Term Name:	polymyxin
Synonyms:	polymixin, polymycin, polymyxins
Definition:	Polymyxins are antibiotics with a general structure consisting of a cyclic peptide with a long hydrophobic tail. They disrupt the structure of the bacterial cell membrane by interacting with its phospholipids. Polymyxins are produced by the Gram-positive bacterium Bacillus polymyxa and are selectively toxic for Gram-negative bacteria.
Ontology:	ChEBI [CHEBI:59062]  ( EBI )