
European Synchrotron Radiation Facility, 6 rue Jules Horowitz, BP 220, 38043 Grenoble Cedex, France
Proc Natl Acad Sci U S A 105:18343-8. 2008
..The possibility to engineer and precisely control multiple phototransformations in photoactivatable FPs offers exciting perspectives for the extension of the fluorescent protein toolkit...
- Too much light? How beta-carotene protects the photosystem II reaction centre
Division of Molecular Biosciences, Imperial College London, South Kensington Campus, London, UK SW7 2AZ
Photochem Photobiol Sci 4:950-6. 2005
..The relevance of a cycle of electrons around photosystem II, via cytochrome b(559), in order to re-reduce the beta-carotenes when they are oxidised and hence restore their ability to quench singlet oxygen, is also discussed...
- Factors affecting virus photoinactivation by a series of phenothiazine dyes
S J Wagner
American Red Cross Biomedical Services, Jerome H Holland Laboratory for the Biomedical Sciences, Rockville, MD 20855, USA
Photochem Photobiol 67:343-9. 1998
- Functional recovery and expression of GDNF seen in photochemically induced cerebral infarction
Department of Rehabilitation and Physical Medicine, Graduate School of Medical and Dental Sciences, Kagoshima University, Sakuragaoka, Kagoshima, Japan
Int J Neurosci 117:315-26. 2007
..Therefore, the expression of GDNF protein might have some relationship with the functional recovery of paralysis. There are great hopes that GDNF could be used as a therapeutic agent for cerebral infarction...
- Remote energy storage in Ni(OH)2 with TiO2 photocatalyst
Institute of Industrial Science, University of Tokyo, Komaba, Tokyo, 153 8505, Japan
Phys Chem Chem Phys 8:2716-9. 2006
..It was revealed that the stored energy could be taken out and used chemically or electrochemically. The oxidized Ni(OH)2 was reduced by gaseous formaldehyde, formate, ethanol and H2O2...
- Photoelectric properties of a detector based on dried bacteriorhodopsin film
Wei Wei Wang
Department of Mechanical and Materials Engineering, Faculty of Engineering, The University of Western Ontario, London, Ontario, Canada N6A 5B9
Biosens Bioelectron 21:1309-19. 2006
..Experimental observations and a predictive model both support the notion that dried bR film can be used in simple highly sensitive photo-detector designs...
- Making light work of enzyme catalysis: protochlorophyllide oxidoreductase
Derren J Heyes
Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, UK
Trends Biochem Sci 30:642-9. 2005
..Recent advances in our understanding of the catalytic mechanism of POR illustrate why it is an important generic model for studying enzyme catalysis and reaction dynamics...
- Binding, aggregation and photochemical properties of methylene blue in mitochondrial suspensions
Departamento de Bioquimica, Instituto de Quimica, Universidade de Sao Paulo, Sao Paulo, Brazil
Photochem Photobiol 79:227-32. 2004
..These differences in photochemical properties should influence the cytotoxic effects of photodynamic treatment in the presence of MB...
- Photochemical products in urban mixtures enhance inflammatory responses in lung cells
Kenneth G Sexton
Department of Environmental Science and Engineering, University of North Carolina at Chapel Hill, 27599, USA
Inhal Toxicol 16:107-14. 2004
..In the absence of such particles, these gaseous products remained mostly as gases. These experiments show that photochemically produced gaseous products do influence the toxic responses of the cells in the absence of particles...
- Phytochrome-interacting factor 1 is a critical bHLH regulator of chlorophyll biosynthesis
Section of Molecular Cell and Developmental Biology and Institute of Molecular Biology, University of Texas at Austin, Austin, TX 78712, USA
Science 305:1937-41. 2004
- Photoactivation of the photoactive yellow protein: why photon absorption triggers a trans-to-cis Isomerization of the chromophore in the protein
Department of Biophysical Chemistry, University of Groningen, Nijenborg 4, 9747 AG Groningen, The Netherlands
J Am Chem Soc 126:4228-33. 2004
..It is this proton transfer that initiates the conformational changes within the protein, which are believed to lead to signaling...
- Photoswitchable fluorescent proteins enable monochromatic multilabel imaging and dual color fluorescence nanoscopy
Department of NanoBiophotonics, Max Planck Institute for Biophysical Chemistry, Am Fassberg 11, 37077 Gottingen, Germany
Nat Biotechnol 26:1035-40. 2008
..Furthermore, we demonstrate dual-color fluorescence microscopy with sub-diffraction resolution using bsDronpa and Dronpa whose emission maxima are separated by <20 nm...
- Photochemistry, remotely sensed physiological reflectance index and de-epoxidation state of the xanthophyll cycle in Quercus coccifera under intense drought
José Javier Peguero-Pina
Unidad de Recursos Forestales, Centro de Investigación y Tecnología Agroalimentaria, Gobierno de Aragón, Apdo 727, 50080 Saragossa, Spain
Oecologia 156:1-11. 2008
..It is concluded that, contrary to early reports, PRI is a sensible, indirect, non-destructive water stress indicator, even in plants experiencing intense drought...
- Enzymology below 200 K: the kinetics and thermodynamics of the photochemistry catalyzed by protochlorophyllide oxidoreductase
Derren J Heyes
Robert Hill Institute for Photosynthesis and Krebs Institute for Biomolecular Research, Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, United Kingdom
Proc Natl Acad Sci U S A 99:11145-50. 2002
- Caged compounds: photorelease technology for control of cellular chemistry and physiology
Graham C R Ellis-Davies
Department of Pharmacology and Physiology, Drexel University College of Medicine, Philadelphia, Pennsylvania 19102, USA
Nat Methods 4:619-28. 2007
..Here I describe important examples of widely used caged compounds, their design features and synthesis, as well as practical details of how to use them with living cells...
- A new route for the prebiotic synthesis of nucleobases and hydantoins in water/ice solutions involving the photochemistry of acetylene
Centro de Astrobiologia CSIC INTA, Ctra Torrejón Ajalvir km 4, 28850 Torrejon de Ardoz, Spain
Chemistry 19:6488-97. 2013
..A mechanism for the origin of hydantoins and uracil from urea in plausible conditions for prebiotic chemistry is also proposed...
- Whole-cell response of the pennate diatom Phaeodactylum tricornutum to iron starvation
Andrew E Allen
Centre National de la Recherche Scientifique Unite Mixte de Recherche 8186, Dept of Biology, Ecole Normale Superieure, 46 rue d Ulm, 75005 Paris, France
Proc Natl Acad Sci U S A 105:10438-43. 2008
..Iron limitation leads to the elevated expression of at least three gene clusters absent from the Thalassiosira pseudonana genome that encode for components of iron capture and uptake mechanisms...
- Characterization of photosynthetic pigment composition, photosystem II photochemistry and thermal energy dissipation during leaf senescence of wheat plants grown in the field
Photosynthesis Research Centre, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, PR China
J Exp Bot 52:1805-10. 2001
Photosynthetic pigment composition and photosystem II (PSII) photochemistry were characterized during the flag leaf senescence of wheat plants grown in the field...
- Thermodynamics, kinetics, and photochemistry of β-strand association and dissociation in a split-GFP system
Department of Chemistry, Stanford University, Stanford, California 94305 5080, United States
J Am Chem Soc 133:18078-81. 2011
..This peptide-protein photodissociation is a very unusual phenomenon and can potentially be useful for introducing spatially and temporally well-defined perturbations to biological systems as a genetically encoded caged protein...
- Mineral dust photochemistry induces nucleation events in the presence of SO2
Universite de Lyon 1, Lyon, Institut de Recherches sur la Catalyse et l Environnement de Lyon, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 5256, Villeurbanne F 69626, France
Proc Natl Acad Sci U S A 109:20842-7. 2012
..Under low dust conditions, this process may lead to nucleation events in the atmosphere. The laboratory findings are supported by recent field observations near Beijing, China, and Lyon, France...
- Characterization of PSII photochemistry and thermostability in salt-treated Rumex leaves
Hua Xin Chen
Department of Plant Science, Shandong Agricultural University, Taian, Shandong, 271018, PR China
J Plant Physiol 161:257-64. 2004
..and polyphasic fluorescence transients, to determine the effect of salt treatment and heat stress on PSII photochemistry in Rumex leaves...
- Aryl azide photochemistry in defined protein environments
Josephine L Morris
School of Chemistry, Cardiff University, Cardiff CF10 3AT United Kingdom
Org Lett 15:728-31. 2013
..Following photolysis of mutant T4 lysozyme or green fluorescent proteins, EPR spectra showed, respectively, the presence of a triplet nitrene and an anilino radical...
- The petite purple photosynthetic powerpack
Michael R Jones
Department of Biochemistry, School of Medical Sciences, University of Bristol, University Walk, Bristol, UK
Biochem Soc Trans 37:400-7. 2009
..This review provides a short overview of the structure and mechanism of the purple bacterial RC, focusing in the main on the most heavily studied complex from Rhodobacter sphaeroides...
- Binding and photochemistry of enantiomeric 2-(3-benzoylphenyl)propionic acid (ketoprofen) in the human serum albumin environment
Istituto per la Sintesi Organica e la Fotoreattivita ISOF, CNR, Via P Gobetti 101, 40129, Bologna, Italy
Photochem Photobiol Sci 6:462-70. 2007
..7-0.9). Secondary transients were consistent with the occurrence of photodecarboxylation and/or photoreduction within the protein matrix...
- Photochemistry and photocytotoxicity of alkaloids from Goldenseal (Hydrastis canadensis L.) 3: effect on human lens and retinal pigment epithelial cells
Colin F Chignell
Laboratory of Pharmacology and Chemistry, National Institute of Environmental Health Sciences, National Institutes of Health, NC, USA
Photochem Photobiol 83:938-43. 2007
..Our findings show that eyewashes and lotions derived from Goldenseal or containing berberine must be used with caution when the eyes are exposed to bright sunlight but that oral preparations are not likely to cause ocular phototoxicity...
- Photosynthetic characterization of Rubisco transplantomic lines reveals alterations on photochemistry and mesophyll conductance
Research Group on Plant Biology under Mediterranean Conditions, Universitat de les Illes Balears, Ctra de Valldemossa Km 7 5, 07122 Palma, Spain
Photosynth Res 115:153-66. 2013
..the introduced changes have little or no impact on other processes affecting photosynthesis such as leaf photochemistry or leaf CO2 diffusion conductances...
- A view on phosphate ester photochemistry by time-resolved solid state NMR. Intramolecular redox reaction of caged ATP
Alexey V Cherepanov
Biophysical Organic Chemistry Solid State NMR group, Leiden Institute of Chemistry, Faculty of Mathematics and Natural Sciences, Leiden University, Einsteinweg 55, 2333 CC, Leiden, The Netherlands
Phys Chem Chem Phys 10:6820-8. 2008
..Photoreaction of caged ATP in situ gives an opportunity to study structural kinetics and catalysis of ATP-dependent enzymes by NMR spectroscopy in rotating solids...
- The photochemistry of flutamide and its inclusion complex with beta-cyclodextrin. Dramatic effect of the microenvironment on the nature and on the efficiency of the photodegradation pathways
Dipartimento di Scienze Chimiche, Universita di Catania, Viale Andrea Doria, 8 I 95125 Catania, Italy
Photochem Photobiol 73:6-13. 2001
The photochemistry of the anticancer drug flutamide (FM), 2-methyl-N-[4-nitro-3-(trifluoromethyl)phenyl]propanamide, in homogeneous media and in the beta-cyclodextrin (beta-CD) cavity has been investigated...
- The first catalytic step of the light-driven enzyme protochlorophyllide oxidoreductase proceeds via a charge transfer complex
Derren J Heyes
Robert Hill Institute for Photosynthesis and Krebs Institute for Biomolecular Research, Department of Molecular Biology and Biotechnology, University of Sheffield, Sheffield S10 2TN, United Kingdom
J Biol Chem 281:26847-53. 2006
..to fit the Stark data, providing clear evidence that charge transfer complexes are formed during the initial photochemistry. The temperature dependences of both A696 formation and NADPH oxidation are identical, and we propose that ..
- Environmental carcinogenic polycyclic aromatic hydrocarbons: photochemistry and phototoxicity
Department of Chemistry, Jackson State University, Jackson, MS 39217, USA
J Environ Sci Health C Environ Carcinog Ecotoxicol Rev 20:149-83. 2002
..Although many books and reviews on these subjects have been published, PAH photochemistry and phototoxicity have received much less attention...
- Structural evolution of the chromophore in the primary stages of trans/cis isomerization in photoactive yellow protein
Max Born Institut fur Nichtlineare Optik und Kurzzeitspektroskopie, Max Born Strasse 2A, D 12489 Berlin, Germany
J Am Chem Soc 127:18100-6. 2005
- Prebiotic adenine revisited: eutectics and photochemistry
Leslie E Orgel
The Salk Institute for Biological Studies, San Diego, CA, USA
Orig Life Evol Biosph 34:361-9. 2004
..It is further suggested that the reaction of cyanoacetylene with cyanate in eutectic solution to give cytosine might have proceeded in parallel with adenine synthesis...
- Psoralen and coumarin photochemistry in HSA complexes and DMPC vesicles
Steacie Institute for Molecular Sciences, National Research Council Canada, Ottawa, ON, Canada
Photochem Photobiol 82:31-7. 2006
The photochemistry and photophysics of several psoralens and coumarins have been examined in human serum albumin (HSA) complexes and dimyristoylphosphatidylcholine (DMPC) vesicles...
- Excited state reactions in fluorescent proteins
Stephen R Meech
School of Chemistry, University of East Anglia, Norwich, UK NR1 2QN
Chem Soc Rev 38:2922-34. 2009
..Finally the photophysics underlying the new generation of photochemically active fluorescent proteins are discussed (155 references)...
- Photosynthetic alterations of pea leaves infected systemically by pea enation mosaic virus: A coordinated decrease in efficiencies of CO(2) assimilation and photosystem II photochemistry
Centre of the Region Haná for Biotechnological and Agricultural Research, Department of Biophysics, Faculty of Science, Palacky University, Slechtitelu 11, Olomouc CZ 78371, Czech Republic
Plant Physiol Biochem 49:1279-89. 2011
..was not induced by stomata closure and corresponded with a decrease in the efficiency of photosystem II photochemistry (Φ(PSII))...
- Quantum-dot-sensitized TiO2 inverse opals for photoelectrochemical hydrogen generation
Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore, Singapore
Small 8:37-42. 2012
..The photoelectrochemical performance shows high photocurrent density (4.84 mA cm(-2) at 0 V vs. Ag/AgCl) under simulated solar-light illumination...
- Photochemistry in photonic crystal fiber nanoreactors
Jocelyn S Y Chen
Max Planck Institut für die Physik des Lichts, Günther Scharowsky Strasse 1 Bau 24, 91058 Erlangen, Germany
Chemistry 16:5607-12. 2010
..Furthermore, the enhanced sensitivity and optical pump intensity implied that even systems with very small quantum yields can be measured very quickly--in our experiments one thousand times faster than in a conventional cuvette...
- Photophysics and photochemistry of z-chlorprothixene in acetonitrile
Luis E Piñero
Department of Chemistry, University of Puerto Rico at Humacao, Humacao, Puerto Rico
Photochem Photobiol 85:895-900. 2009
..These results indicate that the phototoxicity of zCPTX is somehow affected by the formation of CTX...
- Photodynamic therapy: update 2006. Part 1: Photochemistry and photobiology
P G Calzavara-Pinton
Department of Dermatology, Azienda Ospedaliera Spedali Civili and University of Brescia, Piazzale Spedali Civili 1, 25123 Brescia, Italy
J Eur Acad Dermatol Venereol 21:293-302. 2007
..This paper provides an overview of the chemistry of the photosensitizers, the photobiology and photoimmunology of the photodynamic reaction as well as the photophysical characteristics of the light sources available for PDT...
- Synthesis and DNA interactions of a bis-phenothiazinium photosensitizer
Department of Chemistry, Georgia State University, P O Box 4098, Atlanta, GA 30302 4098, USA
Org Biomol Chem 6:4026-35. 2008
..Finally, viscometric data indicated that CT DNA interacts with compound 3 and MB by a combination of groove binding and monofunctional intercalation, and with compound 3 by a third, bisintercalative binding mode...
- Different inactivation behaviors of MS-2 phage and Escherichia coli in TiO2 photocatalytic disinfection
School of Chemical Engineering, College of Engineering, Seoul National University, Sillim dong, Gwanak Gu, Seoul 151 742, South Korea
Appl Environ Microbiol 71:270-5. 2005
..coli is inactivated by both the free and the surface-bound hydroxyl radicals. E. coli might also be inactivated by other ROS, such as O(2).(-) and H(2)O(2), according to the present results...
- Virus inactivation by silver doped titanium dioxide nanoparticles for drinking water treatment
Michael V Liga
Department of Civil and Environmental Engineering, Rice University, Houston, TX 77005, USA
Water Res 45:535-44. 2011
..The increased production of hydroxyl free radicals was found to be responsible for the enhanced viral inactivation...
- Photochemistry of norharmane in aqueous solution
M Micaela Gonzalez
CIHIDECAR CONICET, Departamento de Quimica Organica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellon 2, 3p, Ciudad Universitaria, 1428, Buenos Aires, Argentina
Photochem Photobiol Sci 8:1139-49. 2009
The photochemistry of norharmane (9H-pyrido[3,4-b]indole) in acidic (pH 5.0+/-0.1) and alkaline (pH 10.0+/-0.1) aqueous solutions was studied...
- Determination of two phototransformation products of bentazone using quadrupole time-of-flight mass spectrometry
Europa University of Applied Sciences, Limburger Strasse 2, Idstein, Germany
Anal Bioanal Chem 388:1227-34. 2007
..The required irradiation time was matrix dependent. 2-(Isopropylcarbamoyl)phenylsulfamic acid was detected in a drainage channel in the Ebro river delta (Catalonia, Spain)...
- Formation of radicals from singlet oxygen produced during photoinhibition of isolated light-harvesting proteins of photosystem II
Department of Environmental Sciences, University of Tuscia, Largo dell Universita, 01100 Viterbo, Italy
Biochim Biophys Acta 1608:63-73. 2004
..Thus, monomerization of antennae as well as their incorporation into the PSII complex seem to represent physiologically protected forms. A comparison is made of the photoinhibition mechanisms of different photosynthetic systems...
- The photochemistry of fluorescent proteins: implications for their biological applications
Harriet E Seward
Department of Biochemistry, University of Leicester, Henry Wellcome Building, Lancaster Road, Leicester, UK LE1 9HN
Chem Soc Rev 38:2842-51. 2009
..In this tutorial review, we discuss the photochemistry of this fascinating class of proteins and illustrate some of their advantages and drawbacks in a range of ..
- One- and two-photon excitation of beta-carbolines in aqueous solution: pH-dependent spectroscopy, photochemistry, and photophysics
M Micaela Gonzalez
CIHIDECAR CONICET, Departamento de Quimica Organica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
J Phys Chem A 113:6648-56. 2009
..In this work, a study of the aqueous solution-phase photochemistry, photophysics, and spectroscopy of three important betaCs [norharmane (nHo), harmane (Ho), and harmine (Ha)] ..
- Site-specific solvation of the photoexcited protochlorophyllide a in methanol: formation of the hydrogen-bonded intermediate state induced by hydrogen-bond strengthening
Guang Jiu Zhao
State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
Biophys J 94:38-46. 2008
- Surface photochemistry of pesticides: an approach using diffuse reflectance and chromatography techniques
José P Da Silva
Centro de Quimica Fisica Molecular, Instituto Superior Tecnico, 1049 001 Lisboa, Portugal
Environ Sci Technol 38:2849-56. 2004
The photochemistry of pesticides triadimenol and triadimefon was studied on cellulose and beta-cyclodextrin (beta-CD) in controlled and natural conditions, using diffuse reflectance techniques and chromatographic analysis...
- UV photochemistry of DNA in vitro and in Bacillus subtilis spores at earth-ambient and low atmospheric pressure: implications for spore survival on other planets or moons in the solar system
Wayne L Nicholson
Department of Veterinary Science and Microbiology, University of Arizona, Tucson, Arizona 85721, USA
Astrobiology 2:417-25. 2002
..To date, however, spore survival and DNA photochemistry have been explored only at the extremes of Earth-normal atmospheric pressure (101...
- Nuclear quantum tunneling in the light-activated enzyme protochlorophyllide oxidoreductase
Derren J Heyes
Manchester Interdisciplinary Biocentre, Faculty of Life Sciences, University of Manchester, 131 Princess Street, Manchester M1 7DN, United Kingdom
J Biol Chem 284:3762-7. 2009
..Consequently, we have established the first important link between photochemical and nuclear quantum tunneling reactions, linked to protein dynamics, in a biologically significant system...
- Protochlorophyllide a: A Comprehensive Photophysical Picture
Institute for Physical Chemistry, University Jena, Lessingstrasse 10, 07743 Jena, Germany
Chemphyschem 10:144-50. 2009
The photochemistry of protochlorophyllide a, a precursor in the biosynthesis of chlorophyll and substrate of the light regulated enzyme protochlorophyllide oxidoreductase, is investigated by pump-probe spectroscopy...
- The role of reactive oxygen species in Staphylococcus aureus photoinactivation by methylene blue
National Institute of Research of Rural Engineering Water and Forestry Tunis, rue Hédi Karray, B P 10, 2080, Ariana, Tunis, Tunisia
Water Sci Technol 58:1047-54. 2008
..aureus were studied spectrophotometrically. This demonstrated that a metachromatic reaction took place between MB and S. aureus bacteria. Furthermore, S. aureus bacteria induced additional dimerization of MB...
- Environmental photochemistry of nitro-PAHs: direct observation of ultrafast intersystem crossing in 1-nitropyrene
Carlos E Crespo-Hernandez
Department of Chemistry, Center for Chemical Dynamics, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA
J Phys Chem A 112:6313-9. 2008
..The small energy gap suggests a large spin-orbit coupling between the S1(pipi*) and T3(npi*) states, which explains the ultrafast intersystem crossing of 1-nitropyrene in nonpolar solvents...
- Characterization and photochemistry of 13-desmethyl bacteriorhodopsin
Nathan B Gillespie
Department of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269 3060, USA
J Phys Chem B 109:16142-52. 2005
The photochemistry of the 13-desmethyl (DM) analogue of bacteriorhodopsin (BR) is examined by using spectroscopy, molecular orbital theory, and chromophore extraction followed by conformational analysis...
- Vibrioferrin, an unusual marine siderophore: iron binding, photochemistry, and biological implications
Shady A Amin
Department of Chemistry and Biochemistry, San Diego State University, San Diego, California 92182 1030, USA
Inorg Chem 48:11451-8. 2009
..The consequences that these features have on bacterial-algal interactions with potential importance to understanding the origin and sustenance of harmful algal blooms are discussed...
- Electric field quenching of carbon nanotube photoluminescence
Anton V Naumov
Applied Physics Program, Rice University, Houston, Texas 77005, USA
Nano Lett 8:1527-31. 2008
..Photoluminescence intensity was found to follow a reciprocal hyperbolic cosine dependence on electric field...
- Photocontrol of single-chain DNA conformation in cell-mimicking microcompartments
Institut de Chimie Moléculaire FR2769, Laboratoire de Chimie Organique UMR CNRS 7611, UPMC Universite Paris 06, 75005 Paris, France
Chembiochem 9:1201-6. 2008
- Effect of light on self-assembly of aqueous mixtures of sodium dodecyl sulfate and a cationic, bolaform surfactant containing azobenzene
F Pierce Hubbard
Department of Chemical and Biological Engineering, University of Madison Wisconsin, 1415 Engineering Drive, Madison, Wisconsin 53706 1691, USA
Langmuir 23:4819-29. 2007
..g., vesicles rich in trans-BTHA and SDS coexist with micelles rich in cis-BTHA and SDS). The results presented in this paper provide guidance for the design of light-tunable surfactants systems...
- Surface photochemistry: organic molecules within nanocavities of calixarenes
Luis F Vieira Ferreira
Centro de Química Física Molecular Complexo I, Inst Sup Téc, Universidade Tecnica de Lisboa, Av Rovisco Pais 1049 001 Lisboa, Portugal
Curr Drug Discov Technol 4:229-45. 2007
..One of the main conclusions was that the solid support can deeply affect or even control the photochemistry of an adsorbed probe...
- Prebiotic significance of extraterrestrial ice photochemistry: detection of hydantoin in organic residues
Pierre de Marcellus
Universite Paris Sud, Astrochimie et Origines, Institut d Astrophysique Spatiale, Orsay, France
Astrobiology 11:847-54. 2011
..result, together with other related experiments reported recently, points to the potential importance of the photochemistry of interstellar "dirty" ices in the formation of organics in Solar System materials...
- Morphological changes in vesicles and release of an encapsulated compound triggered by a photoresponsive Malachite Green leuconitrile derivative
Ryoko M Uda
Department of Chemical Engineering, Nara National College of Technology, Yata 22, Yamato koriyama, Nara 639 1080, Japan
Langmuir 26:5444-50. 2010
..Furthermore, irradiation of the Malachite Green derivative induces the release of a vesicle-encapsulated compound...
- Comparative photochemistry of animal type 1 and type 4 cryptochromes
Department of Biochemistry and Biophysics, University of North Carolina School of Medicine, Chapel Hill, North Carolina 27599, USA
Biochemistry 48:8585-93. 2009
..Although the photochemistry of plant CRYs has been studied in some detail, the photochemical behavior of animal cryptochromes remains ..
- EosFP, a fluorescent marker protein with UV-inducible green-to-red fluorescence conversion
Department of General Zoology and Endocrinology, University of Ulm, 89069 Ulm, Germany
Proc Natl Acad Sci U S A 101:15905-10. 2004
..The possibility to locally change the emission wavelength by focused UV light makes EosFP a superb marker for experiments aimed at tracking the movements of biomolecules within the living cell...
- Effect of denaturation on the photochemistry of pyrimidine bases in isolated DNA
Laboratoire Lesions des Acides Nucleiques, Service de Chimie Inorganique et Biologique UMR E 3 CEA UJF, CEA DSM Département de Recherche Fondamentale sur la Matière Condensée, CEA Grenoble, 38054 Grenoble Cedex 9, France
J Photochem Photobiol B 82:45-52. 2006
The influence of denaturation on DNA photochemistry was studied by quantifying the yield of formation of all possible bipyrimidine photolesions within isolated genomic DNA samples exposed to UVC radiation...
- Structure, dynamics, and energetics of the primary photochemistry of photosystem II of oxygenic photosynthesis
Bruce A Diner
CR and D, Experimental Station, E I du Pont de Nemours and Co, Wilmington, Delaware 19880 0173, USA
Annu Rev Plant Biol 53:551-80. 2002
- Photochemistry on metal nanoparticles
Fritz Haber Institut der Max Planck Gesellschaft Faradayweg 4 6, 14195 Berlin, Germany
Chem Rev 106:4301-20. 2006
- The photochemistry of 8-bromo-2'-deoxyadenosine. A direct entry to cyclopurine lesions
Liliana B Jimenez
Departamento de Quimica Instituto de Tecnologia Quimica UPV CSIC, Universidad Politecnica de Valencia, Camino de Vera s n, E 46022, Valencia, Spain
Photochem Photobiol Sci 3:1042-6. 2004
- The 1.7 A crystal structure of Dronpa: a photoswitchable green fluorescent protein
Pascal G Wilmann
The Protein Crystallography Unit, Monash University, Clayton, Victoria 3800, Australia
J Mol Biol 364:213-24. 2006
- Identification and characterization of the product release steps within the catalytic cycle of protochlorophyllide oxidoreductase
Derren J Heyes
Robert Hill Institute for Photosynthesis, Department of Molecular Biology and Biotechnology, University of Sheffield, Western Bank, United Kingdom
Biochemistry 43:8265-71. 2004
..Following release of Chlide, the subsequent binding of Pchlide allows the next catalytic cycle to proceed...
- Ultrafast time-resolved transient absorption and resonance raman spectroscopy study of the photodeprotection and rearrangement reactions of p-hydroxyphenacyl caged phosphates
Contribution from the Department of Chemistry, The University of Hong Kong, SAR, P R China
J Am Chem Soc 128:2558-70. 2006
..J. Am. Chem. Soc. 2005, 127, 1463-1472) provide a real time overall mechanistic description for the photodeprotection and rearrangement reactions of pHP caged phosphate phototrigger compounds...
- Production of reactive oxygen species in chloride- and calcium-depleted photosystem II and their involvement in photoinhibition
Institut fur Biologie II, Biochemie der Pflanzen, Universitat Freiburg, Schänzlestr 1, 79104 Freiburg, Germany
Biochim Biophys Acta 1608:171-80. 2004
- Transient absorption and photovoltage study of' self-assembled bacteriorhodopsin/polycation multilayer films
Institute of Materials Chemistry, Tampere University of Technology, PO Box 541, 33101, Tampere, Finland
Biosens Bioelectron 17:509-15. 2002
..A simultaneous two-exponential decay in millisecond time domain was observed at red wavelengths. The source of the red-shifted absorption is suggested to be the C(610) intermediate of the cis photocycle of bR...
- Structural events in the photocycle of green fluorescent protein
Jasper J van Thor
Laboratory of Molecular Biophysics, University of Oxford, Rex Richards Building, South Parks Road, Oxford OX1 3QU, United Kingdom
J Phys Chem B 109:16099-108. 2005
..Vibrational spectral markers at 1695 cm(-1) assigned to Gln 69, at 1631 cm(-1) belonging to a C=C mode, and at 1354 cm(-1) belonging to a phenolate vibration further indicated the I2 and I* states to be unrelaxed...
- Photochemistry of 5-S-cysteinyldopa
Department of Organic and Biological Chemistry, University of Naples, Italy
Photochem Photobiol 60:33-7. 1994
..These results are of interest in relation to the high susceptibility of fair-complexioned individuals to actinic damage and skin cancer...
- Visible light inactivation of bacteria and fungi by modified titanium dioxide
Faculty of Chemistry, Jagiellonian University, ul Ingardena 3, 30 060 Krakow, Poland
Photochem Photobiol Sci 6:642-8. 2007
..faecalis>>C. albicans approximately A. niger. This sequence results most probably from differences in cell wall or cell membrane structures in these microorganisms and is not related to the ability of catalase production...
- Photocatalytic degradation of E. coliform in water
Darren Delai Sun
Environmental Engineering Research Center, School of Civil and Environmental Engineering, Nanyang Technological University, 639798 Singapore
Water Res 37:3452-62. 2003
- Photoconsumption of oxygen in photosystem II preparations under impairment of the water-oxidizing complex
S A Khorobrykh
Institute of Basic Biological Problems, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia
Biochemistry (Mosc) 67:683-8. 2002
- The excited-state chemistry of protochlorophyllide a: a time-resolved fluorescence study
Institut fur Physikalische Chemie, Bayerische Julius Maximilians Universität Würzburg, Am Hubland, 97074 Wurzburg, Germany
Chemphyschem 7:1727-33. 2006