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Table 1 Cellular RNA content and proportion of total RNA that is rRNA from several studies, and calculation of the cellular ribosome content.

From: A quantitative estimation of the global translational activity in logarithmically growing yeast cells

Total RNA content (g/cell)

rRNA proportion in total RNA

Ribosomes (molecules/cell)a

Study

7.6 × 10-13

80%

 

[27]

4.9 × 10-13

84%

 

[30]

5.8 × 10-13

83%

 

[25]

7.0 × 10-13

  

[29]

10.0 × 10-13

  

[28]

 

85%

 

[26]

7.1 ± 1.9 × 10-13

83 ± 2%

187,000 ± 56,000

 
  1. The last row contains averages.
  2. a calculated as (total RNA * rRNA proportion)/MW*NA; where MW is the total molecular weight of ribosomal RNA contained within a ribosome (1.9 × 106 g/mol, from http://mips.gsf.de/proj/yeast/rna/rrna.html), and NA is Avogadro's number (6.022 × 1023 mol-1).