Recombinant Bovine Pigment Epithelium-Derived Factor (SERPINF1) Protein (His&Myc)

Name: Recombinant Bovine Pigment Epithelium-Derived Factor (SERPINF1) Protein (His&Myc)
Brand: Beta LifeScience
SKU: BLC-07178P
Availability: InStock

Greater than 85% as determined by SDS-PAGE.

Collections: Cytokines, Cytokines and growth factors, Growth factors and receptors, Recombinant proteins, Recombinant proteins fall special offers - full-length proteins

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Product Overview

Description	Recombinant Bovine Pigment Epithelium-Derived Factor (SERPINF1) Protein (His&Myc) is produced by our E.coli expression system. This is a full length protein.
Purity	Greater than 85% as determined by SDS-PAGE.
Uniprotkb	Q95121
Target Symbol	SERPINF1
Species	Bos taurus (Bovine)
Expression System	E.coli
Tag	N-10His&C-Myc
Target Protein Sequence	NAGQEAGSLTPESTGAPVEEEDPFFKVPVNKLAAAVSNFGYDLYRVRSGESPTANVLLSPLSVATALSALSLGAEQRTESNIHRALYYDLISNPDIHGTYKDLLASVTAPQKNLKSASRIIFERKLRIKASFIPPLEKSYGTRPRILTGNSRVDLQEINNWVQAQMKGKVARSTREMPSEISIFLLGVAYFKGQWVTKFDSRKTSLEDFYLDEERTVKVPMMSDPQAVLRYGLDSDLNCKIAQLPLTGSTSIIFFLPQKVTQNLTLIEESLTSEFIHDIDRELKTVQAVLTIPKLKLSYEGELTKSVQELKLQSLFDAPDFSKITGKPIKLTQVEHRVGFEWNEDGAGTNSSPGVQPARLTFPLDYHLNQPFIFVLRDTDTGALLFIGKILDPRGT
Expression Range	21-416aa
Protein Length	Full Length of Mature Protein
Mol. Weight	51.5 kDa
Research Area	Cancer
Form	Liquid or Lyophilized powder
Buffer	Liquid form: default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. Lyophilized powder form: the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.
Reconstitution	Briefly centrifuged the vial prior to opening to bring the contents to the bottom. Reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL. It is recommended to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. The default final concentration of glycerol is 50%.
Storage	1. Store at -20°C/-80°C upon receipt, aliquoting is necessary for mutiple use. 2. Avoid repeated freeze-thaw cycles. 3. Store working aliquots at 4°C for up to one week. 4. In general, protein in liquid form is stable for up to 6 months at -20°C/-80°C. Protein in lyophilized powder form is stable for up to 12 months at -20°C/-80°C.
Notes	Repeated freezing and thawing is not recommended. Store working aliquots at 4°C for up to one week.

Target Details

Target Function	Neurotrophic protein; induces extensive neuronal differentiation in retinoblastoma cells. Potent inhibitor of angiogenesis. As it does not undergo the S (stressed) to R (relaxed) conformational transition characteristic of active serpins, it exhibits no serine protease inhibitory activity.
Subcellular Location	Secreted. Melanosome.
Protein Families	Serpin family
Database References	KEGG: bta:281386 STRING: 9913.ENSBTAP00000012804 UniGene: Bt.2638
Tissue Specificity	Retinal pigment epithelial cells. Located in the interphotoreceptor matrix (IPM) which is between the retinal pigment epithelium and the neural retina.

Gene Functions References

PEDF inhibits key steps in the angiogenic response of retinal capillary endothelial cells, including cell proliferation and vascular tubule formation. Gene expression of PEDF is negatively regulated by glucose, insulin (via mTOR) and VEGF. PMID: 20219495
Results suggest that leptin might elicit angiogenesis through vascular endothelial growth factor induction as well as pigment epithelium-derived factor suppression in pericytes. PMID: 12779248
PEDF promotes growth of pericytes through autocrine production of PDGFB. PMID: 15896354
PEDF and VEGFR-1 have roles in the negative regulation of angiogenesis PMID: 16339148

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.