Recombinant Cynomolgus/Rhesus Hepassocin/FGL1 Fc Protein, CF Summary
|MD||Human IgG1 Fc|
|IEGR||Cynomolgus Monkey/Rhesus Macaque Hepassocin/FGL1|
Accession # XP_005562748.1
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.
|Formulation||Lyophilized from a 0.2 μm filtered solution in PBS, NaCl and Glycerol with Trehalose.|
|Reconstitution||Reconstitute at 250 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.
Measured by its binding ability in a functional ELISA. When Recombinant Human LAG-3 Fc Chimera Protein (2319-L3) is immobilized at 2.50 μg/mL, 100 μL/well, Recombinant Cynomolgus Monkey/Rhesus Macaque Hepassocin/FGL1 Fc Chimera Protein (Catalog # 11176-HE) binds with an ED50 of 0.500-4.00 µg/mL.
2 μg/lane of Recombinant Cynomolgus Monkey/Rhesus Macaque Hepassocin/FGL1 Fc Chimera Protein (Catalog # 11176-HE) was resolved with SDS-PAGE under reducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Blue staining, showing bands at 58-65 kDa and 120-130 kDa, respectively.
Hepassocin, also known as Hepatocyte-derived fibrinogen-related protein 1 (HFREP-1) and Fibrinogen-Like Protein 1 (FGL1) (1), is a liver-specific secreted protein belonging to the fibrinogen superfamily whose members share a fibrinogen domain at their C-termini (2). Human Hepassocin/FGL1 is a secreted homodimer consisting of 312 amino acids (aa) with a 22 aa signal sequence and a 290 aa mature protein (3). Cynomolgus monkey shares 100% and 96.5% amino acid identity with rhesus macaque and human Hepassocin/FGL1, respectively. Hepassocin/FGL1 binds LAG-3 through its fibrinogen-like domain independently of MHC class II (4). Hepassocin/FGL1 inhibits antigen-specific T cell activation, with its elevated presence in plasma of cancer patients indicating poor prognoses (4). Other than this role in cancer progression, Hepassocin/FGL1 also has restorative function for liver cells. It is upregulated during liver regeneration following partial hepatectomy (5), and stimulates proliferation of hepatocytes in vivo and improves prognoses with fulminant hepatic failure in rats (6). Its expression is regulated in Hep G2 cells by interleukin-6 (IL-6) and is found in the serum in both bound and unbound states as an acute phase reactant (7).
- Yamamoto, T. et al. (1993) Biochem. Biophys. Res. Commun. 2:681.
- Zhang, S.M. et al. (2008) Innate Immun. 14:175.
- Hara, H. et al. (2001) Biochim. Biophys. Acta. 1520:45.
- Wang, J. et al. (2019) Cell. 176:334.
- Yu, HT. et al. (2009) J. Biol. Chem. 284:13335.
- Li, C.Y. et al. (2010) Gut. 59:817.
- Liu, Z. and C. Ukomadu. (2008) Biochem. Briophys. Res. Commun. 365:729.
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