Rat B7-H2 / ICOSLG Protein, Fc Tag

About this product

Rat B7-H2, Fc Tag (B72-R5259) is expressed from human 293 cells (HEK293). It contains AA Glu 25 - Lys 261 (Accession # XP_006256322.1).

Specifications

Catalog number

B72-R5259-1mg

Size / count

1 mg

Dry ice

No

Hazardous

No

Discontinued

Yes

Background

ICOS ligand (ICOSLG) is also known as B7 homolog 2 (B7-H2), B7-related protein 1 (B7RP-1) and CD antigen CD275, which belongs to the immunoglobulin superfamily and BTN/MOG family. ICOSLG contains one Ig-like C2-type (immunoglobulin-like) domain and one Ig-like V-type (immunoglobulin-like) domain. Isoform 1 is widely expressed, while isoform 2 is detected only in lymph nodes, leukocytes and spleen. B7-H2 is ligand for the T-cell-specific cell surface receptor ICOS. B7-H2 acts as a costimulatory signal for T-cell proliferation and cytokine secretion and induces also B-cell proliferation and differentiation into plasma cells. B7-H2 could play an important role in mediating local tissue responses to inflammatory conditions, as well as in modulating the secondary immune response by co-stimulating memory T-cell function.

Specifications

This protein carries a human IgG1 Fc tag at the C-terminus. The protein has a calculated MW of 53.4 kDa. The protein migrates as 70-100 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.

Expression Region

Glu 25 - Lys 261

Host

HEK 293

Target

B7-H2

Conjugation

Unconjugated

Tag

C-Fc

Source

Rat

Stability

-20°C to -70°C for 12 months in lyophilized state; -70°C for 3 months under sterile conditions after reconstitution._x000D_For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Endotoxin

1.0 EU per μg

Purity

90%

Bioactivity

Immobilized Mouse ICOS (C137S, C138S), His Tag (Cat. No. ICS-M52H8) at 5 μg/mL (100 μL/well) can bind Rat B7-H2, Fc Tag (Cat. No. B72-R5259) with a linear range of 0.6-39 ng/mL (QC tested).

Format

Powder

Buffer

50 mM Tris, 100 mM Glycine, 25 mM Arginine, 150 mM NaCl, pH7.5

Additives

Trehalose

Molecular Weight

53.4 kDa

Shipping Conditions

Room Temperature

Storage Conditions

-20°C