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Proton translocation induced by ATPase activity in chloroplasts
Author(s) -
Carmeli C.
Publication year - 1970
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(70)80187-9
Subject(s) - atp synthase , chloroplast , proton , gramicidin , chemistry , atpase , biophysics , chemiosmosis , biochemistry , biology , membrane , enzyme , physics , nuclear physics , gene
Proton uptake by chloroplasts was induced by light‐triggered ATPase activity. A quotient of two was obtained when the initial rate of proton uptake was divided by the rate of P i released from ATP. Gramicidin accelerated the rate of ATPase activity and reduced the H + /P i ratio to 1.4. The results were found to be consistent with the chemiosmotic theory.