Recombinant Cynomolgus Fibroblast Activation Protein alpha

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Recombinant Cynomolgus Fibroblast Activation Protein (Catalog # 10278-SE) is measured by its ability to convert the substrate benzyloxycarbonyl-Gly-Pro-7-amido-4-methylcoumarin (Z-GP-AMC) to Z-Gly-Pro and ...read more

Product Details

Summary
Reactivity Pm-CmSpecies Glossary
Applications Enzyme Activity
Format
Carrier-Free

Order Details

Recombinant Cynomolgus Fibroblast Activation Protein alpha Summary

Details of Functionality
Measured by its ability to convert the substrate benzyloxycarbonyl-Gly-Pro-7-amido-4-methylcoumarin (Z-GP-AMC) to Z-Gly-Pro and 7-amino-4-methylcoumarin (AMC). The specific activity is >2500 pmol/min/μg, as measured under the described conditions.
Source
Chinese Hamster Ovary cell line, CHO-derived cynomolgus monkey Fibroblast Activation Protein alpha/FAP protein
Leu26-Asp760
Accession #
N-terminal Sequence
Leu26
Protein/Peptide Type
Recombinant Enzymes
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Note
<0.10 EU per 1 μg of the protein by the LAL method.

Applications/Dilutions

Dilutions
  • Enzyme Activity
Theoretical MW
85 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
87-94 kDa, under reducing conditions

Packaging, Storage & Formulations

Storage
Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 6 months from date of receipt, -20 to -70 °C as supplied.
  • 3 months, -20 to -70 °C under sterile conditions after opening.
Buffer
Supplied as a 0.2 μm filtered solution in Tris, NaCl and Glycerol.
Purity
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Assay Procedure
  • Assay Buffer: 50 mM Tris, 1 M NaCl, 1 mg/mL BSA, pH 7.5
  • Recombinant Cynomolgus Monkey Fibroblast Activation Protein  alpha /FAP (cynoFAP) (Catalog # 10278-SE)
  • Substrate: Z-Gly-Pro-AMC (Bachem, Catalog # I-1145), 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 rcynoFAP to 0.2 µg/mL in Assay Buffer.
  2. Dilute Substrate to 100 µM in Assay Buffer.
  3. Load in plate 50 µL of 0.2 µg/mL rcynoFAP, and start the reaction by adding 50 µL of 100 µM Substrate. Include a Substrate Blank containing 50 µL Assay Buffer and 50 µL of 100 µM Substrate.
  4. Read at excitation and emission wavelengths of 380 nm and 460 nm (top read), respectively, in kinetic mode of 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 7-amino, 4-Methyl Coumarin (Sigma, Catalog # A9891).

Per Well:
  • rcynoFAP: 0.01 µg
  • Substrate: 50 µM

Notes

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

Alternate Names for Recombinant Cynomolgus Fibroblast Activation Protein alpha

  • 170 kDa melanoma membrane-bound gelatinase
  • DKFZp686G13158
  • DPPIV
  • EC 3.4.21.-
  • FAP
  • FAPA
  • Fibroblast Activation Protein alpha
  • fibroblast activation protein, alpha
  • Integral membrane serine protease
  • Seprase
  • vibronectin

Background

FAP (also known as seprase) is a 95 kDa Type II transmembrane serine protease that forms a homodimer and is structurally related to the dipeptidyl peptidase IV (DPPIV/CD26) family with a short cytoplasmic tail, a single transmembrane domain, and an extracellular domain that contains the active site (1-3). Within the extracellular domain, cynomolgous FAP shares 99.6% and 89.8% amino acid (aa) sequence identity with human and mouse FAP, respectively. It exhibits dipeptidyl peptidase activity with substrate specificity similar to DPPIV, which is specific for N-terminal Xaa-Pro sequences (4, 5). FAP is also an endopeptidase that can degrade Gelatin, Collagens I and IV, Fibronectin, and Laminin (1, 4, 5) as well as several peptide hormones (e.g. Neuropeptide Y, Brain Natriuretic Peptide, Substance P, Peptide YY, and Incretins) (6). FAP is also known to interact with several surface molecules to play roles in cell signaling, cell invasion and migration (3). Although not detectible in normal tissues, FAP is elevated in activated stromal fibroblasts, tumor-associated macrophages, activated hepatic stellate cells and myofibroblasts during pathological conditions that include tissue remodeling such as most types of cancer, wound healing, arthritis, atherosclerosis, and fibrosis (1, 3, 4, 7-9). Targeting FAP with vaccines, antibodies, or pharmacologics impairs tumor progression in several cancer models making it a promising immunotherapy target (9-12).
  1. Zi, F. et al. (2015) Mol. Med. Rep. 11:3203.
  2. Pineiro-Sanchez, M.L. et al. (1997) J. Biol. Chem. 272:7595.
  3. Lay, A.J. et. al. (2019) Front. Biosci. 24:1.
  4. Park, J.E. et al. (1999) J. Biol. Chem. 274:36505.
  5. Aertgeerts, K. et al. (2005) J. Biol. Chem. 280:19441.
  6. Keane, F.M. et al. (2011) FEBS J. 278:1316.
  7. Rettig, W.J. et al. (1988) Proc. Natl. Acad. Sci. USA 85:3110.
  8. Bauer, S. et al. (2006) Arthritis Res. 8:R171.
  9. Jiang, G.M. et al. (2016) Oncotarget 7:33472.
  10. Cheng, J.D. et al. (2002) Cancer Res. 62:4767.
  11. Kraman, M. et al. (2010) Science 330:827.
  12. Busek, P. et al. (2018) Front. Biosci. 23:1933.

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