the fraction of the total ribonucleic acid ( rna ) synthesis rate that is messenger rna ( mrna ) for ribosomal protein ( r-protein ) and ribosomal rna ( rrna ) has been estimated in vals ( ts ) rel+ stringent and vals ( ts ) rela1 relaxed strains of escherichia coli during a partial inhibition of valyl-transfer rna aminoacylation .
C0035668
ribonucleic acid
C0035696
messenger rna