L. Kálmán
Concordia University
28 Papers
233 Citations
L. Kálmán is an academic researcher from Concordia University. The author has contributed to research in topics: Photosynthetic reaction centre & Rhodobacter sphaeroides. The author has an hindex of 12, co-authored 26 publications. Previous affiliations of L. Kálmán include University of Szeged & Arizona State University.
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Papers
Red, far-red, and near infrared photoswitches based on azonium ions
TL;DR: Azonium ions formed by p-amino substituted azo compounds with both ortho- and meta-methoxy substituents exhibit strong absorbance in far-red and near infrared spectral region.
107
Modified reaction centres oxidize tyrosine in reactions that mirror photosystem II
TL;DR: Modifications of reaction centres from the purple bacterium Rhodobacter sphaeroides result in the generation of a tyrosyl radical in a manner similar to that of photosystem II, and optical and electron paramagnetic resonance spectra showed changes consistent with oxidation of the tyrosine.
68
Manganese oxidation by modified reaction centers from Rhodobacter sphaeroides
TL;DR: The ability of reaction centers with high potentials to oxidizeManganese suggests that manganese oxidation could have preceded water oxidation in the evolutionary development of photosystem II.
32
Light-induced conformational changes in photosynthetic reaction centers: redox-regulated proton pathway near the dimer.
TL;DR: The results are modeled as arising from the loss of a proton pathway from the bacteriochlorophyll dimer to the solvent when His is present at the L131 position.
25
Influence of the protein environment on the properties of a tyrosyl radical in reaction centers from Rhodobacter sphaeroides.
TL;DR: The influence of the local environment on the formation of a tyrosyl radical was investigated in modified photosynthetic reaction centers from Rhodobacter sphaeroides, with results interpreted in terms of the ability of the residues to act as proton acceptors for the oxidized tyrosine.
20