Pseudomonas denitrificans

Bacteria
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These bacteria make vitamins that we can eat to be healthy and grow.

Graphic by Sandra Blacksandra.black/
Pseudomonas denitrificans is a Gram-negative aerobic bacterium that performs denitrification. It was first isolated from garden soil in Vienna, Austria. It overproduces cobalamin (vitamin B12), which it uses for methionine synthesis[1] and it has been used for manufacture of the vitamin.[2] Scientists at Rhône-Poulenc Rorer took a genetically engineered strain of the bacteria, in which eight of the cob genes involved in the biosynthesis of the vitamin had been overexpressed, to establish the complete […] read more