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Ribonuclease A
Source: Bovine Pancrease
EC:3.1.27.5
DESCRIPTION
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 has been further purified by affinity chromatography method to remove trace contaminating proteases.
SPECIFICATION 

Item

Specification

Method

Appearance

White to pale yellow lyophilized powder

 

Appearance of solution

Not more opalescent than ref. suspension II

USP

Loss on drying

≤ 5.0%

USP

DNase contamination

Not detectable

Sigma

Activity

≥ 50 Kunitz units/mg

Sigma

STORAGE
  Store in an airtight container, at a temperature of 2°C to 8°C. 

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