Recombinant Rat Reg3B Protein, CF Summary
Product Specifications
Glu27-Gly175, with an N-terminal Met
Analysis
Product Datasheets
Carrier Free
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.
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.
8288-RG
| Formulation | Lyophilized from a 0.2 μm filtered solution in PBS. |
| Reconstitution | Reconstitute at 500 μg/mL in sterile PBS. |
| 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.
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Scientific Data
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1 μg/lane of Recombinant Rat Reg3B (Catalog # 8288-RG) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by silver staining, showing single bands at 15.6 kDa and 14.5 kDa, respectively.
Reconstitution Calculator
Background: Reg3B
Rat Reg3B (Islets of Langerhans regenerating protein 3), also known as Reg-III alpha, Lithostathine 3, pancreatitis associated protein 2 and Lithostatine 3 is a member of the Reg family of secreted C-type lectin domain-containing pancreatic proteins (1, 2). Reg3B has been categorized in the type 3 subclass of the Reg gene family (3). The rat Reg3B cDNA encodes 174 amino acids (aa) including the 25 aa signal sequence and the 149 aa secreted mature protein. Rat Reg3B shares approximately 83% aa sequence identity with mouse Reg3B and 55% with humans Reg3B (1, 2). Reg proteins are thought to be stress response proteins that stimulate proliferation, particularly in beta cells of pancreatic islets (1). Reg3B is expressed primarily by acinar cells in the normal exocrine pancreas, and is up-regulated in NOD (non-obese diabetic) islets, hyperplastic islets, regenerating islets or in response to pancreatic injury or pancreatitis (1-6). IFN-beta causes Reg3B up-regulation in early-onset diabetic NOD mice or in a NOD insulinoma cell line (5). Reg3B is also up-regulated in mice lacking the pancreas-expressed keratin K8, and is thought to be regulated by keratin filament organization (4). It is proposed to serve as an autoantigen in NOD mouse immune-mediated type I diabetes models (5).
- Liu, J.-L. et al. (2008) Endocrine Metab. Immune Disord. Drug Targets 8:1.
- Unno, M. et al. (1993) J. Biol. Chem. 268:15974.
- Tebar LA. et al. (2008) PNAS. 105:11400.
- Zhong, B. et al. (2007) Mol. Biol. Cell 18:4969.
- Gurr, W. et al. (2007) Diabetes 56:34.
- Lu, Y. et al. (2006) Am. J. Physiol. Endocrinol. Metab. 291:E50.
- Baeza, N. et al. (1997) FEBS Lett. 416:364.
- Planas, R. et al. (2006) Diabetologia 49:2379.
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