Table 2. Regular expressions of different promoter elements which give the terminal set.

Promoter Elements	Regular Expressions
1. TATA-box	ta[ta][ta][tag][ta]
2. Initiator	[ctg][ctg]a[atgc][at][ct][ct]
3. BRE	[gc][gc][ga]cgcc
4. DPE	[ag]g[at][ct][cag]
5. Gap	[atcg]+