Average molecular mass of RNA nucleotide in E. coli

Value 324.3 Da Range: Table - link Da
Organism Bacteria Escherichia coli
Reference Nierlich DP. Regulation of ribonucleic acid synthesis in growing bacterial cells. II. Control over the composition of the newly made RNA. J Mol Biol. 1972 Dec 30 72(3):765-77. p.770 table 1PubMed ID4573848
Method Average calculated: Average=Sum[dnt fractionXdnt molecular mass] according to ribonucleotide fractions of top row in table link and nucleotide masses: dA=329.2 Da dC=305.18 Da dU=306.16 Da dG=345.2 Da
Comments "Table 1 shows the base composition of samples of 32P-lebeled RNA taken from steady-state minimal and enriched cultures, as well as from shift-up and shift-down cultures. For the purpose of analysis [researchers] have indicated the composition of DNA, which [they] assume to be equivalent to that of messenger (uracil equal to thymine), and the composition of the stable RNA, measured after several generations labeling end chase of the cultures." Table gives base ratio of RNA and percent of stable RNA out of total RNA under different growth conditions. See notes beneath table
Entered by Uri M
ID 104886