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P9041 Sigma

Phosphodiesterase II from bovine spleen

lyophilized powder, ≥5.0 units/mg protein

Synonym: 3′-Exonuclease, Spleen exonuclease, Spleen phosphodiesterase



Related Categories 3.1.x.x Acting on esters, 3.x.x.x Hydrolases, Biochemicals and Reagents, Cell Biology, Enzyme Class Index,
form   lyophilized powder
foreign activity   5′-Nucleotidase ≤1% of base activity
storage temp.   −20°C
Gene Information   cow ... PDE2A(281971)


Analysis Note

Protein determined by biuret

Biochem/physiol Actions

Hydrolyzes RNA, RNA-Core, 3′-alkyl- and 3′-aryl-nucleoside phosphates, and polydeoxyribonucleotides with 3′-phosphate end groups to 3′-mononucleotides.
Polynucleotides having 5′-phosphomonoester end groups are not attacked.

The enzyme acts on poly(A), poly(U), and poly(I). Native DNA and poly(C) are quite resistant to the action of this enzyme.


10 units in glass bottle

25 units in poly bottle

Unit Definition

One unit will produce acid soluble nucleotides equivalent to a ΔA260 of 16 in 30 min at pH 6.5 at 37 °C, in a 2.0 mL reaction mixture. Substrate: RNA-Core. Actual A260 is measured on the supernatant after precipitation of the unhydrolyzed RNA with uranyl acetate-perchloric acid reagent.


Phosphodiesterase (PDE) is any enzyme that is used to breaks phosphodiester bonds. It is a membrane-bound glycoprotein that is used to catalyze the hydrolysis of various nucleotide polyphosphates. Phosphodiesterase II has been used in the enzymatic digestions of purified proteins such as the P8-dGMP complex. Bovine spleen phosphodiesterase has been used to digest N-cadherin.

The product has been used in the characterization of polynucleotide chain length, base composition, and identity of terminal nucleotide. The enzyme has also been used in excision of pyridyloxobutyl (POB) base adducts from DNA. Furthermore, it has been used along with micrococcal endonuclease to hydrolyze purified DNA to 3 -nucleoside monophosphates.

Price and Availability

All labs need water

Biomedical Applications
Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 


Certificate of Analysis

Certificate of Origin

Protocols & Articles

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


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