Complements a mutant that does not degrade PHA; might be a lipase. Pseudomonas oleovorans accumulates poly(3-hydroxyalkanoates) after growth on medium chain length hydrocarbons. Large amounts of this polyester are synthesized when cells are grown under nitrogen-limiting conditions. When nitrogen is resupplied in the medium, the accumulated PHA is degraded. Belongs to the AB hydrolase superfamily. Lipase family.