Recombinant Human Reg1B Protein, CF Summary
Product Specifications
Gln23-Asn166, 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.
2090-RG
Formulation | Lyophilized from a 0.2 μm filtered solution in PBS. |
Reconstitution | Reconstitute at 500 μg/mL in 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
Recombinant Human Reg1B (Catalog # 2090-RG) stimulates cell proliferation in RT4‑D6P2T rat schwannoma cells. The ED50 for this effect is 0.15-0.75 μg/mL.
1 μg/lane of Recombinant Human Reg1B (Catalog # 2090-RG) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by silver staining, showing bands at 17.2 and 16.7 kDa, respectively.
Reconstitution Calculator
Background: Reg1B
Reg1B also called Lithostatine-1-beta or Pancreatic stone protein 2 (PSP2) is a type I subclass member of the Reg gene family. The Reg multigene family consists of four subclasses, types I, II, III and IV based on the primary structures of the encoded proteins of the genes. Reg1B is also a member of the Reg family of secreted C-type lectin domain-containing pancreatic proteins (1, 2). The human Reg1B cDNA encodes 166 amino acids protein which contains a 22 aa signal peptide and the 144 aa secreted mature protein. Reg1B shares 86% animo acide sequence identity with Reg1A and like Reg1A is secreted by the exocrine pancreas and associated with islet cell regeneration and diabetogenesis. Reg family proteins were also shown to cause Schwann cell proliferation during regeneration of motor neurons (3).
- Liu, J.-L. et al. (2008) Endocrine Metab. Immune Disord. Drug Targets 8:1.
- Unno, M. et al. (1993) J. Biol. Chem. 268:15974.
- Livesey F.J. et al. (1990) Nature. 390:614.
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