TABLE 2.

Back-to-back divergent promoters in E. coli

Promoter paira	Transcriptionb	Positionc	Separation (pdb)d	Reference
fepA	Reverse	611892	16	26
fes	Forward	611908
bioA	Reverse	808515	10	24
bioB	Forward	808525
fumA	Reverse	1686464	111	20
manA	Forward	1686575
pdx	Reverse	2435904	28	33
div	Forward	2435932
udf Px	Reverse	3208209	78	6
rpsUp1	Forward	3208287
dnaAp1	Reverse	3881590	104	23
rpmHp3	Forward	3881694
asnC	Reverse	3924656	101	19
asnA	Forward	3924757
ilvY	Reverse	3955488	45	39
ilvC	Forward	3955533
metJp1	Reverse	4126138	78	18
metB	Forward	4126216
trmA	Reverse	4160874	104	14
btuB	Forward	4160978		2
uvrA	Reverse	4271512	78	32
ssb	Forward	4271590		5
IleRp2	Reverse	4445871	108	38
ORF83	Forward	4445979
smp	Reverse	4622368	64	22
serB	Forward	4622432

^aOnly pairs with a distance between start sites of 120 pdb or fewer are shown. All are promoters for RNAP holoenzyme containing ς⁷⁰. 

^bForward is in a clockwise direction on the genome (in the direction of increasing numbers on the map of Blattner et al. [4]). 

^cPosition of start site. 

^dSeparation (in total number of pdb) of the start sites between forward and reverse promoters (map number of forward start site − map number of reverse start site).