Is there a consensus on the CaMV 35S minimal promoter sequence?
In case anybody ever has the same question: I found the answer in this paper by Ow et al. 1987 (fig1)
http://www.pnas.org/content/84/14/4870.full.pdf

Just to clarify, I did not want to boost expression of the enhancer element in my algae, it needed boosting in tobacco protoplasts/leaves.