Imperial College London
Dr Alison Telfer

Dr Alison Telfer

Faculty of Natural Sciences, Department of Life Sciences

Honorary Research Fellow
 
 
 
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Contact

 

+44 (0)20 7594 1774a.telfer

 
 
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Location

 

704Sir Ernst Chain BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

91 results found

Nixon P, Telfer A, 2022, Remembering James Barber (1940-2020), Photosynthesis Research, Vol: 153, Pages: 1-20, ISSN: 0166-8595

James Barber, known to colleagues and friends as Jim, passed away in January 2020 after a long battle against cancer. During his long and distinguished career in photosynthesis research, Jim made many outstanding contributions with the pinnacle achieving his dream of determining the first detailed structure of the Mn cluster involved in photosynthetic water oxidation. Here, colleagues and friends remember Jim and reflect upon his scientific career and the impact he had on their lives and the scientific community.

Journal article

Telfer A, 2014, Singlet Oxygen Production by PSII Under Light Stress: Mechanism, Detection and the Protective role of β-Carotene, PLANT AND CELL PHYSIOLOGY, Vol: 55, Pages: 1216-1223, ISSN: 0032-0781

Journal article

Mendes-Pinto MM, Galzerano D, Telfer A, Pascal AA, Robert B, Ilioaia Cet al., 2013, Mechanisms Underlying Carotenoid Absorption in Oxygenic Photosynthetic Proteins, JOURNAL OF BIOLOGICAL CHEMISTRY, Vol: 288, Pages: 18758-18765, ISSN: 0021-9258

Journal article

Santabarbara S, Bailleul B, Redding K, Barber J, Rappaport F, Telfer Aet al., 2012, Kinetics of phyllosemiquinone oxidation in the Photosystem I reaction centre of <i>Acaryochloris marina</i>, BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS, Vol: 1817, Pages: 328-335, ISSN: 0005-2728

Journal article

Telfer A, Pascal AA, Bordes L, Barber J, Robert Bet al., 2010, Fluorescence Line Narrowing Studies on Isolated Chlorophyll Molecules, JOURNAL OF PHYSICAL CHEMISTRY B, Vol: 114, Pages: 2255-2260, ISSN: 1520-6106

Journal article

Schenderlein M, Cetin M, Barber J, Telfer A, Schlodder Eet al., 2008, Spectroscopic studies of the chlorophyll <i>d</i> containing photosystem I from the cyanobacterium, <i>Acaryochloris marina</i>, BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS, Vol: 1777, Pages: 1400-1408, ISSN: 0005-2728

Journal article

Vass I, Cser K, Telfer A, Deak Zet al., 2008, Energetics of Photosystem II charge recombination in <i>Acaryochloris marina</i> studied by thermoluminescence and flash induced chlorophyll fluorescence measurements, PHOTOSYNTHESIS RESEARCH, Vol: 91, Pages: 140-140, ISSN: 0166-8595

Journal article

Cser K, Deak Z, Telfer A, Barber J, Vass Iet al., 2008, Energetics of Photosystem II charge recombination in <i>Acaryochloris marina</i> studied by thermoluminescence and flash-induced chlorophyll fluorescence measurements, PHOTOSYNTHESIS RESEARCH, Vol: 98, Pages: 131-140, ISSN: 0166-8595

Journal article

Bailleul B, Johnson X, Finazzi G, Barber J, Rappaport F, Telfer Aet al., 2008, The thermodynamics and kinetics of electron transfer between cytochrome <i>b</i><sub>6</sub><i>f</i> and photosystem I in the chlorophyll <i>d</i>-dominated cyanobacterium, <i>Acaryochloris marina</i>, JOURNAL OF BIOLOGICAL CHEMISTRY, Vol: 283, Pages: 25218-25226

Journal article

Telfer A, Pascal A, Gall A, 2008, Carotenoids in Photosynthesis, Carotenoids: Vol. 4: Natural Functions, Editors: Britton, Liaaen-Jensen, Pfander, Basel, Switzerland, Publisher: Birkhauser Verlag, Pages: 265-308

Book chapter

Schlodder E, Çetin M, Eckert HJ, Schmitt FJ, Barber J, Telfer Aet al., 2007, Both chlorophylls a and d are essential for the photochemistry in photosystem II of the cyanobacteria, Acaryochloris marina, Pages: 589-595, ISSN: 0005-2728

We have measured the flash-induced absorbance difference spectrum attributed to the formation of the secondary radical pair, P+Q-, between 270 nm and 1000 nm at 77 K in photosystem II of the chlorophyll d containing cyanobacterium, Acaryochloris marina. Despite the high level of chlorophyll d present, the flash-induced absorption difference spectrum of an approximately 2 ms decay component shows a number of features which are typical of the difference spectrum seen in oxygenic photosynthetic organisms containing no chlorophyll d. The spectral shape in the near-UV indicates that a plastoquinone is the secondary acceptor molecule (QA). The strong C-550 change at 543 nm confirms previous reports that pheophytin a is the primary electron acceptor. The bleach at 435 nm and increase in absorption at 820 nm indicates that the positive charge is stabilized on a chlorophyll a molecule. In addition a strong electrochromic band shift, centred at 723 nm, has been observed. It is assigned to a shift of the Qy band of the neighbouring accessory chlorophyll d, ChlD1. It seems highly likely that it accepts excitation energy from the chlorophyll d containing antenna. We therefore propose that primary charge separation is initiated from this chlorophyll d molecule and functions as the primary electron donor. Despite its lower excited state energy (0.1 V less), as compared to chlorophyll a, this chlorophyll d molecule is capable of driving the plastoquinone oxidoreductase activity of photosystem II. However, chlorophyll a is used to stabilize the positive charge and ultimately to drive water oxidation. © 2007 Elsevier B.V. All rights reserved.

Conference paper

Scgkidder E, Cetin M, Eckert HJ, Schmitt FJ, Barber J, Telfer Aet al., 2007, Bother Chlorophylls a and d are essential for the photochemistry in photosystem of cyanobacteria, Acaryochloris Marina, BBA-Bioenergetics, Vol: 1767

Journal article

Govindjee, Telfer A, 2007, Six young research investigators were honored at an international conference in Russia, PHOTOSYNTHESIS RESEARCH, Vol: 92, Pages: 139-141, ISSN: 0166-8595

Journal article

Di Valentin M, Ceola S, Agostini G, Telfer A, Barber J, Boehles F, Santabarbara S, Carbonera Det al., 2007, The photo-excited triplet state of chlorophyll <i>d</i> in methyl-tetrahydrofuran studied by optically detected magnetic resonance and time-resolved EPR, MOLECULAR PHYSICS, Vol: 105, Pages: 2109-2117, ISSN: 0026-8976

Journal article

Chen M, Telfer A, Lin S, Pascal A, Larkum AWD, Barber J, Blankenship REet al., 2005, The nature of the photosystem II reaction centre in the chlorophyll d-containing prokaryote, Acaryochloris marina, PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, Vol: 4, Pages: 1060-1064, ISSN: 1474-905X

Journal article

Telfer A, 2005, Too much light? How beta-carotene protects the photosystem II reaction centre, PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, Vol: 4, Pages: 950-956, ISSN: 1474-905X

Journal article

Lendzian F, Bittl R, Telfer A, Lubitz Wet al., 2003, Hyperfine structure of the photoexcited triplet state <SUP>3</SUP>P680 in plant PSII reaction centres as detennined by pulse ENDOR spectroscopy, BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS, Vol: 1605, Pages: 35-46, ISSN: 0005-2728

Journal article

Telfer A, Frolov D, Barber J, Robert B, Pascal Aet al., 2003, Oxidation of the two β-carotene molecules in the photosystem II reaction center, BIOCHEMISTRY, Vol: 42, Pages: 1008-1015, ISSN: 0006-2960

Journal article

Brudvig GW, Telfer A, Moore TA, Styring S, Rutherford AW, Fromme P, Aro EMet al., 2002, What is β-carotene doing in the photosystem II reaction centre?: Discussion, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES B-BIOLOGICAL SCIENCES, Vol: 357, Pages: 1439-1440, ISSN: 0962-8436

Journal article

Telfer A, 2002, What is β-carotene doing in the photosystem II reaction centre?, PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES, Vol: 357, Pages: 1431-1439, ISSN: 0962-8436

Journal article

Lendzian F, Bittl R, Telfer A, Lubitz Wet al., 2000, Pulsed endor on short-lived photoexcited triplet states in bacterial and plant photosynthesis., BIOPHYSICAL JOURNAL, Vol: 78, Pages: 382A-382A, ISSN: 0006-3495

Journal article

Pascal A, Telfer A, Barber J, Robert Bet al., 1999, Fourier-transform resonance Raman spectra of cation carotenoid in photosystem II reaction centres, FEBS LETTERS, Vol: 453, Pages: 11-14, ISSN: 0014-5793

Journal article

Telfer A, Oldham TC, Phillips D, Barber Jet al., 1999, Singlet oxygen formation detected by near-infrared emission from isolated photosystem II reaction centres: direct correlation between P680 triplet decay and luminescence rise kinetics and its consequences for photoinhibition, Journal of Photochemistry and Photobiology B-Biology, Vol: 48, Pages: 89-96, ISSN: 1011-1344

Journal article

Lendzian F, Bittl R, Telfer A, Barber J, Lubitz Wet al., 1998, Time resolved ENDOR of the triplet state of P680 in PSII reaction centers, XIth International Congress on Photosynthesis - Mechanisms and Effects, Publisher: SPRINGER, Pages: 1057-1060

Conference paper

Telfer A, Lendzian F, Schlodder E, Barber J, Lubitz Wet al., 1998, ENDOR and transient absorption studies of P680<SUP>+</SUP> and other cation radicals in PSII reaction centres before and after inactivation of secondary electron donors, XIth International Congress on Photosynthesis - Mechanisms and Effects, Publisher: SPRINGER, Pages: 1061-+

Conference paper

Leaney FW, Herczeg AL, Love AJ, Telfer Aet al., 1996, Stable isotopes and C-14 for estimating sustainable use of groundwater in the western Murray Basin, Australia, Symposium on Isotopes in Water Resources Management, Publisher: INT ATOMIC ENERGY AGENCY, Pages: 314-317, ISSN: 0074-1884

Conference paper

VACHA F, JOSEPH DM, DURRANT JR, TELFER A, KLUG DR, PORTER G, BARBER Jet al., 1995, PHOTOCHEMISTRY AND SPECTROSCOPY OF A 5-CHLOROPHYLL REACTION-CENTER OF PHOTOSYSTEM-II ISOLATED BY USING A CU AFFINITY COLUMN, PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, Vol: 92, Pages: 2929-2933, ISSN: 0027-8424

Journal article

ALIZADEH S, NIXON PJ, TELFER A, BARBER Jet al., 1995, ISOLATION AND CHARACTERIZATION OF THE PHOTOSYSTEM 2 REACTION-CENTER COMPLEX FROM A DOUBLE MUTANT OF CHLAMYDOMONAS-REINHARDTII, PHOTOSYNTHESIS RESEARCH, Vol: 43, Pages: 165-171, ISSN: 0166-8595

Journal article

Zheleva D, Vacha F, Hankamer B, Telfer A, Barber Jet al., 1995, Determination of the complex homogeneity and pigment stoichiometry of isolated PS II reaction centres, Xth International Photosynthesis Congress, Publisher: KLUWER ACADEMIC PUBL, Pages: 759-762

Conference paper

Telfer A, Barber J, 1995, Role of carotenoid bound to the photosystem II reaction centre, Xth International Photosynthesis Congress, Publisher: KLUWER ACADEMIC PUBL, Pages: 15-20

Conference paper

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