Biology Reference
In-Depth Information
Figure 8.2
Complex promoter regions of some
Anabaena
sp. strain PCC 7120 genes
participating in heterocyst differentiation or function (
Table 8.2
). The experimentally
determined dependence on NtcA and HetR is indicated. Black triangles indicate TSPs;
blue boxes, −10 determinants; green boxes, −35 determinants; yellow box, a putative
UP element; red boxes, NtcA-binding sites. Imperfect determinants are indicated with
the corresponding light colours. See the colour plate.
transcriptionally active open promoter complexes (
Valladares, Flores, &
Herrero, 2008
). For the cases of
devBCA
(
Camargo et al., 2012
) and
nrrA
(
Ehira & Ohmori, 2006a
), induction upon nitrogen stepdown has been shown,
by making use of transcriptional fusions to the
gfp
gene, to take place in all
