bacitracin
bacitracin , noun
[Bacillus + Margaret Tracy, (a child whose tissues contained Bacillus subtilis) + -in. RHUD.]
It is produced by Bacillus subtilis and Bacillus licheniformis, and as produced commercially is composed of several closely related substances. The predominant component, Bacitracin A, has a formula C60H103N17O16S, and contains D-ornithine, D-phenylalanine and D-glutamine residues as well as the L-isomers of leucine, isoleucine, histidine, asparagine and aspartic acid.
a polypeptide antibacterial antibiotic of known chemical structure effective against several types of Gram-positive organisms, and usually used topically for superficial local infection. — RHUD