J. Breton

Publication List Details

Period

1866 - 2009

Number

70

Co-Authors

Towards a quantum approach to cell membrane electrodynamics (2009)

Breton, J., Breton, V.

The ultimate active constituents of the living medium, membranes, ions and molecules, are at the level of the nanometer. Their interactions thus require a quantum processing. The characteristic...

Towards a quantum approach to cell membrane electrodynamics (2009)

Breton, J., Breton, V.

The ultimate active constituents of the living medium, membranes, ions and molecules, are at the level of the nanometer. Their interactions thus require a quantum processing. The characteristic...

Towards a quantum approach to cell membrane electrodynamics (2009)

Breton, J., Breton, V.

The ultimate active constituents of the living medium, membranes, ions and molecules, are at the level of the nanometer. Their interactions thus require a quantum processing. The characteristic...

Towards a quantum approach to cell membrane electrodynamics (2009)

Breton, J., Breton, V.

The ultimate active constituents of the living medium, membranes, ions and molecules, are at the level of the nanometer. Their interactions thus require a quantum processing. The characteristic...

Global Potential Energy Minima of (H$_{2}$O)$_{n}$ Clusters on Graphite (2007)

Gonzalez, B. S., Hernandez-Rojas, J., Breton, J., Llorente, J. M. Gomez

Likely candidates for the global potential energy minima of (H$_{2}$O)$_{n}$ clusters with $n\leq21$ on the (0001)-surface of graphite are found using basin-hopping global optimization. The potential...

Screening of TP53 mutations by DHPLC and sequencing in brain tumours from patients with an occupational exposure to pesticides or organic solvents (2005)

Loyant, V., Jaffré, A., Breton, J., Baldi, I., Vital, A., Chapon, F., ...

The aetiology of brain tumours remains unclear. Occupational exposures to pesticides and organic solvents are suspected risk factors. The case–control study CEREPHY (221 cases, 442 controls)...

Screening of TP53 mutations by DHPLC and sequencing in brain tumours from patients with an occupational exposure to pesticides or organic solvents (2005)

Loyant, V., Jaffré, A., Breton, J., Baldi, I., Vital, A., Chapon, F., ...

The aetiology of brain tumours remains unclear. Occupational exposures to pesticides and organic solvents are suspected risk factors. The case-control study CEREPHY (221 cases, 442 controls) carried...

Redox-induced transitions in bovine cytochrome bc1 complex studied by perfusion-induced ATR-FTIR spectroscopy (2003)

Iwaki, M., Giotta, L., Akinsiku, A.O., Schägger, H., Fisher, N., Breton, J., ...

Redox transitions in a film of detergent-purified bovine cytochrome bc1 complex were investigated by perfusion-induced attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy....

Oral vinorelbine in combination with cisplatin: a novel active regimen in advanced non-small-cell lung cancer (2003)

Jassem, J., Kosmidis, P., Ramlau, R., Zarogoulidis, K., Novakova, L., Breton, J., ...

Background: A phase II trial of alternating i.v. and oral vinorelbine in combination with cisplatin was designed to determine the response rate, safety profile, progression-free survival, overall...

Electronic and vibronic coupling of the special pair of bacteriochlorophylls in photosynthetic reaction centers from wild-type and mutant strains of Rhodobacter sphaeroides (2002)

Johnson, E. T., Müh, F., Nabedryk, E., Williams, J. C., Allen, J. P., Lubitz, W., ...

The photosynthetic reaction center (RC) is an integral membrane protein that carries out the initial charge-separation reactions of photosynthesis. Upon light excitation, a pair (P) of...

THE VUV ABSORPTION-SPECTRUM OF THE SIF FREE-RADICAL (1992)

REMY, François, Mahieu, Emmanuel, MACAUHERCOT, D, DUBOIS, Iwan, BREDOHL, Harald, BRETON, J, ...

The absorption spectrum of SiF has been observed down to the LiF absorption limit. Rydberg series nsσ npσ, and npπ have been observed up to n = 15, as well as two superexcited states.

Lifetimes of radiative excited levels of H2 (1984)

Glass-Maujean, M., Breton, J., Thieblemont, B., Ito, K.

Lifetimes of photoexcited levels of H2 were measured by the time resolved fluorescence technique. For many levels, fluorescence is one decay channel among others : predissociation and autoionisation....

Lifetimes of radiative excited levels of H2 (1984)

Glass-Maujean, M., Breton, J., Thieblemont, B., Ito, K.

Lifetimes of photoexcited levels of H2 were measured by the time resolved fluorescence technique. For many levels, fluorescence is one decay channel among others : predissociation and autoionisation....

Lifetimes of radiative excited levels of H2 (1984)

Glass-Maujean, M., Breton, J., Thieblemont, B., Ito, K.

Lifetimes of photoexcited levels of H2 were measured by the time resolved fluorescence technique. For many levels, fluorescence is one decay channel among others : predissociation and autoionisation....

Dépolarisation de la lumière par les suspensions grossières (1939)

Boutaric, A., Breton, J.

Les auteurs ont étudié la dépolarisation qui se produit lorsqu'un faisceau de lumière polarisée traverse une suspension grossière (phénomène de Procopiu). Les expériences ont porté sur des...

Dépolarisation de la lumière par les suspensions grossières (1939)

Boutaric, A., Breton, J.

Les auteurs ont étudié la dépolarisation qui se produit lorsqu'un faisceau de lumière polarisée traverse une suspension grossière (phénomène de Procopiu). Les expériences ont porté sur des...

Dépolarisation de la lumière par les suspensions grossières (1939)

Boutaric, A., Breton, J.

Les auteurs ont étudié la dépolarisation qui se produit lorsqu'un faisceau de lumière polarisée traverse une suspension grossière (phénomène de Procopiu). Les expériences ont porté sur des...

Cysteine-rich LIM domains of LIM-homeodomain and LIM-only proteins contain zinc but not iron.

Archer, V E, Breton, J, Sanchez-Garcia, I, Osada, H, Forster, A, Thomson, A J, ...

The structure of LIM domains has major implications for transcription because proteins such as Is1-1 contain two LIM domains associated with a homeodomain, and RBTN1/Ttg-1 and RBTN2/Ttg-2 contain two...

Coherent nuclear dynamics at room temperature in bacterial reaction centers.

Vos, M H, Jones, M R, Hunter, C N, Breton, J, Martin, J L

A room-temperature study is reported of the femtosecond spectral evolution of the stimulated emission band of the primary electron-transfer precursor P* in bacterial photosynthesis. The study was...

Femtosecond spectral evolution of the excited state of bacterial reaction centers at 10 K.

Vos, M H, Lambry, J C, Robles, S J, Youvan, D C, Breton, J, Martin, J L

The femtosecond spectral evolution of reaction centers of Rhodobacter sphaeroides R-26 was studied at 10 K. Transient spectra in the near infrared region, obtained with 45-fs pulses (pump pulses...

Direct observation of vibrational coherence in bacterial reaction centers using femtosecond absorption spectroscopy.

Vos, M H, Lambry, J C, Robles, S J, Youvan, D C, Breton, J, Martin, J L

It is shown that vibrational coherence modulates the femtosecond kinetics of stimulated emission and absorption of reaction centers of purple bacteria. In the DLL mutant of Rhodobacter capsulatus,...

Infrared spectroelectrochemistry of bacteriochlorophylls and bacteriopheophytins: Implications for the binding of the pigments in the reaction center from photosynthetic bacteria

Mäntele, W. G., Wollenweber, A. M., Nabedryk, E., Breton, J.

The IR spectra of the bacteriochlorophyll a and b cations and the bacteriopheophytin a and b anions were obtained by using an IR and optically transparent electrochemical cell. Prominent effects of...

Dissipative structures in a two-cell system: Numerical and experimental approaches

Breton, J., Thomas, D., Hervagault, J. F.

It has been shown that the coupling between the photoreduction of the oxidized form of dichloroindophenol (an artificial electron acceptor) by thylakoids and the incident light intensity can lead to...

Excitation trapping and primary charge stabilization in Rhodopseudomonas viridis cells, measured electrically with picosecond resolution

Deprez, J., Trissl, H. W., Breton, J.

The transmembrane primary charge separation in the photosynthetic bacterium Rhodopseudomonas viridis was monitored by electric measurements of the light-gradient type [Trissl, H. W. & Kunze, U....

Femtosecond spectroscopy of excitation energy transfer and initial charge separation in the reaction center of the photosynthetic bacterium Rhodopseudomonas viridis

Breton, J., Migus, A., Antonetti, A., Orszag, A.

Reaction centers from the photosynthetic bacterium Rhodopseudomonas viridis have been excited within the near-infrared absorption bands of the dimeric primary donor (P), of the “accessory”...

A systematic survey of conserved histidines in the core subunits of Photosystem I by site-directed mutagenesis reveals the likely axial ligands of P700.

Redding, K, MacMillan, F, Leibl, W, Brettel, K, Hanley, J, Rutherford, A W, ...

The Photosystem I complex catalyses the transfer of an electron from lumenal plastocyanin to stromal ferredoxin, using the energy of an absorbed photon. The initial photochemical event is the...

Why does the light-gradient photovoltage from photosynthetic organelles show a wavelength-dependent polarity?

Paillotin, G, Dobek, A, Breton, J, Leibl, W, Trissl, H W

The light-gradient photovoltage from photosynthetic organisms and organelles is thought to arise from the primary charge separation in the reaction centers. The current explanation of the effect is...

Streptococcus suis in slaughter pigs and abattoir workers.

Breton, J, Mitchell, W R, Rosendal, S

The detection and identification of Streptococcus suis type 2 in 8.1% of 347 pig herds of southwestern Ontario revealed that the infection is widespread in this area. A herd suspected to be infected...

Isolation of Streptococcus suis using a selective medium.

Rosendal, S, Breton, J, Henrichsen, J, Hilt, L, Mitchell, W R

A selective medium containing tryptic soy agar, 5% defibrinated bovine blood, crystal violet, nalidixic acid and gentamicin significantly improved the isolation rate of Streptococcus suis from...

Light gradients in spherical photosynthetic vesicles.

Paillotin, G, Leibl, W, Gapiński, J, Breton, J, Dobek, A

Light-gradient photovoltage measurements were performed on EDTA-treated thylakoids and on osmotically swollen thylakoids (blebs), both of spherical symmetry but of different sizes. In the case of...

Modulation of primary radical pair kinetics and energetics in photosystem II by the redox state of the quinone electron acceptor Q(A).

Gibasiewicz, K, Dobek, A, Breton, J, Leibl, W

Time-resolved photovoltage measurements on destacked photosystem II membranes from spinach with the primary quinone electron acceptor Q(A) either singly or doubly reduced have been performed to...

Analysis of picosecond laser induced fluorescence phenomena in photosynthetic membranes utilizing a master equation approach.

Paillotin, G, Swenberg, C E, Breton, J, Geacintov, N E

A Pauli master equation is formulated and solved to describe the fluorescence quantum yield, phi, and the fluorescence temporal decay curves. F(t), obtained in picosecond laser excitation experiments...

Orientation of gramicidin A transmembrane channel. Infrared dichroism study of gramicidin in vesicles.

Nabedryk, E, Gingold, M P, Breton, J

Polarized infrared spectroscopy has been used to investigate the orientation of gramicidin A incorporated in dimyristoylphosphatidylcholine liposomes. Dichroism measurements of the major lipid (C = O...

Further Characterization of Protein Secondary Structures in Purple Membrane by Circular Dichroism and Polarized Infrared Spectroscopies

Nabedryk, E., Bardin, A. M., Breton, J.

The conformation and the orientation of the protein secondary structures in purple membrane was analyzed by infrared absorption and linear dichroism of oriented membranes as well as by UV circular...

The orientation of beta-sheets in porin. A polarized Fourier transform infrared spectroscopic investigation.

Nabedryk, E, Garavito, R M, Breton, J

The orientation of the protein secondary structures in porin is investigated by Fourier transform infrared (FTIR) linear dichroism of oriented multilayers of porin reconstituted in lipid vesicles....

Initial characterization of site-directed mutants of tyrosine M210 in the reaction centre of Rhodobacter sphaeroides.

Gray, K A, Farchaus, J W, Wachtveitl, J, Breton, J, Oesterhelt, D

A description of the properties of site-directed mutants of the reaction centre (RC) of Rhodobacter sphaeroides is presented. The residue tyrosine M210 (YM210) has been changed to phenylalanine...

A master equation theory of fluorescence induction, photochemical yield, and singlet-triplet exciton quenching in photosynthetic systems.

Paillotin, G, Geacintov, N E, Breton, J

A master equation theory is formulated to describe the dependence of the fluorescence yield (phi) in photosynthetic systems on the number of photons (Y) absorbed per photosynthetic unit (or domain)....

Geometry for the Primary Electron Donor and the Bacteriopheophytin Acceptor in Rhodopseudomonas viridis Photosynthetic Reaction Centers

Tiede, D. M., Choquet, Y., Breton, J.

The tetrapyrrole electron donors and acceptors (bacteriochlorophyll, BCh; bacteriopheophytin, BPh) within the bacterial photosynthetic reaction center (RC) are arranged with a specific geometry that...

Orientation of chlorophylls within chloroplasts as shown by optical and electrochromic properties of the photosynthetic membrane.

Paillotin, G, Breton, J

The effects on the optical properties of photosynthetic membranes caused by several types of chlorophyll differing in resonance frequency and in spatial disposition are theoretically analyzed. Using...

Cysteine-rich LIM domains of LIM-homeodomain and LIM-only proteins contain zinc but not iron.

Archer, V E, Breton, J, Sanchez-Garcia, I, Osada, H, Forster, A, Thomson, A J, ...

The structure of LIM domains has major implications for transcription because proteins such as Is1-1 contain two LIM domains associated with a homeodomain, and RBTN1/Ttg-1 and RBTN2/Ttg-2 contain two...

Coherent nuclear dynamics at room temperature in bacterial reaction centers.

Vos, M H, Jones, M R, Hunter, C N, Breton, J, Martin, J L

A room-temperature study is reported of the femtosecond spectral evolution of the stimulated emission band of the primary electron-transfer precursor P* in bacterial photosynthesis. The study was...

Femtosecond spectral evolution of the excited state of bacterial reaction centers at 10 K.

Vos, M H, Lambry, J C, Robles, S J, Youvan, D C, Breton, J, Martin, J L

The femtosecond spectral evolution of reaction centers of Rhodobacter sphaeroides R-26 was studied at 10 K. Transient spectra in the near infrared region, obtained with 45-fs pulses (pump pulses...

Direct observation of vibrational coherence in bacterial reaction centers using femtosecond absorption spectroscopy.

Vos, M H, Lambry, J C, Robles, S J, Youvan, D C, Breton, J, Martin, J L

It is shown that vibrational coherence modulates the femtosecond kinetics of stimulated emission and absorption of reaction centers of purple bacteria. In the DLL mutant of Rhodobacter capsulatus,...

Infrared spectroelectrochemistry of bacteriochlorophylls and bacteriopheophytins: Implications for the binding of the pigments in the reaction center from photosynthetic bacteria

Mäntele, W. G., Wollenweber, A. M., Nabedryk, E., Breton, J.

The IR spectra of the bacteriochlorophyll a and b cations and the bacteriopheophytin a and b anions were obtained by using an IR and optically transparent electrochemical cell. Prominent effects of...

Dissipative structures in a two-cell system: Numerical and experimental approaches

Breton, J., Thomas, D., Hervagault, J. F.

It has been shown that the coupling between the photoreduction of the oxidized form of dichloroindophenol (an artificial electron acceptor) by thylakoids and the incident light intensity can lead to...

Excitation trapping and primary charge stabilization in Rhodopseudomonas viridis cells, measured electrically with picosecond resolution

Deprez, J., Trissl, H. W., Breton, J.

The transmembrane primary charge separation in the photosynthetic bacterium Rhodopseudomonas viridis was monitored by electric measurements of the light-gradient type [Trissl, H. W. & Kunze, U....

Femtosecond spectroscopy of excitation energy transfer and initial charge separation in the reaction center of the photosynthetic bacterium Rhodopseudomonas viridis

Breton, J., Migus, A., Antonetti, A., Orszag, A.

Reaction centers from the photosynthetic bacterium Rhodopseudomonas viridis have been excited within the near-infrared absorption bands of the dimeric primary donor (P), of the “accessory”...

Initial characterization of site-directed mutants of tyrosine M210 in the reaction centre of Rhodobacter sphaeroides.

Gray, K A, Farchaus, J W, Wachtveitl, J, Breton, J, Oesterhelt, D

A description of the properties of site-directed mutants of the reaction centre (RC) of Rhodobacter sphaeroides is presented. The residue tyrosine M210 (YM210) has been changed to phenylalanine...

A systematic survey of conserved histidines in the core subunits of Photosystem I by site-directed mutagenesis reveals the likely axial ligands of P700.

Redding, K, MacMillan, F, Leibl, W, Brettel, K, Hanley, J, Rutherford, A W, ...

The Photosystem I complex catalyses the transfer of an electron from lumenal plastocyanin to stromal ferredoxin, using the energy of an absorbed photon. The initial photochemical event is the...

Why does the light-gradient photovoltage from photosynthetic organelles show a wavelength-dependent polarity?

Paillotin, G, Dobek, A, Breton, J, Leibl, W, Trissl, H W

The light-gradient photovoltage from photosynthetic organisms and organelles is thought to arise from the primary charge separation in the reaction centers. The current explanation of the effect is...

Streptococcus suis in slaughter pigs and abattoir workers.

Breton, J, Mitchell, W R, Rosendal, S

The detection and identification of Streptococcus suis type 2 in 8.1% of 347 pig herds of southwestern Ontario revealed that the infection is widespread in this area. A herd suspected to be infected...

Isolation of Streptococcus suis using a selective medium.

Rosendal, S, Breton, J, Henrichsen, J, Hilt, L, Mitchell, W R

A selective medium containing tryptic soy agar, 5% defibrinated bovine blood, crystal violet, nalidixic acid and gentamicin significantly improved the isolation rate of Streptococcus suis from...

Light gradients in spherical photosynthetic vesicles.

Paillotin, G, Leibl, W, Gapiński, J, Breton, J, Dobek, A

Light-gradient photovoltage measurements were performed on EDTA-treated thylakoids and on osmotically swollen thylakoids (blebs), both of spherical symmetry but of different sizes. In the case of...

Modulation of primary radical pair kinetics and energetics in photosystem II by the redox state of the quinone electron acceptor Q(A).

Gibasiewicz, K, Dobek, A, Breton, J, Leibl, W

Time-resolved photovoltage measurements on destacked photosystem II membranes from spinach with the primary quinone electron acceptor Q(A) either singly or doubly reduced have been performed to...

Analysis of picosecond laser induced fluorescence phenomena in photosynthetic membranes utilizing a master equation approach.

Paillotin, G, Swenberg, C E, Breton, J, Geacintov, N E

A Pauli master equation is formulated and solved to describe the fluorescence quantum yield, phi, and the fluorescence temporal decay curves. F(t), obtained in picosecond laser excitation experiments...

Orientation of gramicidin A transmembrane channel. Infrared dichroism study of gramicidin in vesicles.

Nabedryk, E, Gingold, M P, Breton, J

Polarized infrared spectroscopy has been used to investigate the orientation of gramicidin A incorporated in dimyristoylphosphatidylcholine liposomes. Dichroism measurements of the major lipid (C = O...

Further Characterization of Protein Secondary Structures in Purple Membrane by Circular Dichroism and Polarized Infrared Spectroscopies

Nabedryk, E., Bardin, A. M., Breton, J.

The conformation and the orientation of the protein secondary structures in purple membrane was analyzed by infrared absorption and linear dichroism of oriented membranes as well as by UV circular...

The orientation of beta-sheets in porin. A polarized Fourier transform infrared spectroscopic investigation.

Nabedryk, E, Garavito, R M, Breton, J

The orientation of the protein secondary structures in porin is investigated by Fourier transform infrared (FTIR) linear dichroism of oriented multilayers of porin reconstituted in lipid vesicles....

A master equation theory of fluorescence induction, photochemical yield, and singlet-triplet exciton quenching in photosynthetic systems.

Paillotin, G, Geacintov, N E, Breton, J

A master equation theory is formulated to describe the dependence of the fluorescence yield (phi) in photosynthetic systems on the number of photons (Y) absorbed per photosynthetic unit (or domain)....

Geometry for the Primary Electron Donor and the Bacteriopheophytin Acceptor in Rhodopseudomonas viridis Photosynthetic Reaction Centers

Tiede, D. M., Choquet, Y., Breton, J.

The tetrapyrrole electron donors and acceptors (bacteriochlorophyll, BCh; bacteriopheophytin, BPh) within the bacterial photosynthetic reaction center (RC) are arranged with a specific geometry that...

Orientation of chlorophylls within chloroplasts as shown by optical and electrochromic properties of the photosynthetic membrane.

Paillotin, G, Breton, J

The effects on the optical properties of photosynthetic membranes caused by several types of chlorophyll differing in resonance frequency and in spatial disposition are theoretically analyzed. Using...

Charge Separation and Energy Transfer in the Photosystem II Core Complex Studied by Femtosecond Midinfrared Spectroscopy

Pawlowicz, N. P., Breton, J., Van Grondelle, R.

The core of photosystem II (PSII) of green plants contains the reaction center (RC) proteins D1D2-cytb559 and two core antennas CP43 and CP47. We have used time-resolved visible pump/midinfrared...