Abstract
SummaryThe kinetics of ice‐nucleus assembly from newly synthesized nucleation protein were observed following induction of nucleation gene expression in the heterologous host Escherichia coli. Assembly was significantly slower for the small proportion of ice nuclei active above ‐4.4°C; this was consistent with the belief that these nuclei comprise the largest aggregates of nucleation protein. The kinetics of nucleus degradation were followed after inhibiting protein synthesis. Nucleation activity and protein showed a concerted decay, indicating that most of the functional ice nuclei are in equilibrium with a single cellular pool of nucleation protein. A minority of the ice nuclei decayed much more slowly than the majority; presumably their nucleation protein was distinct either by virtue of different structure or different subcellular compartmentalization, or because of its presence in a metabolically distinct subpopulation of cells.
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Dates
Type | When |
---|---|
Created | 18 years, 10 months ago (Oct. 27, 2006, 5:18 p.m.) |
Deposited | 1 year, 10 months ago (Oct. 22, 2023, 11:46 a.m.) |
Indexed | 1 year, 10 months ago (Oct. 23, 2023, 1:09 a.m.) |
Issued | 34 years, 10 months ago (Nov. 1, 1990) |
Published | 34 years, 10 months ago (Nov. 1, 1990) |
Published Online | 18 years, 10 months ago (Oct. 27, 2006) |
Published Print | 34 years, 10 months ago (Nov. 1, 1990) |
@article{Watanabe_1990, title={Rates of assembly and degradation of bacterial ice nuclei}, volume={4}, ISSN={1365-2958}, url={http://dx.doi.org/10.1111/j.1365-2958.1990.tb02036.x}, DOI={10.1111/j.1365-2958.1990.tb02036.x}, number={11}, journal={Molecular Microbiology}, publisher={Wiley}, author={Watanabe, N. M. and Southworth, M. W. and Warren, G. J. and Wolber, P. K.}, year={1990}, month=nov, pages={1871–1879} }