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R5125

Sigma-Aldrich

Ribonuclease A from bovine pancreas

Type III-A, ≥85% RNase A basis (SDS-PAGE), 85-140 Kunitz units/mg protein

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Synonym(s):
Pancreatic Ribonuclease, RNAsea, RNase A, Ribonucleate 3′-pyrimidinooligonucleotidohydrolase
CAS Number:
Enzyme Commission number:
EC Number:
MDL number:
NACRES:
NA.54

type

Type III-A

Quality Level

Assay

≥85% RNase A basis (SDS-PAGE)

form

lyophilized powder

specific activity

85-140 Kunitz units/mg protein

mol wt

~13,700

impurities

salt, essentially free

application(s)

diagnostic assay manufacturing

foreign activity

protease, essentially free

storage temp.

−20°C

InChI

1S/C9H14N4O3/c10-2-1-8(14)13-7(9(15)16)3-6-4-11-5-12-6/h4-5,7H,1-3,10H2,(H,11,12)(H,13,14)(H,15,16)

InChI key

CQOVPNPJLQNMDC-UHFFFAOYSA-N

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1 of 4

This Item
R5503R4875R5500
form

lyophilized powder

form

lyophilized powder

form

powder

form

lyophilized powder

specific activity

85-140 Kunitz units/mg protein

specific activity

50-100 Kunitz units/mg protein

specific activity

≥50 Kunitz units/mg protein

specific activity

75-125 Kunitz units/mg protein

mol wt

~13,700

mol wt

~13,700

mol wt

~13,700

mol wt

~13,700

impurities

salt, essentially free

impurities

salt, essentially free

impurities

salt, essentially free

impurities

salt, essentially free

application(s)

diagnostic assay manufacturing

application(s)

diagnostic assay manufacturing

application(s)

diagnostic assay manufacturing

application(s)

-

General description

RNase A, Ribonuclease A, is an endoribonuclease that cleaves the phosphodiester bonds of single strand RNA after pyrimidine nucleotides. It attacks at the 3′ phosphate end (For example 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. RNase A is a single chain polypeptide containing 4 disulfide bridges. In contrast to RNase B, it is not a glycoprotein. Ribonucleases do not hydrolyze DNA, because the DNA lacks 2′-OH groups essential for the formation of cyclic intermediates. RNase A can also hydrolyze RNA from protein samples. RNase A can be inhibited by alkylation of His12 and His119 and activated by potassium and sodium salts. RNAse is inhibited in the presence of heavy metal ions. RNase is also inhibited competitively by DNA.

Application

  • RNase A is used to remove RNA from DNA plasmid and genomic DNA preparations and protein samples.
  • RNase A is also used in RNA sequence analysis and protection assays.
  • RNase A has been used as a tool for computer-aided drug design.
  • RNase A supports the analysis of RNA sequences.
  • RNase A hydrolyze RNA contained in protein samples.
  • Purification of DNA is supported by RNase A.
Ribonuclease A is used to remove RNA from DNA plasmid preparations and protein samples. Ribonuclease A is used for RNase protection assays, to remove unspecifically bound RNA, analysis of RNA sequences, to hydrolyze RNA contained in protein samples, and the purification of DNA. Ribonuclease A from bovine pancreas has been used in a study to assess nickel-dependent oxidative cross-linking of a protein. Ribonuclease A from bovine pancreas has also been used in a study to investigate equilibrium constants for nonspecific binding of proteins to DNA.

Biochem/physiol Actions

Ribonuclease A is an endoribonuclease that cleaves single stranded RNA after pyrimidine nucleotides. It attacks at the 3′ phosphate end. Ribonucleases do not hydrolyze DNA, because the DNA lacks 2′-OH groups essential for the formation of cyclic intermediates. RNase can also hydrolyze RNA from protein samples. RNase A can be inhibited by alkylation of His12 and His119 and activated by potassium and sodium salts.

Features and Benefits

Our highly stable Ribonuclease A, RNase A, is suitable for removal of RNA, RNA sequencing, and DNA purification.

Preparation Note

Salt fractionated and chromatographically purified.

Analysis Note

Protein determined by E.

inhibitor

Product No.
Description
Pricing

Pictograms

Health hazard

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Resp. Sens. 1

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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J Yu et al.
Cytometry, 14(4), 428-432 (1993-01-01)
DNA content by flow cytometry was assessed in 47 cases from a series of 130 patients with non-small cell lung carcinoma (NSCLC) given radiation therapy postoperatively. This was done in an attempt to identify which patients might benefit, or not
E S Jenuwine et al.
Analytical biochemistry, 242(2), 228-233 (1996-11-15)
Quantitative zonal DNA affinity chromatography may be used to determine accurate equilibrium constants for the binding of proteins nonspecifically to DNA. Zonal quantitative affinity chromatography has not previously been applied to the determination of binding constants of proteins to DNA
Thomas Blasi et al.
Nature communications, 7, 10256-10256 (2016-01-08)
Imaging flow cytometry combines the high-throughput capabilities of conventional flow cytometry with single-cell imaging. Here we demonstrate label-free prediction of DNA content and quantification of the mitotic cell cycle phases by applying supervised machine learning to morphological features extracted from
G Gill et al.
Chemical research in toxicology, 10(3), 302-309 (1997-03-01)
A model protein, ribonuclease A (bovine pancreas), was examined for its ability to coordinate Ni2+ and promote selective oxidation. In the presence of a peracid such as monopersulfate, HSO5-, nickel induced the monomeric RNase A to form dimers, trimers, tetramers
S B delCardayré et al.
Protein engineering, 8(3), 261-273 (1995-03-01)
Bovine pancreatic ribonuclease A (RNase A) has been the object of much landmark work in biological chemistry. Yet the application of the techniques of protein engineering to RNase A has been limited by problems inherent in the isolation and heterologous

Protocols

This procedure may be used for determination of Ribonuclease A (RNase A) activity.

Chromatograms

application for HPLC

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