Pseudomonas fluorescens may be a common gram-negative, rod-shaped bacteria. It belongs to the genus Pseudomonas genus; 16S rRNA analysis has placed P. fluorescens within the P. fluorescens cluster inside the genus, to that it lends its name. Heat-stable lipases and proteases square measure created by P. fluorescens and alternative similar pseudomonads. These enzymes cause milk to spoil, by inflicting bitterness, casein breakdown, and gumminess thanks to production of slime and action of proteins. By culturing P. fluorescens, mupirocin (an antibiotic) are often created, that has been found to be helpful in treating skin, ear, and eye disorders. Mupirocin free acid and its salts and esters square measure agents presently utilized in creams, ointments, and sprays as a treatment of methicillin-resistant coccus aureus infection. genus Pseudomonas fluorescens is associate uncommon reason for malady in humans, and typically affects patients with compromised immune systems (e.g., patients on cancer treatment).