molecular biology techniques yeast two hybrid system bacteria used industrial production amino acids ''corynebacterium glutamicum'' one important bacterial species annual production two million tons amino acids mainly l glutamate l lysine ref name burkovskia ref since bacteria ability synthesize antibiotics used medicinal purposes streptomyces make aminoglycoside antibiotics ref name puglisi joseph ref fermenting tanks yeast used brew beer variety biopolymers polysaccharides polyesters polyamides produced microorganisms microorganisms
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