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Seven site-directed mutants of the bacterial photosynthetic reaction center (RC) from the 2.4.1 and WS 231 wild-type strains of Rhodobacter sphaeroides have been crystallized and their X-ray diffraction analyzed to resolutions between 3.0 and 4.0 A. The mutations can be divided into four distinct categories: (1) mutations altering cofactor composition that(More)
A series presenting the results of activities sponsored by the NATO Science Committee, which aims at the dissemination of advanced scientific and technological knowledge, with a view to strengthening links between scientific communities. No part of this book may be reproduced, stored in a retrieval System, or transmitted in any form or by any means
The recently developed technique of Magneto-Optical Difference Spectroscopy (MODS) [10] has been applied to reaction centers (RC) of the photosynthetic bacterium Rhodopseudomonas sphaeroides R-26. Absorbance changes induced by a magnetic field are measured as a function of wavelength yielding the triplet-minus-singlet (T-S) absorbance difference spectrum.(More)
Upconversion of 650 nm red light in Tml+ doped fluoride glasses results in the emission of blue light at 450 and 480 nm from the transitions (' D2 ->3 H4) and (' G4 ->3H6) respectively. The utilization of this effect in a blue upconversion fiber laser (UFL) device suited to high density optical recording (HOOR) has been the motivation for discussing various(More)
Linear dichroic triplet-minus-singlet [LD-(T - S)] spectra of isolated reaction centers of the photosynthetic bacterium Rhodopseudomonas viridis have been measured at 1.2 K with the linear dichroic absorbance-detected magnetic resonance (LD-ADMR) technique for two mutually perpendicular directions of the preferred axis. The LD-(T - S) spectra have been(More)
In this manuscript, a microfluidic detection module, which allows a sensitive readout of biological assays in point-of-care (POC) tests, is presented. The proposed detection module consists of a microfluidic flow cell with an integrated Complementary Metal-Oxide-Semiconductor (CMOS)-based single photon counting optical sensor. Due to the integrated(More)
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