نتایج جستجو برای: quiescent zone
تعداد نتایج: 122019 فیلتر نتایج به سال:
The proteomics of quiescent and nonquiescent cell differentiation in yeast stationary-phase cultures
As yeast cultures enter stationary phase in rich, glucose-based medium, differentiation of two major subpopulations of cells, termed quiescent and nonquiescent, is observed. Differences in mRNA abundance between exponentially growing and stationary-phase cultures and quiescent and nonquiescent cells are known, but little was known about protein abundance in these cells. To measure protein abund...
We present a Chandra observation of the globular cluster Terzan 5 during times when the neutron-star X-ray transient EXO 1745–248 located in this cluster was in its quiescent state. We detected the quiescent system with a (0.5–10 keV) luminosity of ∼ 2 × 10 ergs s. This is similar to several other neutronstar transients observed in their quiescent states. However, the quiescent Xray spectrum of...
FELDMAN, L. J . , and J. G. TORREY. 1975. The quiescent center and primary vascular tissue pattern formation in cultured roots of Zen. Can. J . Bot. 53: 2796-2803. Roots of Zea mays cv. Kelvedon 33 were cultured in nutrient media supplemented with varying concentrations of sucrose. In some instances an individual root was grown successively for periods of time in several different concentration...
Indirect measurements of membrane potential in human diploid fibroblast cells indicate that there is a growth-related difference in membrane potential between subconfluent, growing cells (-49 mV) and serum-deprived, quiescent cells (-22 mV). The elevated membrane potential in growing cells appears to be solely responsible for the a-fold higher a-aminoisobutyric acid accumulating capacity that w...
The quiescent-cell expression system is a radical alternative to conventional fermentation for protein overproduction in Escherichia coli. It is dependent on the controlled overexpression of a small RNA called Rcd in hns mutant strains to generate nongrowing, quiescent cells which are not nutrient limited. Quiescent cells no longer produce biomass and have their metabolic resources channelled t...
Most of the microbial cells on earth under natural conditions exist in a dormant condition, commonly known as quiescent state. Quiescent cells exhibit low rates of transcription and translation suggesting that cellular abundance of proteins may be similar in quiescent cells. Therefore, this study aim to compare the proteome of budding yeast cells from two quiescent states viz. stationary phase/...
Quiescence is the most common and, arguably, most poorly understood cell cycle state. This is in part because pure populations of quiescent cells are typically difficult to isolate. We report the isolation and characterization of quiescent and nonquiescent cells from stationary-phase (SP) yeast cultures by density-gradient centrifugation. Quiescent cells are dense, unbudded daughter cells forme...
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