Table 2.

Inverse correlation between rare codon frequency and transcription elongation rates at individual genes.

Gene	rare codons/length (%)	Rates of translation (aa/s)	Rates of transcription (nt/s)
rplB-tufA	16/639 (2.5)	18±2*	54
infB	30/891 (3.3)	nd	45**
lacZ	80/1025 (7.8)	14	42
srb4	102/688 (15)	nd	35

The percentage (%) of rare codons in each gene tested is indicated in parenthesis.

^*the value is from (22).

^**the value is from (5).

All other numbers represent averaged values from three independent experiments (p<0.05), including those described in Fig. 1 and fig. S2.