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Glycinebetaine enhances and stabilizes the evolution of oxygen and the synthesis of ATP by cyanobacterial thylakoid membranes
Author(s) -
Mamedov M.D.,
Hayashi H.,
Wada H.,
Mohanty P.S.,
Papageorgiou G.C.,
Murata N.
Publication year - 1991
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(91)81446-f
Subject(s) - thylakoid , betaine , oxygen evolution , membrane , oxygen , biochemistry , atp synthase , f atpase , chemistry , biophysics , chloroplast , biology , enzyme , organic chemistry , electrochemistry , electrode , gene
Glycinebetaine (betaine), an osmoregulant in halophilic plants, stabilized the evolution of oxygen and the synthesis of ATP by thylakoid membranes from the cyanobacterium Synechocystis PCC6803 when it was present during the preparation and incubation of the thylakoid membranes. Moreover, betaine enhanced the evolution of oxygen and the synthesis of ATP when present during assays. When betaine at 1.0 M was present during the preparation of thylakoid membranes and during the measurement of activity, the rate of evolution of oxygen was equivalent to that of intact cells.