61 resultados para Stress degradation studies
Filtro por publicador
- Academic Archive On-line (Stockholm University; Sweden) (3)
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- University of Michigan (2)
- University of Queensland eSpace - Australia (26)
- University of Washington (2)
- WestminsterResearch - UK (3)
Resumo:
In plant cells, as in all other cells, proteins are submitted to permanent turnover, and the intracellular content of a given protein depends on its rate of both synthesis and degradation. The life time of most proteins is shorter than that of the cell. Thus, in young leaves of Lemna minor, the average half-life of protein was estimated to be 7 days, and it was shorter under stress conditions (Davies 1982). Such observations mean that nitrogen and amino acid fluxes are both cylic and permanent. Although protein turnover may appear wasteful, in terms of energy, numerous studies have shown that proteolysis provides multiple functions in cell physiology, and is an essential regulatory mechanism of cell metabolism and development.