Ultrasomes are one of the vesicular systems in which UV-endonuclease enzymes encapsulated in multilamellar liposomes. The endonuclease is from Micrococcus luteus. Endonucleases are a kind of enzymes that cleave the phosphodiester bond within a polynucleotide chain, such as deoxyribonuclease I, cut DNA relatively nonspecifically, while some restriction endonucleases or restriction enzymes, cleave only at very specific nucleotide sequences.
