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P6236 Sigma

Pyroglutamate Aminopeptidase from Pyrococcus furiosus

recombinant, expressed in E. coli, ~90% (SDS-PAGE), ≥5.0 units/mg protein

Synonym: L-Pyrrolidone carboxyl peptidase



Related Categories 3.4.x.x Peptidases, 3.x.x.x Hydrolases, Application Index, Biochemicals and Reagents, Enzyme Class Index,
recombinant   expressed in E. coli
assay   ~90% (SDS-PAGE)
mol wt   mol wt 24.072 kDa by amino acid sequence
  mol wt 28 kDa by SDS-PAGE
shipped in   dry ice
storage temp.   −20°C



Thermostable aminopeptidase that liberates N-terminal pyroglutamic acid from proteins and peptides prior to Edman degradation.

Pyroglutamate Aminopeptidase, from Pyrococcus furiosus is a recombinant, thermostable aminopeptidase that is expressed in Escherichia coli. It is used to cleave pyroglutamic acid which allows analysis of N-terminal sequences of peptides.

The enzyme from Sigma has been used for the removal of pyroglutamate (pGlu) N-terminal blocking group, under reduced conditions, prior to N-terminal sequencing of purified cassiicolin.

Preparation Note

Reconstitute the vial of enzyme with 50 μl of 50 mM sodium phosphate, pH 7.0, with 10 mM DTT and 1 mM EDTA. The reconstituted solution should be stored at -20 °C.

Unit Definition

One unit will hydrolyze 1 μmol of pyroglutamate p-nitroanilide per minute at pH 7.0 at 37 °C.

Physical form

Lyophilized powder containing sodium phosphate

Biochem/physiol Actions

This enzyme is specific for N-terminal pyroglutamic acids. It cleaves the N-terminal pyroglutamic acid from proteins and peptides prior to Edman degradation. The optimal temperature range is 95 to 100 °C and the optimal pH range is 6.0 to 9.0.

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Safety & Documentation

Safety Information

Signal word 
Hazard statements 
Precautionary statements 
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

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