On the ornithinyl ester of phosphatidylglycerol of Mycobacterium 607

Ornithinyl ester of phosphatidyl glycerol was found to accumulate in Mycobacterium 607 under acidic conditions (pH 5.6) of growth or in cultures of ultraviolet-irradiated (320 to 420 nm) bacilli. There was a corresponding decrease in cardiolipin content of the organisms under these conditions.