for escherichia coli b/r growing in glucose minimal medium , the following parameters of rna synthesis remained invariant between 20 and 40 degrees c : rna polymerase concentration ( rna polymerase/mass ) , rrna and trna concentration ( rna/mass ) , rna polymerase activity ( fraction of total rna polymerase actively engaged in rna chain elongation ) , and stable rna synthesis relative to total rna synthesis .
C0035701
rrna
C0035668
rna