RibonucleaseA (RNase A) is A non-specific endonuclease derived from bovine pancreas modified by protein engineering technology and obtained by yeast expression and purification. It does not contain bacterial endotoxins expressed by prokaryotes. Functionally, RNase A is an endonuclease that hydrolyzes the phosphodiester bond between the 5 '-ribose on the nucleoside and the phosphate group on the adjacent 3' -ribose pyrimidine nucleoside, resulting in the hydrolysis of the 2 ',3 '-cyclic phosphoric acid to the corresponding 3' -nucleoside phosphate. Therefore, single-stranded RNA can be specifically degraded at the sites of C and U nucleotide residues. RNase A is very stable. RNase A has a higher effect on single-stranded RNA. This product is widely used to remove RNA contamination from DNA or protein samples. This product is free from internal DNase and external DNase pollution, no protease pollution.