| 应用 |
Ribonuclease A is used to remove RNA from DNA plasmid preparations and protein samples. It is also used in RNA sequence analysis and protection assays. |
| 产品介绍 |
Pancreatic ribonuclease (RNase I) catalyzes cleavage of the phosphodiester bond between the 5'-ribose of a nucleotide and the phosphate group attached to the 3'-ribose of an adjacent pyrimidine nucleotide forming a 2',3'-cyclic phosphate which may then be hydrolyzed to the corresponding 3'-nucleoside phosphate. Ribonuclease A has a molecular weight of 13,700 daltons. It operates in an optimum pH range of 7.0-7.5.
Ribonuclease B has a molecular weight of 14,700 ± 300 daltons. It is a glycoprotein which possesses an amino acid composition indistinguishable from that of RNase A. It contains 6 residues of mannose and 2 residues of N-acetylglucosamine per molecule. It is a glycosylated derivative of RNase A.
Ribonuclease is inhibited by heavy metal ions and it is competitively inhibited by DNA. Since Molecular Biology Grade RNase A (Product R128619) is essentially free of DNase and protease activities, this product is useful in removing RNA from DNA in nucleic acid work and where other enzymes are used or where intact proteins must be recovered. |
| 备注 |
Molecular Biology Grade. A solution containing approximately 5 mg/ml in 50% glycerol. Prepared specifically for use in purifying DNA plasmids. Each lot is assayed for DNase and protease. |
| 别名 |
RNase A;核糖核酸 3′-嘧啶寡核苷酸水解酶;核糖核酸酶 I;胰核糖核酸酶RNase A;Ribonuclease I;Pancreatic Ribonuclease;Ribonucleate 3′-pyrimidinooligonucleotidohydrolase |
