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Key Documents

P6236

Sigma-Aldrich

Pyroglutamate Aminopeptidase from Pyrococcus furiosus

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

Synonyme(s) :

L-Pyrrolidone carboxyl peptidase

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About This Item

Numéro de classification (Commission des enzymes):
Numéro CE :
Numéro MDL:
Code UNSPSC :
12352204
Nomenclature NACRES :
NA.54

Produit recombinant

expressed in E. coli

Niveau de qualité

Pureté

~90% (SDS-PAGE)

Forme

lyophilized powder

Activité spécifique

≥5.0 units/mg protein

Poids mol.

24.072 kDa by amino acid sequence
28 kDa by SDS-PAGE

Conditions d'expédition

dry ice

Température de stockage

−20°C

Description générale

Pyroglutamate Aminopeptidase from Pyrococcus furiosus, also called the deblocking aminopeptidase, is a 42 kDa protein and belongs to aminopeptidase A family. It shares sequence homology with aminopeptidase in the active site, with conserved zinc and cobalt binding residues.

Application

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

Actions biochimiques/physiologiques

Pyroglutamate Aminopeptidase (PGP 1) interacts with immunoglobulin, functions as inflammatory cytokine and modulates immune response. The levels PGP 1 is elevated during inflammation.
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.

Définition de l'unité

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

Forme physique

Lyophilized powder containing sodium phosphate

Notes préparatoires

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.

Pictogrammes

Health hazardExclamation mark

Mention d'avertissement

Danger

Mentions de danger

Classification des risques

Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3

Organes cibles

Respiratory system

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)


Certificats d'analyse (COA)

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Consulter la Bibliothèque de documents

New deblocking aminopeptidases from Pyrococcus horikoshii
Mori K and Ishikawa K
Bioscience, Biotechnology, and Biochemistry, 69(10), 1854-1860 (2005)
A Ultrasensitive Near-Infrared Fluorescent Probe Reveals Pyroglutamate Aminopeptidase 1 Can Be a New Inflammatory Cytokine
Gong Q, et al.
Advanced science (Weinheim, Baden-Wurttemberg, Germany), 5(4), 1700664-1700664 (2018)
Pyroglutamate aminopeptidase 1 may be an indicator of cellular inflammatory response as revealed using a sensitive long-wavelength fluorescent probe
Gong Q, et al.
Chemical Science, 7(7), 4694-4697 (2016)
Frédéric de Lamotte et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 849(1-2), 357-362 (2006-11-23)
Cassiicolin, a phytotoxin produced by the necrotrophic fungus Corynespora cassiicola, was purified to homogeneity from a rubber tree isolate. The optimized protocol involves reverse phase chromatography followed by size exclusion chromatography, with monitoring of the toxicity on detached rubber tree
William E Werner et al.
Analytical biochemistry, 342(1), 120-125 (2005-06-17)
Typically, the removal of pyroglutamate from the protein chains of immunoglobulins with the enzyme pyroglutamate aminopeptidase requires the use of chaotropic and reducing agents, quite often with limited success. This article describes a series of optimization experiments using elevated temperatures

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