Table 1. Numbers of allosteric transcription factors in E. coli sorted according to their number of subunits.

Allosteric transcription factors in Escherichia coli
Type of oligomer	Numbers present
Monomers	11
Dimers	16
Tetramers	3
Hexamers	2
Octamers	1

For each of the transcription factors listed in Wall et al. [25], we searched in online databases [42] and in the literature for information on the type of oligomer they form. We excluded those for which no information could be found or for which there are contradicting reports.