Leukocyte-associated immunoglobulin-like receptor 2 ( LAIR2 ), also known as CD306, is a 131 amino acid protein containing one lg-like C2-type domain. It is expressed as a soluble receptor exhibiting high affinity for various collagen molecules to which it binds in a hydroxyproline-dependent manner. LAIR2 is a member of the immunoglobulin superfamily and was identified by its similarity to LAIR1, an inhibitory receptor present on mononuclear leukocytes. LAIR2 is thought to be secreted and may help modulate mucosal tolerance. As a natural competitor for LAIR1, soluble LAIR2 prevents binding of human LAIR1 to collagens and LAIR1 cross-linking, thereby regulating its inhibitory potential. Accordingly, LAIR2 is suggested to perform an immunoregulatory function.
Measured by the ability of the immobilized protein to support the adhesion of HT-29 human colon adenocarcinoma cells. When 1 x 10E4 cells/well are added to Recombinant Human LAIR2 coated plates (50 µg/ml with 100 ?l/well), approximately >40% cells will adhere after 10 minutes at 37?. Optimal concentration depends on cell type as well as the application or research objectives.
Endotoxin:
<1.0 EU per µg as determined by the LAL method.
Protein Construction:
A DNA sequence encoding the human LAIR2 (NP_002279.2) (Met 1-Pro 152) with a C-terminal polyhistidine tag was expressed.
Purity:
> 97 % as determined by reducing SDS-PAGE.
Mol Mass:
15.5 kDa
AP Mol Mass:
20 kDa
Formulation:
Lyophilized from sterile PBS, pH 7.4
Shipping:
This product is provided as lyophilized powder which is shipped with ice packs.
Stability and Storage:
Lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.
