Table 3

Distribution of CTAG sequences.

Category of DNA CTAG countAverage spacing
All E. coli 886 7161
Protein-coding sequence 569 7159
TAG terminators 67
REP sequences 4 6144
All non–protein-coding sequences 317 1782
Regulatory regions251 1999
rRNA genes 46 697
tRNA genes 13514
10Sa RNA (ssrA) 2 233
RNase P M1 RNA (rnpB) 1 377
Expected from base composition 18,101 256