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In trendy, each anaerobic and cardio unsaturated fatty acid synthesis will now not arise within the same device, however Pseudomonas aeruginosa and Vibrio ABE-1 are exceptions. While P. Aeruginosa undergoes by and large anaerobic desaturation, it also undergoes two aerobic pathways. One pathway utilizes a Δ9-desaturase (DesA) that catalyzes a double bond formation in membrane lipids. Another pathway makes use of two proteins, DesC and DesB, collectively to act as a Δ9-desaturase, which fits a double bond into a saturated fatty acid-CoA molecule. This second pathway is regulated by way of repressor protein DesT. DesT is also a repressor of fabAB expression for anaerobic desaturation while in presence of exogenous unsaturated fatty acids. This capabilities to coordinate the expression of the 2 pathways inside the organism.