A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Novel heterocyst-specific flavodiiron proteins in Anabaena sp PCC 7120
Tekijät: Ermakova M, Battchikova N, Allahverdiyeva Y, Aro EM
Kustantaja: ELSEVIER SCIENCE BV
Kustannuspaikka: Laboratory of Molecular Plant Biology, Department of Biochemistry and Food Chemistry, University of Turku, FI-20014 Turku, Finland
Julkaisuvuosi: 2013
Journal: FEBS Letters
Tietokannassa oleva lehden nimi: FEBS LETTERS
Lehden akronyymi: FEBS LETT
Numero sarjassa: 1
Vuosikerta: 587
Numero: 1
Aloitussivu: 82
Lopetussivu: 87
Sivujen määrä: 6
ISSN: 0014-5793
eISSN: 1873-3468
DOI: https://doi.org/10.1016/j.febslet.2012.11.006
Verkko-osoite: 10.1016/j.febslet.2012.11.006
Tiivistelmä
Flavodiiron proteins present in many prokaryotic and some eukaryotic organisms have a capacity to protect cells against nitrosative or oxidative stress. In Anabaena sp. PCC 7120, Flv1 and Flv3 proteins are encoded by families of two genes. We demonstrate here that flv1A and flv3A genes are up-regulated in vegetative cells in low CO2 and high light conditions. In contrast, flv1B and flv3B genes are expressed in N-2-fixing conditions and corresponding proteins are located exclusively in heterocysts. It is suggested that Flv1B and Flv3B protect enzymes of N-2-fixation in heterocysts of Anabaena 7120 by reducing molecular oxygen directly to water. (C) 2012 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved.
Flavodiiron proteins present in many prokaryotic and some eukaryotic organisms have a capacity to protect cells against nitrosative or oxidative stress. In Anabaena sp. PCC 7120, Flv1 and Flv3 proteins are encoded by families of two genes. We demonstrate here that flv1A and flv3A genes are up-regulated in vegetative cells in low CO2 and high light conditions. In contrast, flv1B and flv3B genes are expressed in N-2-fixing conditions and corresponding proteins are located exclusively in heterocysts. It is suggested that Flv1B and Flv3B protect enzymes of N-2-fixation in heterocysts of Anabaena 7120 by reducing molecular oxygen directly to water. (C) 2012 Federation of European Biochemical Societies. Published by Elsevier B. V. All rights reserved.
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