The invention provides an organism for expressing foreign DNA, the organism engineered to accept standard DNA carriers. The genome of the organism codes for intracytoplasmic membranes and features an interruption in at least one of the genes coding for restriction enzymes. Further provided is a system for producing biological materials comprising: selecting a vehicle to carry DNA which codes for the biological materials; determining sites on the vehicle's DNA sequence susceptible to restriction enzyme cleavage; choosing an organism to accept the vehicle based on that organism not acting upon at least one of said vehicle's sites; engineering said vehicle to contain said DNA; thereby creating a synthetic vector; and causing the synthetic vector to enter the organism so as cause expression of said DNA.