𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Ribosome biosynthesis in Tetrahymena thermophila. IV. Regulation of ribosomal RNA synthesis in growing and growth arrested cells

✍ Scribed by Claudia A. Sutton; Paul Sylvan; Richard L. Hallberg

Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
891 KB
Volume
101
Category
Article
ISSN
0021-9541

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Three parameters involved in the production of new ribosomal RNA (rRNA) were measured in Tetrahymena thermophilia: (i) the rate of synthesis of the rRNA precursor, (ii) the rate of processing of the RNA precursor and rRNA intermediates and (iii) the efficiency of utilization of the rRNA precursor in producing mature ribosomal RNA. These parameters were measured in cells in exponential growth and in cells starved in a dilute salt solution. Growing cells synthesize rRNA 20 times faster and process rRNA precursors and intermediates 10 to 15 times more rapidly than do starved cells. Both utilize their rRNA precursors with an efficiency of one in converting them to mature rRNA.

📜 SIMILAR VOLUMES

Ribosome biosynthesis in Tetrahymena the
Ribosome biosynthesis in Tetrahymena thermophila. III. Regulation of ribosomal RNA degradation in growing and growth arrested cells
✍ Claudia A. Sutton; Richard L. Hallberg 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 787 KB

## Abstract We have measured the turnover rate of ribosomal RNA in exponentially growing __Tetrahymena thermophila__ cells, cells entering the plateau phase of growth, and nutrient‐deprived (starved) cells. Ribosomal RNA is stable in cells in early log phase growth but it begins to turnover as the

RNA synthesis in growing and stationary
RNA synthesis in growing and stationary cells of a culture of Scarlet rose. Disproportionate synthesis of ribosomal subunits in the stationary state
✍ S. Ramagopal; A. Marcus 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 659 KB

## Abstract RNA synthesis has been investigated in resting and growing cells of a culture of Scarlet rose. The rates of messenger RNA (mRNA) and ribosomal RNA (rRNA) synthesis are five‐ and ten‐fold higher, respectively, in the growing culture. In stationary phase cultures, newly synthesized 26S an