Recombinant Mouse Persephin Protein

Carrier Free

Catalog # Availability Size / Price Qty
2479-PS-010/CF

With Carrier

Catalog # Availability Size / Price Qty
2479-PS-010
R&D Systems Recombinant Proteins and Enzymes
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Recombinant Mouse Persephin Protein Summary

Product Specifications

Purity
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain
Endotoxin Level
<1.0 EU per 1 μg of the protein by the LAL method.
Activity
Measured in a cell proliferation assay using TT human medullary thyroid cancer cells. The ED50 for this effect is 1-3 ng/mL.
Source
E. coli-derived mouse Persephin protein
Ala61-Gly156
Accession #
N-terminal Sequence
Analysis
Ala61
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
10.3 kDa (monomer)

Product Datasheets

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2479-PS (with carrier)

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2479-PS/CF (carrier free)

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

2479-PS

Formulation Lyophilized from a 0.2 μm filtered solution in HCl with Trehalose and with BSA as a carrier protein.
Reconstitution Reconstitute at 100 μg/mL in sterile 4 mM HCI containing at least 0.1% human or bovine serum albumin.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.

2479-PS/CF

Formulation Lyophilized from a 0.2 μm filtered solution in HCl with Trehalose.
Reconstitution Reconstitute at 100 μg/mL in sterile 4 mM HCl.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage: Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
  • 12 months from date of receipt, -20 to -70 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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Background: Persephin

Persephin is a secreted protein belonging to the glial cell line-derived neurotrophic factor (GDNF) family of the TGF-beta superfamily. It shares 38 - 46% amino acid identity with family members GDNF, neurturin and artemin. Persephin is expressed at very low levels in most tissues (1). The 10 - 12 kDa mature protein contains several cysteines that are conserved among family members. It circulates as an unglycosylated disulfide-linked homodimer. Mature mouse persephin shares 94%, 81%, 79% and 76% amino acid sequence identity with rat, human, bovine and canine persephin, respectively. Like other GDNF family members, persephin acts through engagement of a glycosylphosphatidylinositol (GPI)-linked GDNF receptor family (GRF) member that signals through the receptor tyrosine kinase RET. Persephin is reported to promote both the survival and growth of central dopaminergic and motor neurons, and kidney development (1). These effects are correlated with the expression patterns of its specific receptor, GFR alpha 4, and RET (2, 3). Functional GFR alpha 4 isoforms are found only in thyroid, adrenal medulla and portions of the central nervous system and include GPI-linked, transmembrane and soluble forms (3, 4). In vitro, persephin promotes survival only in neurons which coexpress GPI-linked GFR alpha 4 with RET (2, 5). This effect does not show a strong correlation to the recruitment of RET in lipid rafts seen with other GDNF family members (6). Disruption of the persephin gene results in mice that are morphologically normal but have more damage and less effective repair after a central nervous system insult simulating a stroke. Microinjection of persephin prior to treatment protects against damage in both wild-type and mutant mouse brains, but surprisingly, high doses of persephin are detrimental (7).

References
  1. Milbrandt, J. et al. (1998) Neuron 20:245.
  2. Lindahl, M. et al. (2001) J. Biol. Chem. 276:9344.
  3. Lindahl, M. et al. (2000) Mol. Cell. Neurosci. 15:522.
  4. Akerud, P. et al. (2002) Mol. Cell. Neurosci. 21:205.
  5. Enokido, Y. et al. (1998) Curr. Biol. 8:1019.
  6. Yang, J. et al. (2004) FEBS Lett. 569:267.
  7. Tomac, A. C. et al. (2002) Proc. Natl. Acad. Sci. USA 99:9521.
Entrez Gene IDs
5623 (Human); 19197 (Mouse)
Alternate Names
Persephin; PSP; PSPN

Citation for Recombinant Mouse Persephin Protein

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

1 Citation: Showing 1 - 1

  1. Novel combinatorial screening identifies neurotrophic factors for selective classes of motor neurons
    Authors: S Schaller, D Buttigieg, A Alory, A Jacquier, M Barad, M Merchant, D Gentien, P de la Gran, G Haase
    Proc. Natl. Acad. Sci. U.S.A, 2017-03-07;114(12):E2486-E2493.
    Species: Mouse
    Sample Types: Whole Cells
    Applications: Bioassay

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