Association of glycolate oxidation with photosynthetic electron transport in plant and algal chloroplasts

摘要

Photosynthetic carbon metabolism is initi- ated by ribulose-bisphosphate carboxylase/oxygenase (Rubisco), which uses both CO_2 and O_2 as substrates. One 2-phosphoglycolate (P-glycolate) molecule is produced for each O_2 molecule fixed. P-glycolate has been considered to be metabolized exclusively via the oxidative photosynthetic car- bon cycle. This paper reports an additional pathway for P-glycolate and glycolate metabolism in the chloroplasts.