Recombinant Human Trypsin 2/PRSS2 Protein, CF

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Product Details

Summary
Reactivity HuSpecies Glossary
Applications Enzyme Activity
Format
Carrier-Free

Order Details

Recombinant Human Trypsin 2/PRSS2 Protein, CF Summary

Details of Functionality
Measured by its ability to cleave the fluorogenic peptide substrate, Mca-RPKPVE-Nval-WRK(Dnp)-NH2 (Catalog # ES002). The specific activity is >8,000 pmol/min/µg, as measured under the described conditions.
Source
Mouse myeloma cell line, NS0-derived human Trypsin 2/PRSS2 protein
Ala16-Ser247, with a C-terminal 10-His tag
Accession #
N-terminal Sequence
Ala16
Structure / Form
Pro form
Protein/Peptide Type
Recombinant Enzymes
Gene
PRSS2
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Note
<1.0 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Theoretical MW
26 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
34 kDa, reducing conditions

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 HCl and NaCl.
Purity
>95%, by SDS-PAGE under reducing conditions and visualized by silver stain
Assay Procedure
  • Activation Buffer: 50 mM Tris, 10 mM CaCl2, 150 mM NaCl, 0.05% (w/v) Brij-35, pH 7.5 (TCNB)
  • Assay Buffer: 0.1 M Tris, 0.15 M NaCl, 10 mM CaCl2, 0.05% Brij-35 (w/v), pH 8.0
  • Recombinant Human Enteropeptidase/Enterokinase (rhEnterokinase) (Catalog # 1585-SE)
  • Recombinant Human Trypsin 2/PRSS2 (rhTrypsin 2) (Catalog # 3586-SE)
  • Bacterial Thermolysin (Thermolysin) (Catalog # 3097-ZN)
  • 1,10 Phenanthroline (Sigma, Catalog # 320056), 0.6 M stock in DMSO
  • Substrate II: MCA-Arg-Pro-Lys-Pro-Val-Glu-Nva-Trp-Arg-Lys(DNP)-NH2 (Catalog # ES002), 2 mM stock in DMSO
  • F16 Black Maxisorp Plate (Nunc, Catalog # 475515)
  • Fluorescent Plate Reader (Model: SpectraMax Gemini EM by Molecular Devices) or equivalent
Activate rhEnterokinase with Thermolysin.
  1. Dilute rhEnterokinase to 100 µg/mL in Activation Buffer.
  2. Dilute Thermolysin to 3.16 µg/mL in Activation Buffer.
  3. Mix 50 µL of 100 µg/mL rhEnterokinase with 50 µL of 3.16 µg/mL Thermolysin.
  4. Incubate reaction at 37 °C for 30 minutes.
  5. Stop reaction by adding 100 µL of 20 mM 1, 10 Phenanthroline to the reaction.
Activate rhTrypsin 2 with activated rhEnterokinase.
  1. Dilute activated rhEnterokinase to 0.4 µg/mL in Assay Buffer.
  2. Dilute rhTrypsin 2 to 200 µg/mL in Assay Buffer.
  3. Mix 25 µL of 0.4 µg/mL rhEnterokinase with 25 µL of 200 µg/mL rhTrypsin 2.
  4. Incubate reaction at room temperature for 30 minutes.
Perform reaction.
  1. Dilute activated rhTrypsin 2 to 0.05 µg/mL in Assay Buffer.
  2. Dilute substrate to 20 µM in Assay Buffer.
  3. In a plate load 50 µL of 0.05 μg/mL of rhTrypsin 2 and include a Substrate Blank of 50 µL Assay Buffer.
  4. Start the reaction by adding 50 µL of 20 µM Substrate to wells.
  5. Read at excitation and emission wavelengths of 320 nm and 405 nm (top read), respectively in kinetic mode for 5 minutes.
  6. 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 MCA-Pro-Leu-OH (Bachem, Catalog # M-1975).

Per Well:
  • rhTrypsin 2: 0.0025
  • Substrate: 10 μM

Notes

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

Alternate Names for Recombinant Human Trypsin 2/PRSS2 Protein, CF

  • Anionic trypsinogen
  • EC 3.4.21
  • EC 3.4.21.4
  • MGC111183
  • MGC120174
  • MGC120175
  • protease serine 2 preproprotein
  • protease, serine, 2 (trypsin 2)
  • protease, serine, 2, preproprotein
  • PRSS2
  • Serine protease 2
  • Tesp4
  • TRY2TRY8
  • TRY8
  • TRYP2
  • Trypsin 2
  • Trypsin II
  • trypsin-2
  • trypsinogen 2
  • Trypsinogen 20

Background

Human Trypsin 2, encoded by the PRSS2 gene, is also known as anionic Trypsin (1). Accounting for approximately 1/3 of the total trypsin content in the pancreatic juice, it is one of the trypsins produced in the pancreas. It consists of a signal peptide (residues 1‑15), a pro region (residues 16‑23), and a mature chain (residues 24‑247). Trypsin 2 is synthesized as a zymogen and secreted into the duodenal lumen, where it is activated by enteropeptidase (2). It plays a central role in digestion and activating other pro-enzymes. In human pancreatic diseases and chronic alcoholism, it is up-regulated (3).

  1. Emi, M. et al. (1986) Gene. 41:305.
  2. Halfon, S. et al. (2004) in Handbook of Proteolytic Enzymes (ed. Barrett, et al.) pp. 1483-1488, Academic Press, San Diego.
  3. Rinderknecht, H. et al. (1979) Gut. 20:886.

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Bioinformatics

Gene Symbol PRSS2
Uniprot