Accession Number : AD0283586

Title :   THE MECHANISM OF PHOTOPHOSPHORYLATION IN CHLOROPLASTS

Corporate Author : WEIZMANN INST OF SCIENCE REHOVOTH (ISRAEL)

Personal Author(s) : AVRON,M.

Report Date : 30 APR 1962

Pagination or Media Count : 1

Abstract : The investigation performed concentrated around four aspects: (1) UV irradiation of chloroplasts: The inhibitory effects of ultraviolet irradiation on photophosphorylation and the Hill Reaction was investigated. The mechanism of the inactivation was related to the chloroplastic components which were destroyed by the treatment. (2) Photophosphorylation as a tool for the synthesis of specifically labelled nucleotides. (3) Light activated adenosine triphosphatase. (4) Reversible uncoupling of photophosphorylation. Treating chloroplasts with ethylenediaminetetraacetate brought about complete uncoupling of the photophosphorylating system. Partial recoupling could be affected by incubation of a three component system consisting of: the treated chloroplasts, the components released by the treatment (containing a small amount of protein), and a metal ion. (Author)

Descriptors :   *COENZYMES, *PHOSPHORYLATION, *PHOTOCHEMICAL REACTIONS, *PHOTOSYNTHESIS, ADENOSINE PHOSPHATES, ASCORBIC ACID, CHLOROPHYLLS, ETHYLENEDINITRILO TETRACETATES, RADIATION EFFECTS, RADIATION INJURIES, ULTRAVIOLET RADIATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE