Open AccessPhosphoserine and Phosphohydroxypyruvic Acid
Author(s) -
L. S. Daley,
R. G. S. Bidwell
Publication year - 1977
Publication title -
plant physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.554
H-Index - 312
eISSN - 1532-2548
pISSN - 0032-0889
DOI - 10.1104/pp.60.1.109
Subject(s) - phosphoserine , chemistry , biochemistry , biology , serine , phosphorylation
Photosynthetic fixation of (14)CO(2) in the bean Phaseolus vulgaris, cv. Pencil Pod Black Wax, resulted in the appearance of labeled compounds that were characterized as phosphoserine and phosphohydroxypyruvate by chromatographic separation and by the synthesis of chemical derivatives. In (14)CO(2)/(12)CO(2) pulse-chase experiments these metabolites demonstrated the rapid pool saturation and depletion of (14)C characteristic of early intermediates in photosynthetic carbon fixation. They were present in sufficient amounts to account for about 35% of total carbon fixed in 1 minute.