Recombinant Human CD94 Protein, CF

Catalog #: 9270-CD Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
9270-CD-050

Recombinant Human CD94 Protein Bioactivity

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Summary Product Datasheets Carrier Free Data Images Reconstitution Calculator Background Related Research Areas

Recombinant Human CD94 Protein, CF Summary

Product Specifications

Purity

>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.

Activity

Measured by its binding ability in a functional ELISA. When Recombinant Mouse NKG2A/CD159a Fc Chimera (Catalog # 9198-NK) is coated at 0.5 µg/mL, 100 μL/well, recombinant human CD94 binds with a typical ED₅₀ of 0.1-0.6 μg/mL

Source

Chinese Hamster Ovary cell line, CHO-derived human CD94 protein
Lys32-Ile179, with an N-terminal 6-His tag

Accession #

Q13241

N-terminal Sequence
Analysis

Lys32

Predicted Molecular Mass

18 kDa

SDS-PAGE

21-38 kDa, reducing conditions

Product Datasheets

9270-CD

Product Datasheet

COA

SDS

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.

9270-CD

Formulation	Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose.
Reconstitution	Reconstitute at 200 μg/mL in PBS.
Shipping	The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage:	Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 12 months from date of receipt, -20 to -70 °C as supplied. 1 month, 2 to 8 °C under sterile conditions after reconstitution. 3 months, -20 to -70 °C under sterile conditions after reconstitution.

Scientific Data

Bioactivity

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When Recombinant Mouse NKG2A Fc Chimera (Catalog # 9198-NK) is coated at 0.5 µg/mL, Recombinant Human CD94 (Catalog # 9270-CD) binds with an ED₅₀ of 0.1-0.6 µg/mL.

Reconstitution Calculator

Background: CD94

CD94 is an approximately 25 kDa type 2 transmembrane protein that plays an important role in regulating natural killer (NK) cell activation (1). Human CD94 consists of a 10 amino acid (aa) cytoplasmic domain, a 21 aa transmembrane segment, and a 148 aa extracellular domain (ECD) with a stem region and one C-type lectin domain (2). Alternative splicing generates additional isoforms that lack either the stem region, the terminal half of the ECD, or the cytoplasmic and transmembrane regions (3). CD94 is expressed at varying cell surface density on NK cells during their differentiation and on a subset of CD8⁺ T cells (4). It associates into
disulfide-linked heterodimers with NKG2A/B, C, or E (5-8), and these complexes function as receptors for the nonclassical MHC class I molecule, HLA-E (9, 10). Ligation of CD94-NKG2A or CD94-NKG2C on NK cells triggers inhibitory or activating signals, respectively (11).

References

Chester, C. et al. (2015) Front. Immunol. 6:601.
Chang, C. et al. (1995) Eur. J. Immunol. 25:2433.
Lieto, L.D. et al. (2006) Genes Immun. 7:36.
Yu, J. et al. (2010) Blood 115:274.
Phillips, J.H. et al. (1996) Immunity 5:163.
Lazetic, S. et al. (1996) J. Immunol. 157:4741.
Brooks, A.G. et al. (1997) J. Exp. Med. 185:795.
Carretero, M. et al. (1997) Eur. J. Immunol. 27:563.
Braud, V.M. et al. (1998) Nature 391:795.
Kraemer, T. et al. (2014) J. Immunol. Res. 2014:352160.
Houchins, J.P. et al. (1997) J. Immunol. 158:3603.

Entrez Gene IDs

3824 (Human); 16643 (Mouse); 102119829 (Cynomolgus Monkey)

Alternate Names

CD94 antigen; CD94; CD94natural killer cells antigen CD94; Killer cell lectin-like receptor subfamily D member 1; killer cell lectin-like receptor subfamily D, member 1; KLRD1; KP43; NK cell receptor