Nuclease P1 from Penicillium citrinum
SIGMA/N8630 - lyophilized powder, ≥200 units/mg protein (E1%/280 , 3′-5′-Phosphodiesterase)
Synonym: 3′-Phosphohydrolase; Nuclease 5′-Nucleotidehydrolase; Endonuclease P1
CAS Number: 54576-84-0
MDL Number: MFCD00131010
Product Type: Chemical
| application(s) | cell analysis |
| biological source | Penicillium citrinum |
| form | lyophilized powder |
| mol wt | 42-50 kDa |
| packaging | vial of ≥250 units (using RNA substrate) |
| Quality Level | 200 ![]() |
| secondary activity | ≥1,000 units/mg protein 3′-nucleotidase |
| specific activity | ≥200 units/mg protein (E |
| storage temp. | 2-8°C |
| suitability | suitable for molecular biology |
| technique(s) | DNA extraction: suitable |
| DNA purification: suitable |
| Application: | • Nuclease P1 cleave of single stranded DNA or RNA to 5’ mononucleotides • Nuclease P1 supports DNA damage and modification research • Nucleic acids base composition and structural analysis can be done by Nuclease P1 • Nuclease P1 has historically been used for the industrial production of 5′-mononucleotides from yeast RNA. • Removal of nucleic acids through protein purification can be done by Nuclease P1 • Nuclease P1 is a key reagent for the development of methods for studies involving t-RNA dependent amino acid biosynthesis and t-RNA dependent trans-amidation • Nuclease P1 from Penicillium citrinum has been used in a study to assess crystal structures using ammonium sulphate or polyethylene glycol 4000 as a precipitating agent. • Nuclease P1 was used in a study to investigate a method for the direct sequence analysis 20-25 nucleotides from the terinini of 5′ or 3′ end group labeled RNA. • Nuclease P1 is used to improve the sensitivity of a 32P-labeling method for the detection of DNA adducts. The enzyme has an optimal temperature of approximately 70°C, but for a long incubation, a temperature below 60°C is more suitable. It is stable in the pH range of 5 - 8. |
| Application: | The enzyme has an optimal temperature of approximately 70 °C, but for a long incubation, a temperature below 60 °C is more suitable. It is stable in the pH range of 5 - 8. |
| Biochem/physiol Actions: | Catalyzes the nonspecific endonucleolytic cleavage of single stranded DNA and RNA to yield nucleoside 5′-phosphates and 5′-phosphooligonucleotide |
| Features and Benefits: | Our highly active Nuclease P1 is tested for its 3′- 5′ - Phosphodiesterase Activity and 3′- Nucleotidase Activity and is the most active Nuclease P1 in the market |
| General description: | A zinc dependent glycoprotein consisting of 270 amino acid residues. Molecular mass: 42-50 kDa. |
| General description: | Nuclease P1 is one of the most commonly known single-strand specific nucleases in molecular biology; Nuclease P1 is a single stranded specific endoduclease (of ssDNA or ssRNA). Nuclease P1 can also cleave single-stranded regions in double-stranded nucleic acids. Nuclease P1 from Penicillium citrinum is a zinc-dependent endonuclease that exhibits increased activity in the presence of low concentrations of urea. Nuclease P1 selective activity has found useful applications in studies on nucleic acid structure. |
| Other Notes: | 3′-5′-Phosphodiesterase: One unit will liberate 1.0 μmole of acid soluble nucleotides from RNA per min at pH 5.3 at 37 °C. 3′-Nucleotidase: One unit will hydrolyze 1.0 μmole of orthophosphate from 3′-AMP per min at pH 7.2 at 37 °C. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| activity | specific activity: ≥200 units/mg protein (E |
| Storage Temp. | 2-8°C |
| Enzyme Commission (EC) Number | 3.1.30.1 ( BRENDA ![]() ![]() |
| UNSPSC | 12352204 |

