Some Aspects of the Regulation of Arginine Biosynthesis in Soybean Cell Cultures 1
AUTOR(ES)
Shargool, P. D.
RESUMO
The levels of the activities of argininosuccinate synthetase and argininosuccinate lyase were measured in soybean (glycine max L. var. Mandarin) cell suspension cultures grown in the presence or absence of exogenous arginine. In some experiments, actinomycin D or cycloheximide were also added to the cultures, at critical stages of their growth. The results obtained led to the conclusion that activity of argininosuccinate synthetase is subject to significant inhibition by levels of arginine similar to those found to occur within the cells. Argininosuccinate lyase activity appeared to be enhanced, when arginine levels were increased above those occurring physiologically. Both enzymes appeared to be subject to inactivation, possibly via proteolysis.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=366440Documentos Relacionados
- Tryptophan Biosynthesis in Cell Cultures of Nicotiana tabacum1
- SOME ASPECTS OF THE INDUCED BIOSYNTHESIS OF ALPHA-AMYLASE OF PSEUDOMONAS SACCHAROPHILA1
- Arginine regulation of gramicidin S biosynthesis.
- Regulation of Pyrimidine and Arginine Biosynthesis Investigated by the Use of Phaseolotoxin and 5-Fluorouracil 1
- Importance of Glutamate Synthase in Glutamate Synthesis by Soybean Cell Suspension Cultures 1
