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R7884 Sigma-Aldrich

Ribonuclease B from bovine pancreas

BioReagent, ≥50 Kunitz units/mg protein, ≥80% (SDS-PAGE)

Synonym: RNase B




Ribonuclease B from bovine pancreas is used in the digestion of RNA during cell cycle platform analysis.


100 mg in poly bottle

500 μg in poly bottle

Biochem/physiol Actions

Native RNase BS generated by subtilisin digestion of native RNase B comprising of amino acid residues 21-124 of RNase B, is sensitive to PNGase F digestion. Intramolecular N-glycans of bovine pancreatic RNase B function like chaperone. RNase B is found to be much faster than RNase A, while RNase A is liable to aggregate during regeneration. The stimulatory effect of Asn-oligosaccharide (which corresponds to the most predominant sugar chain of RNase B) reveals that the N-glycans of RNase B facilitates the transformation of bulky intermediates into folded, compact species.


Package size based on protein content

Preparation Note

Purified by affinity chromatography

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis (COA)

Please Enter a Lot Number

Certificate of Origin (COO)

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Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.
How do I get lot-specific information or a Certificate of Analysis?
The lot specific COA document can be found by entering the lot number above under the "Documents" section.
How should Ribonuclease B from bovine pancreas,Product R7884,be reconstituted?
This product may be reconstituted directly in water at a concentration of 1 mg/mL.
What is the extinction coefficient of Ribonuclease B from bovine pancreas (RNase B), Product R7884?
The E1% for this enzyme is 8.0 when measured at 280 nm.
What is the difference between RNase B, Ribonuclease B from bovine pancreas, Product R7884,and RNase A?
The amino acid sequence for the two enzymes is the same. The difference between them is that RNase B is a glycoprotein and contains 6 mannose residues and 2 residues of N-acetylglucosamine.
How do I find price and availability?
There are several ways to find pricing and availability for our products.Once you log onto our website, you will find the price and availability displayed on the product detail page.You can contact any of our Customer Sales and Service offices to receive a quote. USA customers: 1-800-325-3010 orview local office numbers.
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.
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Protocols & Articles


A Rapid, Streamlined Workflow for Glycan Sample Preparation and Analysis by LC-MSpngase fast asms

Comparison of PNGase F workflows for glycan release. The traditional workflow (top) involves multiple wash steps and an overnight digestion. With PNGase Fast (bottom), digestion is complete in 15 min...
Judy Boland, Amber Henry, Nicolas Caffarelli, Gordon Nicol, Jeffrey L. Turner, and Kevin Ray
Keywords: Aminations, Detergents, Digestions, Electrophoresis, High performance liquid chromatography, Mass spectrometry, PAGE, Reductions, Reductive aminations

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