✦ LIBER ✦
Amino-acid biosynthesis in the cotyledons ofSinapis albaL. in darkness and far-red light studied by deuterium labelling and mass spectrometry
✍ Scribed by N. M. Shaw; K. R. Parsley; D. D. Davies
- Publisher
- Springer-Verlag
- Year
- 1985
- Tongue
- English
- Weight
- 749 KB
- Volume
- 165
- Category
- Article
- ISSN
- 0032-0935
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✦ Synopsis
The incorporation of deuterium from deuterium oxide into the free amino acids of the cotyledons of Sinapis alba L. was studied by gas chromatography-mass spectrometry and was similar, both qualitatively and quantitatively, after incubation of the seedlings in darkness or far-red light. The results support studies which show that phenylalanine ammonia-lyase (PAL, EC 4.3.1.5) is synthesised de novo, rather than activated, in response to far-red light.