Part of the fibrinogen protein family, FGL1 is expressed at low levels in the liver under usual conditions. By contrast, this protein is highly expressed in various types of cancers such as melanoma and prostate cancer.
According to a recent study, FGL1 protein is a hot immune inhibitory ligand of LAG-3 products. Therefore, inhibiting the interaction between FGL1 and LAG-3 would not only improve the body’s immunity but would also slow down the growth of tumors.
ACROBiosystems has developed HEK293-expressed FGL1 protein with a wide range of tags (His, Fc) and species (Mouse, Human, Cyno). The company has also developed AviTagTM biotinylated FGL1 protein that can help in developing drugs. Moreover, ACROBiosystems has validated the activity and purity of FGL1 protein and also offers protocols.
Application

Product List
Molecule |
Cat. No. |
Host |
Product Description |
Product Status |
FGL1
(HEK293 expressed) |
FG1-H5253 |
Human |
Human FGL1 Protein, Fc Tag |
Launched |
FG1-H82F3 |
Human |
Biotinylated Human FGL1 Protein, Fc Tag, Avi Tag (Avitag™) |
FG1-M5255 |
Mouse |
Mouse FGL1 Protein, Fc Tag |
FG1-C5253 |
Cynomolgus / Rhesus macaque |
Cynomolgus / Rhesus macaque FGL1 Protein, Fc Tag |
FG1-H52H7 |
Human |
Human FGL1 Protein, His Tag |
Coming soon |
FG1-H82E5 |
Human |
Biotinylated Human FGL1 Protein, His Tag, Avi Tag (Avitag™) |
FG1-M5253 |
Mouse |
Mouse FGL1 Protein, Mouse IgG2a Fc Tag |
FG1-C5256 |
Cynomolgus / Rhesus macaque |
Cynomolgus / Rhesus macaque FGL1 Protein, Mouse IgG2a Fc Tag |
As cited above, FGL1 protein has been recognized as a hot immune inhibitory ligand of LAG-3 products.
Bioactivity
Bioactivity of FGL1 was Validated by ELISA

Immobilized Human LAG-3, mouse IgG2a Fc tag (Cat. No. LA3-H52Aa) at 10 μg/mL (100 μL/well) can bind Biotinylated Human FGL1, Fc Tag, Avi Tag (Cat. No. FG1-H82F3) with a linear range of 0.156–1.25 μg/mL.

Immobilized Human LAG-3, mouse IgG2a Fc tag (Cat. No. LA3-H52Aa) at 20 μg/mL (100 μL/well) can bind Human FGL1, Fc Tag (Cat. No. FG1-H5253) with a linear range of 5–78 ng/mL.

Immobilized Mouse LAG-3, His Tag (Cat. No. LA3-M52H5) at 20 μg/mL (100 μL/well) can bind Mouse FGL1, Fc Tag (Cat. No. FG1-M5255) with a linear range of 0.078–1.25 μg/mL.

Immobilized Human LAG-3, mouse IgG2a Fc tag (Cat. No. LA3-H52Aa) at 5 μg/mL (100 μL/well) can bind Cynomolgus / Rhesus macaque FGL1, Fc Tag (Cat. No. FG1-C5253) with a linear range of 8–125 ng/mL.
*Customers can contact ACROBiosystems if they wish to add further experimental design and application data of FGL1 protein. If they have any custom-made product or more suggestion for FGL1 protein, they can explore the development suggestion section.
About ACROBiosystems
ACROBiosystems is a leading manufacturer of recombinant proteins and other critical reagents to support the development of target therapeutics. The company employs an application oriented development strategy, with a particular focus on product design, quality control and solution based support. Our products and services enable anyone in the field of drug development to have a more intuitive and streamlined process.
To respond to coronavirus pandemic, ACROBiosystems has developed SARS-CoV-2 antigens specifically designed and optimized for serological test kits, including Spike-derived antigen S1, RBD and Nucleocapsid protein. Proteins have been supplied to diagnostic companies in large quantity.
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