I worked in PHD. on bacteriocins.the mechanism found in my thesis but my thesis in Arabic language.I ready its sent you .I need to know e-mail 

thankyou Sir :) 

Hello Indah,

Bacteriocins comprise a big and diverse group of ribosomally synthetized peptides in essence. Because of the diversity of this group it is impossible to elaborate on the characteristics of production of all bacteriocins collectively in one answer. Induction of bacteriocin production is very common. The most well studied bacteriocin, Nisin A, is for example autoinduced by small amounts of the nisin molecule itself. Other bacteriocins, belonging to Class IIa, are auto-induced by an induction factor encoded in their genome, which is closely situated to (mainly in the same operon with) the structural gene of the respective bacteriocin. The induction factor is one part of a 3-component induction mechanism consisting of the induction factor (pheromone peptide) a histidine kinase (the pheromone peptie receptor) and a response regulator which triggers the expression of bacteriocin and the pheromore peptide again and the procedure starts again in a cycle. Induction of bacteriocin by a bacteriocin producer by co-culture with other bacteria has been seen and it is very strain specific. In other words, the phylogenetic relationship of the producer organism and the inducer organism is irrelevant to the induction capacity.

I hope this helps but I am sure you can find much more in the literature.

All the best

Panos

Thank you so much @Panos, @Mangal. it very useful for my final exam. :)

God bless you :)