Definition :
Flexirubins are a unique type of pigment produced by various bacteria species characterised by a common structure comprising non-isoprenoid omega-substituted polyene carboxylic acids esterified with 2,5-dialkylated resorcinols.
Definition :
A family of over forty siderophoric non-ribosomal peptides containing a dihydroxyquinoline moiety produced by several Pseudomonas species.