In vivo effect of Ets-site mutations in theFlk-1 promoter
Mutated site
.
Wild-type sequence
.
Mutant sequence
.
TG
.
EC
.
wt
wt
wt
15
6
E#3
TTCCGG
TTggGG
14
4
E#6
CCGGAC
CCccAC
13
7
Mutated site
.
Wild-type sequence
.
Mutant sequence
.
TG
.
EC
.
wt
wt
wt
15
6
E#3
TTCCGG
TTggGG
14
4
E#6
CCGGAC
CCccAC
13
7
The number of embryos is indicated. Embryos were transgenic for LacZ reporter gene constructs containing the 939-bp Flk-1promoter with mutations in the indicated Ets sites and the 430-bp minimal enhancer. Abbreviations are shown in Table 2. The position of the Ets sites in the Flk-1 promoter is depicted in Figure 6.