Phosphorylation of Serine-15 of Maize Leaf Sucrose Synthase (Occurrence in Vivo and Possible Regulatory Significance)

  title={Phosphorylation of Serine-15 of Maize Leaf Sucrose Synthase (Occurrence in Vivo and Possible Regulatory Significance)},
  author={S. Huber and J. Huber and P. C. Liao and D. Gage and R. W. McMichael and P. Chourey and L. C. Hannah and K. Koch},
  booktitle={Plant physiology},
  • S. Huber, J. Huber, +5 authors K. Koch
  • Published in Plant physiology 1996
  • Biology, Medicine
  • Experiments were conducted to determine whether sucrose synthase (SuSy) was phosphorylated in the elongation zone of maize (Zea mays L.) leaves. The approximately 90-kD subunit of SuSy was 32P-labeled on seryl residue(s) when excised shoots were fed [32P]orthophosphate. Both isoforms of SuSy (the SS1 and SS2 proteins) were phosphorylated in vivo, and tryptic peptide-mapping analysis suggested a single, similar phosphorylation site in both proteins. A combination of matrix-assisted laser… CONTINUE READING
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