NCIt definition : The calcium salt form of mupirocin, a natural crotonic acid derivative extracted from
Pseudomonas fluorescens. Mupirocin inhibits bacterial protein synthesis by specific
reversible binding to bacterial isoleucyl tRNA synthase. With excellent activity against
gram-positive staphylococci and streptococci, it is primarily used for treatment of
primary and secondary skin disorders, nasal infections, and wound healing. (NCI04);