koji sam navela uz komentar na odgovor koleginice 1jelena ne funkcioniše, molim vas ubacite ga direktno u vaš browser:
supa.pharmacy.bg.ac.rs/assets/2236
ili pokušajte sa ovim linkom:
http://www.vet.bg.ac.rs/~biolog/images/stories/biologija/otp...
Stimulatorskinizovi nukleotida u DNK (enhenseri,
engl. to enhance –pojačati)predstavljaju DNK sekvence
koje nakon vezivanja regulatornih proteina dovodedo naglog
porasta aktivnosti gena. Ovi nizovi nukleotida mogu se nalaziti
na hiljade baznih parova (do 50 000) uzvodnoili nizvodnood
gena čiju aktivnost povećavaju.
Nizovi nukleotida koji umanjuju aktivnost gena označeni su
kao sajlenseri(engl. scilence –tišina).
To su potpuno ista predavanja iz Principa genetike samo sa Veterinarskog fak. u Beogradu

Pogledajte i ovde, jasno se vidi da se radi o dva različita pojma:
http://www.biology-online.org/biology-forum/about17386.html?...
Promoter is the region of DNA where the RNA polymerase binds to the DNA and can begin to transcribe the gene. Usually this is at the beginning of the gene (upstream).
The TATA box is a good example of a promoter region. It is the region that 'promotes' the transcription of mRNA/RNA.

Enhancer region is the region of DNA where certain transcription factors may bind that increases the transcription process. This is usually upstream also, but in eukaryotes it can be within the gene itself (intron), or even downstream. The proteins bind at this region to 'enhance' transcription.

I ovde npr.:
http://www.emunix.emich.edu/~rwinning/genetics/transcr.htm
Know the basic structure of regulatory regions of genes (promoters and enhancers), and understand their function.

Ako pretražite "promoter enhancer" dobićete sledeće:
http://www.google.rs/search?q=promoter enhancer&ie=utf-8&oe=...

Uvek je napisano "pomoter and enhancer" ili "promoter-enhancer" ili "promoter-enhancer"