Control of starch composition and structure through substrate supply in the monocellular alga Chlamydomonas reinhardtii.

@article{Koornhuyse1996ControlOS,
  title={Control of starch composition and structure through substrate supply in the monocellular alga Chlamydomonas reinhardtii.},
  author={N Van den Koornhuyse and Nathalie Libessart and Brigitte Delrue and C Zabawinski and Andr{\'e} Decq and Alba Con Iglesias and Angel Carton and Jack J. Preiss and Steven Ball},
  journal={The Journal of biological chemistry},
  year={1996},
  volume={271 27},
  pages={
          16281-7
        }
}
In Chlamydomonas, as in higher plants, synthesis of ADP glucose catalyzed by ADP-glucose pyrophosphorylase is rate-limiting for the building of starch in the chloroplast. We have isolated disruptions of the STA1 ADP-glucose pyrophosphorylase structural gene that rendered the enzyme less responsive to the allosteric activator 3-phosphoglycerate. The structure and composition of the residual starch synthesized by all mutants of the STA1 locus is dramatically altered. The residual polysaccharide… CONTINUE READING

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