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R4642 Sigma

Ribonuclease A from bovine pancreas

(Solution of 50% glycerol, 10mM Tris-HCL pH 8.0)

Synonym: Pancreatic Ribonuclease, RNase A, Ribonuclease I, Ribonucleate 3′-pyrimidinooligonucleotidohydrolase

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Properties

Related Categories 3.1.x.x Acting on esters, 3.x.x.x Hydrolases, Application Index, Biochemicals and Reagents, Enzyme Class Index,
grade   for molecular biology
form   (Solution of 50% glycerol, 10mM Tris-HCL pH 8.0)
mol wt   mol wt 13.7 kDa
  mol wt ~13,700
concentration   20-40 mg/mL
suitability   suitable for
foreign activity   Endonuclease and exonuclease, none detected
  NICKase and DNase, none detected
storage temp.   −20°C

Description

Components

RNase A is supplied as a solution of 50% glycerol containing 10 mM Tris-HCl (pH 8.0).

Analysis Note

Protein determined by E1%/280.

Application

Suitable for:
• RNase protection assays
• Removal of unspecifically bound RNA
• Analysis of RNA sequences
• Hydrolysis of RNA contained in protein samples
• Plasmid DNA purification

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.

Features and Benefits

• RNase protection assays
• Remove unspecifically bound RNA
• Analysis of RNA sequences
• Hydrolyze RNA contained in protein samples
• Purification of DNA

General description

RNase A is an endoribonuclease that attacks at the 3’OHphosphate of a pyrimidine nucleotide. The sequence of pG-pG-pC-pA-pG will be cleaved to give pG-pG-pCp and A-pG. The highest activity is exhibited with single stranded RNA.

Other Notes

Activators of RNase A include potassium and sodium salts. RNase A can be inhibited by alkylation of His12 or His119.

Unit Definition

A major application for RNase A is the removal of RNA from preparations of plasmid DNA. For this application, DNase free RNase A is used at a final concentration of 10 ug/mL.

Boiling stock solutions of this RNase A product to inactivate residual DNase is not necessary and may cause precipitation of RNase and possible loss of enzymatic activity. If an RNase A solution is heated at a neutral pH, precipitation will occur. When heated at a lower pH, some precipitation may occur because of protein impurities that are present.

Price and Availability

Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Precautionary statements 
RIDADR 
NONH for all modes of transport
WGK Germany 
2
Protocols & Articles

Protocols

Enzymatic Assay of Ribonuclease A (EC 3.1.27.5)

This procedure may be used for determination of Ribonuclease A (RNase A) activity. The Spectrophotometric Stop Rate Determination [Absorbance at 300 nm (A300), Light path = 1 cm] is based on the foll...

GenElute Plant Genomic DNA Miniprep Kit Protocol (G2N10, G2N70, G2N350)

Several micrograms of DNA can be obtained from up to 100 mg of fresh tissue or 10 mg of freeze-dried material in less than an hour. The purified DNA is greater than 20 kb in length and can be used in...
Keywords: AGE, Amplification, Cell disruption, Centrifugation, Electrophoresis, Evaporation, Filtration, Gel electrophoresis, Molecular biology, Phase transitions, Polymerase chain reaction, Precipitation, Purification

Selecting Correctly Expressing Recombinants

Blue / White colony screening is a strategy to quickly and easily distinguish between recombinant and non-recombinant colonies. It requires a special vector and a special strain of E. coli. It is par...
Keywords: AGE, Amplification, Antibiotics, Cell disruption, Centrifugation, Cloning, Degradations, Detergents, Diagnostic, Digestions, Electrophoresis, Gel electrophoresis, Molecular biology, Peptide synthesis, Phase transitions, Polymerase chain reaction, Precipitation, Purification, Sequencing, Transfection, transformation

Related Content

Enzymes & Proteins

Application Index | Enzyme Index | Substrate Index | Inhibitor Index | Cofactor Index | Lectin Index
Keywords: Cell signaling, Diagnostic, Drug discovery, Molecular biology

Peer-Reviewed Papers
15

References

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