19924
Pyroglutamate Aminopeptidase from Pyrococcus furiosus, recombinant from E. coli
7-13 mU (per vial)
Synonym(s):
Pyrase, Pyroglutamyl-Peptidase I, Pyrrolidone Carboxyl Peptidase
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About This Item
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recombinant
expressed in E. coli
form
lyophilized
specific activity
7-13 mU (per vial)
mol wt
Mr ~28000
storage temp.
−20°C
Related Categories
Packaging
package of 0.01 Unit
Unit Definition
1 U corresponds to the amount of enzyme which hydrolyzes 1 μmol Pyroglutamate-p-nitroanilide per minute at pH 7.0 and 37 °C
Analysis Note
enzyme activity: the optimum temperature is 95-100 °C (the enzyme is stable up to 75 °C), the optimum pH is 6-9 (stable from pH 6-9). Inhibitors: PCMB, Hg+.
Other Notes
An enzyme that removes pyroglutamic acid (pGlu) from pGlu-peptide and proteins; employed in Edman degradation.
Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Resp. Sens. 1 - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Certificates of Analysis (COA)
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J Mozdzanowski et al.
Analytical biochemistry, 260(2), 183-187 (1998-07-11)
For larger proteins, efficient deblocking prior to Edman sequencing is especially important to obtain quality, extended sequencing data which is limited by the stepwise accumulation of background from the random acid hydrolysis of the protein. Therefore, any portion that remains
Y Shimada et al.
Journal of biochemistry, 106(3), 383-388 (1989-09-01)
The cDNA clone of Geotrichum candidum (Geo.) lipase was isolated from the Geo. cDNA library by colony hybridization using 32P-labeled oligonucleotides corresponding to a partial amino acid sequence of this enzyme. The nucleotide sequence of the cDNA determined by the
A C Awadé et al.
Proteins, 20(1), 34-51 (1994-09-01)
Pyrrolidone carboxyl peptidase (EC 3.4.11.8) is an exopeptidase commonly called PYRase, which hydrolytically removes the pGlu-proteins. pGlu also known as pyrrolidone carboxylic acid may occur naturally by an enzymatic procedure or may occur as an artifact in proteins or peptides.
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
Alienke J Monsuur et al.
European journal of gastroenterology & hepatology, 18(6), 637-644 (2006-05-17)
Coeliac disease (CD) is an enteropathy caused by an immune reaction towards wheat gluten and similar proteins from barley and rye. It was shown that some gluten peptides spontaneously form N-terminal L-pyroglutamate. This modification could potentially make gluten more resistant
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