Mupirocin (pseudomonic acid A, or Bactroban or Centany) is an antibiotic originally isolated from Pseudomonas fluorescens. It is used topically, and is primarily effective against Gram-positive bacteria. Mupirocin is bacteriostatic at low concentrations and bactericidal at high concentrations. Mupirocin has a unique mechanism of action, which is selective binding to bacterial isoleucyl-tRNA synthetase, which halts the incorporation of isoleucine into bacterial proteins. Because this mechanism of action is not shared with any other antibiotic, mupirocin has few problems of antibiotic cross-resistance.
An affect of oil spills on penguins is that their feathers will  lose its way to insulate the body, resulting in hypothermia. The  birds may even swallow the oil when trying â¦ to clean their feathers  that could lead to poisoning.1 person found this useful.irds are effected by oil spills as well as fish, and the oil travels up the food chain. Krill and other food eaten by fish, or further down the food chain are also affected. Generally their populations are lowered, creating food shortages for fish.
For the penguin species that live in the Southern Ocean, which encircles Antarctica, global climate change is also having significant impacts. In the Atlantic sector of the Southern Ocean, ocean warming and the melting of sea-ice are linked to the decline of the penguinsâ major food supplyâAntarctic krill.lthough penguins are commonly associated with Antarctica, penguins are found in a variety of habitats in the Southern Hemisphere. Eighteen different penguin species inhabit areas from Antarctica to the Equator.