Recombinant Cynomolgus/Rhesus Macaque BTLA Fc Protein, CF

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Recombinant Cynomolgus/Rhesus Macaque BTLA Fc Protein, CF Binding Activity
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Product Details

Recombinant Cynomolgus/Rhesus Macaque BTLA Fc Protein, CF Summary

>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Measured by its binding ability in a functional ELISA. When Recombinant Mouse HVEM/TNFRSF14 Fc Chimera (Catalog # 2516-HV) is immobilized at 0.5 µg/mL, Recombinant Cynomolgus Monkey BTLA Fc Chimera binds with an ED50 of 25-125 ng/mL.
Human embryonic kidney cell, HEK293-derived BTLA protein
Cynomolgus Monkey BTLA
Accession # XP_005548224
Accession #
N-terminal Sequence
Structure / Form
Disulfide-linked homodimer
Predicted Molecular Mass
40.3 kDa
48-58 kDa, reducing conditions

Product Datasheets

Carrier Free

What does CF mean?

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.

What formulation is right for me?

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 with Trehalose.
Reconstitution Reconstitute at 500 μg/mL in PBS.
Shipping The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage:
  • 12 months from date of receipt, ≤ -20 °C as supplied.
  • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
  • 3 months, ≤ -20 °C under sterile conditions after reconstitution.

Data Images

Binding Activity Binding Activity View Larger

When Recombinant Mouse HVEM/TNFRSF14 Fc Chimera (Catalog # 2516-HV) is immobilized at 0.5 µg/mL, Recombinant Cynomolgus Monkey BTLA FcChimera binds with an ED50 of 25-125 ng/mL.


2 μg/lane of Recombinant Cynomolgus Monkey BTLA was resolved with SDS-PAGE underreducing (R) and non-reducing (NR) conditions and visualized by Coomassie® Bluestaining, showing bands at 48-58 kDa and 100-115 kDa, respectively.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Background: BTLA

B- and T-lymphocyte attenuator (BTLA; CD272) is a 50-57 kDa type I transmembrane glycoprotein in the CD28 family of T cell co-stimulatory molecules (1-3). Mature cynomolgus BTLA contains a 127 amino acid (aa) extracellular domain (ECD), a 21 aa transmembrane sequence, and a 111 aa cytoplasmic domain. In humans, the cytoplasmic tail transmits inhibitory signaling via two ITIM motifs and three Tyr phosphorylation sites (4, 5). The ECD of cynomolgus BTLA shares 88% aa identity with that of human BTLA. A splice variant lacking the transmembrane domain has been reported in humans (6). Unlike other CD28 family members, the BTLA Ig domain in the ECD is of the I-type rather than V-type, and BTLA does not form homodimers (7). BTLA is also unusual in its interaction with the TNF superfamily member HVEM rather than with B7 family ligands (8). BTLA is expressed on T cells, B cells, macrophages, dendritic cells, and NK cells (9). Its expression is low in naïve T cells and increases during antigen-specific induction of anergy. In B cells, BTLA expression is highest in mature naïve cells (9). BTLA apparently limits T cell numbers, since its deletion results in overproduction of T cells, especially CD8+ memory T cells that are hyper-responsive to TCR cross-linking (10). Under the control of ROR gamma t and IL-7, BTLA regulates the homeostasis and inflammatory responses of gamma δT cells (11). The binding of BTLA and HVEM does not preclude the concurrent binding of other HVEM ligands such as LIGHT or Lymphotoxin-alpha (12).

  1. Murphy, K.M. et al. (2006) Nat. Rev. Immunol. 6:671.
  2. Croft, M. (2005) Trends. Immunol. 26:292.
  3. Watanabe, N. et al. (2003) Nat. Immunol. 4:670.
  4. Gavrieli, M. et al. (2003) Biochem. Biophys. Res. Commun. 312:1236.
  5. Chemnitz, J.M. et al. (2006) J. Immunol. 176:6603.
  6. Han, P. et al. (2004) J. Immunol. 172:5931
  7. Compaan, D.M. et al. (2005) J. Biol. Chem. 280:39553.
  8. Sedy, J. R. et al. (2005) Nat. Immunol. 6:90.
  9. Hurchla, M.A. et al. (2005) J. Immunol. 174:3377.
  10. Krieg, C. et al. (2007) Nat. Immunol. 8:162.
  11. Bekiaris, V. et al. (2013) Immunity 39:1082.
  12. Cai G and Freeman GJ, (2009) Immunol Rev. 229:244
Long Name
B- And T-Lymphocyte Attenuator
Entrez Gene IDs
151888 (Human); 208154 (Mouse); 102144877 (Cynomolgus Monkey)
Alternate Names
B and T lymphocyte associated; B and T lymphocyte attenuator; B- and T-lymphocyte attenuator; B- and T-lymphocyte-associated protein; BTLA; BTLA1; CD272 antigen; CD272; FLJ16065; MGC129743


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