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Recombinant Human PGPEP-1 Protein, CF

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Product Details

Summary
Reactivity HuSpecies Glossary
Applications Enzyme Activity
Format
Carrier-Free

Order Details

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Recombinant Human PGPEP-1 Protein, CF Summary

Details of Functionality
Measured by the hydrolysis of pyroglutamyl-AMC. The specific activity is >9,500 pmol/min/μg, as measured under the described conditions.
Source
E. coli-derived human PGPEP-1 protein
Met1-His209, with a C-terminal 6-His tag
Accession #
N-terminal Sequence
Met1
Protein/Peptide Type
Recombinant Enzymes
Gene
PGPEP1
Purity
>90%, by SDS-PAGE under reducing conditions and visualized by Colloidal Coomassie® Blue stain at 5 μg per lane
Endotoxin Note
<1.0 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Enzyme Activity
Theoretical MW
24 kDa.
Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors.
SDS-PAGE
24-26 kDa, reducing conditions
Publications
Read Publication using
6278-CY in the following applications:

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt, -70 °C as supplied.
  • 3 months, -70 °C under sterile conditions after opening.
Buffer
Supplied as a 0.2 μm filtered solution in Tris, NaCl, Glycerol and DTT.
Purity
>90%, by SDS-PAGE under reducing conditions and visualized by Colloidal Coomassie® Blue stain at 5 μg per lane
Assay Procedure
  • Assay Buffer: 50 mM Tris, 5 mM DTT, pH 9.0
  • Recombinant Human PGPEP-1 (rhPGPEP-1) (Catalog # 6278-CY)
  • Substrate: L-pyroglutamic acid-AMC (Pyr-AMC) (Bachem, Catalog # I-1300), 10 mM stock in DMSO
  • F16 Black Maxisorp Plate (Nunc, Catalog # 475515)
  • Fluorescent Plate Reader (Model: SpectraMax Gemini EM by Molecular Devices) or equivalent

1.  Dilute rhPGPEP-1 to 0.1 ng/μL in Assay Buffer.
2.  Dilute Substrate to 100 μM in Assay Buffer.
3.  Load into a plate 50 μL of 0.1 ng/μL rhPGPEP-1, and start the reaction by adding 50 μL of 100 μM Substrate. For Substrate Blanks, load 50 μL of Assay Buffer and 50 μL of 100 μM Substrate.
4.  Read plate at excitation and emission wavelengths of 380 nm and 460 nm, respectively, in kinetic mode for 5 minutes.
5.  Calculate specific activity:

     Specific Activity (pmol/min/µg) =

Adjusted Vmax* (RFU/min) x Conversion Factor** (pmol/RFU)
amount of enzyme (µg)

     *Adjusted for Substrate Blank
     **Derived using calibration standard 7-Amino, 4-Methyl Coumarin (Sigma, Catalog # A-9891).

Per Well:
  • rhPGPEP-1: 0.005 μg
  • Substrate: 50 μM

Notes

Coomassie is a registered trademark of Imperial Chemical Industries Ltd.



This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for Recombinant Human PGPEP-1 Protein, CF

  • EC 3.4.19.3
  • PAP-I
  • Pcp
  • PGPEP1
  • PGPEP-1
  • PGPIFLJ20208
  • PGP-IPAP-I
  • PGPMGC10812
  • Pyroglutamyl aminopeptidase I
  • pyroglutamyl-peptidase 1
  • pyroglutamyl-peptidase I5-oxoprolyl-peptidase
  • Pyrrolidone-carboxylate peptidase

Background

Pyroglutamyl peptidase-1 (PGPEP-1) is an omega peptidase which removes pyroglutamyl residues from the amino termini of peptides and proteins (1). It is a cytosolic cysteine peptidase that is expressed in most cell types (2). The enzyme requires a thiol‑reducing agent for activity (3). PGPEP-1 is potentially involved in the inactivation of biologically active peptides that possess an amino terminal pyroglutamyl group (3). Examples of such peptides include neurotensin, luteinizing hormone releasing hormone, and thyrotropin-releasing hormone.
  1. Kilbane Z. et al. (2007) Mol. Cell. Biochem. 297:189.
  2. Cummins P.M. and B. O'Connor (1998) Biochim. Biophys. Acta. 1429:1.
  3. Dando P.M. et al. (2003) Protein Express. Purif. 28:111.

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Publications for PGPEP-1 (6278-CY)(1)

We have publications tested in 1 confirmed species: Human.

We have publications tested in 1 application: Enzyme Assay.


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Bioinformatics

Gene Symbol PGPEP1
Uniprot