HHLA2 Protein (AA 23-344) (Fc Tag,AVI tag,Biotin)

Catalog No. ABIN5955002

Recombinant HHLA2 protein expressed in HEK-293 Cells.

Quick Overview for HHLA2 Protein (AA 23-344) (Fc Tag,AVI tag,Biotin) (ABIN5955002)

Target: HHLA2 (HERV-H LTR-Associating 2 (HHLA2))

Protein Type: Recombinant

Biological Activity: Active

Origin: Human

Source: HEK-293 Cells

Purity: >90 % as determined by SDS-PAGE.

Product Details

Protein Characteristics: AA 23-344

Purification tag / Conjugate: This HHLA2 protein is labelled with Fc Tag,AVI tag,Biotin.

Sequence: AA 23-344

Specificity: Biotinylation of this product is performed using Avitag™ technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.

Endotoxin Level: Less than 1.0 EU per μg by the LAL method.

Application Details

Comment:

Ready-to-use AvitagTM biotinylated protein:
The product is exclusively produced using the AvitagTM technology. Briefly, a unique 15 amino acid peptide, the Avi tag, is introduced into the recombinant protein during expression vector construction. The single lysine residue in the Avi tag is enzymatically biotinylated by the E. Coli biotin ligase BirA.

This single-point enzymatic labeling technique brings many advantages for commonly used binding assays. The biotinylation happens on the lysine residue of Avi tag, and therefore does NOT interfere with the target protein's natural binding activities. In addition, when immobilized on an avidin-coated surface, the protein orientation is uniform because the position of the Avi tag in the protein is precisely controlled.

Restrictions: For Research Use only

Handling

Format: Lyophilized

Buffer: Tris with Glycine, Arginine and NaCl,  pH 7.5

Handling Advice: Please avoid repeated freeze-thaw cycles.

Storage: -20 °C

Target Details

Target: HHLA2 (HERV-H LTR-Associating 2 (HHLA2))

Alternative Name: B7-H7

Background: B7-H7 (HHLA2) is a newly identified B7 family member that regulates human T-cell functions. B7-H7 was previously known as human endogenous retrovirus-H long terminal repeat associating 2 (HHLA2) with unidentified function. Recently, B7-H7 has been identified as a specific ligand for human CD28H. The B7-H7-CD28H pathway strongly promoted CD4+ T-cell proliferation and cytokine production via an AKT-dependent signaling cascade in the presence of TCR signaling, suggesting B7-H7 comprises a new co-stimulatory pathway. The first IgV domain of B7-H7, which presumably binds to a putative receptor, shows the highest homology to other B7 family members.

Molecular Weight: 65.9 kDa

NCBI Accession: NP_009003