DEATH IS LACK OF REPRESSION. “A surprising view of programmed cell death emerges when one fully realizes that it is not the expression of the programmed cell death module that induces cell suicide, but its repression; self-destruction in Escherichia coli is a phenotype that results from the regulated repression (in response to environmental signals) of a self-addiction genetic module encoding a toxin and an antidote.”
http://www.nature.com/cdd/journal/v9/n4/full/4400950a.html