Control over activation or synthesis of phenylalanine ammonia-lyase by phytochrome in mustard (Sinapis alba L.)? A contribution to eliminate some misconceptions.

@article{Acton1975ControlOA,
  title={Control over activation or synthesis of phenylalanine ammonia-lyase by phytochrome in mustard (Sinapis alba L.)? A contribution to eliminate some misconceptions.},
  author={G. John Acton and Peter Schopfer},
  journal={Biochimica et biophysica acta},
  year={1975},
  volume={404 2},
  pages={231-42}
}
1. Density labelling with 80 atom% of 2H2O has been used to examine the mode of action of phytochrome (continuous far-red light) in increasing levels of L-phenylalanine ammonia-lyase (EC 4.3.1.5) activity in cotyledons of developing mustard seedlings (Sinapis alba L.). 2. Bandwidths and density shifts of isopycnically banded enzyme show that in darkness the enzyme was synthesized de novo, continuously turning over (half-life approx. 3 h) and that maximum labelling achievable was reached at 12 h… CONTINUE READING

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