Hi,

If you enter GeneCards.org website with your searching eukaryotic gene or protein name, you will find genomic sequence knowledge as well as promoter region and other useful things. I added an example about MAOA gene.

I don't know if Matlab's Bioinformatics tool has this type knowledge but maybe.

Thanks Dilara!, I´ll try it!

You can check the following links. These might be useful.

http://molbiol-tools.ca/Promoters.htm

https://abc.med.cornell.edu/education/introtobio/t-promoter.html

http://bip.weizmann.ac.il/toolbox/seq_analysis/promoters.html

http://www.sciencedirect.com/science/article/pii/S0168952500021740

There are several databases of promoters databases, including EPD: Eukaryotic Promoter Database (epd.vital-it.ch/) from which you can extract promoter sequences related to some eukaryotic species. To serach for consus sequences or motifs you can use MEME, to predict over-represented motifs within your promoter sequences. I hope that my answer can help you.