Recombinant Human Persephin (PSPN) Protein

Name: Recombinant Human Persephin (PSPN) Protein
Brand: Beta LifeScience
SKU: BL-1623SG
Availability: InStock

Collections: Cytokines and growth factors, Growth factors and receptors, Recombinant proteins

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Product Overview

Tag	N/A
Host Species	Human
Accession	O60542
Background	Persephin is a disulfide-linked homodimeric neurotrophic factor belonging to the Transforming Growth Factor-beta (TGF-beta) superfamily and the GDNF sub-family. One cysteine residue, out of the seven conserved, is used for inter-chain disulfide bridging while the others form a cysteine knot ring formation. It signals through RET and one of the four GFR-alpha (alpha-1, alpha-2, alpha-3, alpha-4) receptors to promote the proper development and maintenance of the nervous system. Persephin promotes survival of dopaminergic neurons in the midbrain as well as some motor neurons, and promotes branching of ureteric buds.
Description	Recombinant Human Persephin (PSPN) was produced in E. coli. This protein is purified with our unique purification methods.
Source	E.coli
Molecular Weight	10.7 kDa
Purity	For specific purity information on a given lot, see related COA.
Endotoxin	< 1.0 EU per μg of the protein as determined by the LAL method
Formulation	Recombinant protein is supplied in 50mM Tris-HCl, pH 7.5, 50mM NaCl, 10mM Glutathione, 0.25mM DTT, 0.1mM EDTA, 0.1mM PMSF and 25% glycerol.
Stability	The recombinant protein is stable for up to 12 months at -70°C
Usage	For Research Use Only
Storage	Recombinant Human Persephin (PSPN) Protein should be stored should be stored at < -70°C. It is recommended that the protein be aliquoted for optimal storage. Avoid repeated freeze-thaw cycles.

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.