6.2.1.49 malfunction deletion of the fadD28 gene leads to a phenolic glycolipid-/phthiocerol dimycocerosate-deficient phenotype 738537 6.2.1.49 malfunction disruption of the fadD28 gene produces antibiotic hypersusceptibility and increases the cell envelope permeability 740467 6.2.1.49 physiological function the enzyme is involved in the synthesis of the virulence factor dimycocerosyl phthiocerol 740601