Recombinant Human Persephin Protein

Name: Recombinant Human Persephin Protein
Brand: Beta LifeScience
SKU: BL-1901NP
Availability: InStock

BL-1901NP: Greater than 95% as determined by reducing SDS-PAGE. (QC verified)

Collections: Cytokines, Other recombinant proteins, Recombinant proteins

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Product Overview

Description	Recombinant Human Persephin is produced by our E.coli expression system and the target gene encoding Ala61-Gly156 is expressed.
Accession	O60542
Synonym	Persephin; PSP; PSPN
Gene Background	Persephin is a secreted protein, belongs to the glial cell linederived neurotrophic factor (GDNF) family of the TGF-β superfamily. It shares 38-46% amino acid (aa) identity with family members GDNF, neurturin and artemin. It is expressed at very low levels in most tissues. Mature protein contains a signal sequence, a pro-domain and a 96 aa mature sequence with several cysteines that are conserved among family members. It circulates as an unglycosylated disulfide-linked homodimer. Like other GDNF family members, Persephin acts through engagement of GRFα4, a glycosylphosphatidylinositol (GPI)-linked GDNF receptor family Persephin is reported to promote both the survival and growth of central dopaminergic and motor neurons, and kidney development. These effects are correlated with the expression patterns of GFRα4, and RET.
Molecular Mass	10.4 KDa
Apmol Mass	12 KDa, reducing conditions
Formulation	Lyophilized from a 0.2 μm filtered solution of 4mM HCl.
Endotoxin	Less than 0.1 ng/µg (1 EU/µg) as determined by LAL test.
Purity	Greater than 95% as determined by reducing SDS-PAGE. (QC verified)
Biological Activity	Not tested
Reconstitution	Always centrifuge tubes before opening.Do not mix by vortex or pipetting.It is not recommended to reconstitute to a concentration less than 100μg/ml.Dissolve the lyophilized protein in 4mM HCl.Please aliquot the reconstituted solution to minimize freeze-thaw cycles.
Storage	Lyophilized protein should be stored at ≤ -20°C, stable for one year after receipt.Reconstituted protein solution can be stored at 2-8°C for 2-7 days.Aliquots of reconstituted samples are stable at ≤ -20°C for 3 months.
Shipping	The product is shipped at ambient temperature.Upon receipt, store it immediately at the temperature listed below.
Usage	For Research Use Only

Target Details

Target Function	Exhibits neurotrophic activity on mesencephalic dopaminergic and motor neurons.
Subcellular Location	Secreted.
Protein Families	TGF-beta family, GDNF subfamily
Database References	HGNC: 9579 OMIM: 602921 KEGG: hsa:5623 STRING: 9606.ENSP00000245810 UniGene: Hs.248159

Gene Functions References

Results suggested that PSPN is a possible key regulator of oral squamous cell carcinoma (OSCC) progression via PSPN-RET-mitogen-activated protein kinase activation and that PSPN overexpression may have diagnostic potential for OSCC. PMID: 24375483
Results identify persephin, a GDNF family member, as a novel ligand for GFRalpha1/RET receptor complex. PMID: 20350599
Persephin/GFRalpha4 is unable to recruit RET protein into lipid rafts. PMID: 15225646
The results obtained suggest the involvement of NTN, PSP, and ART in processes subserving both the organization of this cortical region during development and the functional activity and maintenance of the mature human hippocampal neurons. PMID: 15829225
No differences were found in the allelic frequencies of the variants or in the haplotype distribution between Hirschsprung's disease patients & controls, nor to any demographic/clinical parameters within the group of patients. PMID: 18970938

FAQs

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Proteins are sensitive to heat, and freeze-drying can preserve the activity of the majority of proteins. It improves protein stability, extends storage time, and reduces shipping costs. However, freeze-drying can also lead to the loss of the active portion of the protein and cause aggregation and denaturation issues. Nonetheless, these adverse effects can be minimized by incorporating protective agents such as stabilizers, additives, and excipients, and by carefully controlling various lyophilization conditions.

Commonly used protectant include saccharides, polyols, polymers, surfactants, some proteins and amino acids etc. We usually add 8% (mass ratio by volume) of trehalose and mannitol as lyoprotectant. Trehalose can significantly prevent the alter of the protein secondary structure, the extension and aggregation of proteins during freeze-drying process; mannitol is also a universal applied protectant and fillers, which can reduce the aggregation of certain proteins after lyophilization.

Our protein products do not contain carrier protein or other additives (such as bovine serum albumin (BSA), human serum albumin (HSA) and sucrose, etc., and when lyophilized with the solution with the lowest salt content, they often cannot form A white grid structure, but a small amount of protein is deposited in the tube during the freeze-drying process, forming a thin or invisible transparent protein layer.

Reminder: Before opening the tube cap, we recommend that you quickly centrifuge for 20-30 seconds in a small centrifuge, so that the protein attached to the tube cap or the tube wall can be aggregated at the bottom of the tube. Our quality control procedures ensure that each tube contains the correct amount of protein, and although sometimes you can't see the protein powder, the amount of protein in the tube is still very precise.

To learn more about how to properly dissolve the lyophilized recombinant protein, please visit Lyophilization FAQs.