Remembering Navasard V. Karapetyan (1936–2015)
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Navasard Vaganovich Karapetyan (September 6, 1936—March 6, 2015) began his scientific career at the Bach Institute of Biochemistry of the Russian Academy of Sciences, Moscow, and was associated with this institute for over 56 years. He worked in the area of biochemistry and biophysics of photosynthesis and was especially known for his studies on chlorophyll a fluorescence in higher plants and cyanobacteria, molecular organization of Photosystem I, photoprotective energy dissipation, and dynamics of energy migration in the two photosystems. We present here a brief biography and comments on the work of Navasard Karapetyan. We remember him as an enthusiastic person who had an unflagging curiosity, energy and profound sincere interest in many aspects of photosynthesis research.
KeywordsBiochemistry and biophysics of photosynthesis Antenna Long-wavelength absorbing chlorophyll a P700 Reaction center Fluorescence quenching Photosystem I Cyanobacteria
We thank all the friends and colleagues of Navasard who contributed to this Tribute. We are indebted to the entire family of Navasard Karapetyan for information on his early life and grateful to Vyacheslav Klimov, Matthias Rögner and Eberhard Schlodder for presenting their own remembrances and photographs to this Tribute.
- Karapetyan NV (1977) Variable fluorescence of chlorophyll and photosynthesis. Prog Mod Biol (Usp. Sovr. Biologii) 83:370–386. (in Russ)Google Scholar
- Karapetyan NV, Klimov VV (1971) A set-up for measurements of photoinduced changes of chlorophyll fluorescence yield in photosynthetic organisms. Fiziologia Rastenii (USSR) 18: 223–228Google Scholar
- Karapetyan NV, Klimov VV (1973) The origin of reversible and irreversible decrease of fluorescence upon illumination of chloroplasts under reductive conditions. Fiziologia Rastenii (USSR) 20:545–553Google Scholar
- Karapetyan NV, Litvin FF, Krasnovsky AA (1963) Investigation of light-induced transformations of chlorophyll by means of difference spectrophotometry. Biofizika 8:191–199. (in Russ)Google Scholar
- Karapetyan NV, Klimov VV, Krakhmaleva IN, Krasnovsky AA (1971) Introduction of fluorescence in chloroplast and chromatophores under reductive conditions. Dokl USSR Acad Sci 201: 1244–1247Google Scholar
- Karapetyan NV, Klimov VV, Krasnovsky AA (1973) Light-induced changes in fluorescence yield of particles obtained by digitonin fragmentation of chloroplasts. Photosynthetica 7:330–337Google Scholar
- Klimov VV, Shuvalov VA, Krakhmaleva IN, Karapetyan NV, Krasnovsky AA (1976) Changes in the fluorescence yield of bacteriochlorophyll under photoreduction of bacteriopheophytin in chromatophores of purple sulphur bacteria. Biochemistry 41:1435–1441Google Scholar
- Rakhimberdieva MG, Vavilin DV, Vermaas WFJ, Elanskaya IV, Karapetyan NV (2007) Phycobilin/chlorophyll excitation equilibration upon carotenoid-induced non-photochemical fluorescence quenching in phycobilisomes of the cyanobacterium Synechocystis sp. PCC 6803. Biochim Biophys Acta 1767:757–765CrossRefPubMedGoogle Scholar
- Witt H, Bordignon E, Carbonera D, Dekker JP, Karapetyan NV, Teutloff C, Webber A, Lubitz W, Schlodder E (2003) Species-specific differences of the spectroscopic properties of P700—analysis of the influence of non-conserved amino acid residues by site-directed mutagenesis of photosystem I from Chlamydomonas reinhardtii. J Biol Chem 278(47):46760–46771CrossRefPubMedGoogle Scholar