Phospholipase involved in the biosynthesis of the antibiotic bacilysocin. It probably catalyzes the hydrolysis of the 2-sn-acyl moiety of phosphatidylglycerol to produce bacilysocin (lysophosphatidylglycerol). Is also able to catalyze the hydrolysis reaction of one acyl bond in phosphatidylcholine in vitro (actual cleavage point is unknown), resulting in lysophosphatidylcholine. Antibiotic biosynthesis; bacilysocin biosynthesis. Cells lacking this gene entirely lose the ability to produce bacilysocin and display a 10-fold reduction in the ability to form spores. Belongs to the AB hydrolase superfamily.