Fagus Antibody Services

Recombinant Human CD28/TP44 Protein (mFc Tag)

£93.60£297.00 excluding VAT

T-cell-specific surface glycoprotein CD28(CD28) is a single-pass typeI membrane protein which contains one Ig-likeV-type (immunoglobulin-like)domain. It belongs to the immunoglobulin(Ig) superfamily. CD28 is one of the molecules expressed on T cells that provide co-stimulatory signals; which are required for T cell activation. CD28 co-stimulation is necessary for CD4 positive T-cell proliferation and survival; interleukin-2 production; and T-helper type-2 development. Human post-thymic regulatory T cells require CD28 co-stimulation to expand and maintain potent suppressive function in vivo. Apoptosis plays a key role in the age-related decline of CD28 expression and in immunosenescence. CD28 is the receptor for CD80(B7.1) and CD86(B7.2). When activated by Toll-like receptor ligands; the CD80 expression is upregulated in antigen presenting cells(APCs). The CD86 expression on antigen presenting cells is constitutive. CD28 is the only B7 receptor constitutively expressed on naive T cells.

Size

10µg, 50µg

Active Protein
Activity
Protein Construction

Recombinant Human CD28 is produced by our Mammalian expressionsystem and the target gene encoding Asn19-Pro152 is expressed with a mFc tag at the C-terminus.

Sequence

Asn19-Pro152

Fusion Tag

C-mFc

Accession

P10747

Species

Human

Expressed Host

Human Cells

Shipping

This product is provided as lyophilized powder which is shipped with ice packs.

Purity

> 95 % as determined by reducing SDS-PAGE.

Endotoxin

< 1.0 EU per μg as determined by the LAL method.

Stability and Storage

Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.

Mol Mass

41.7 kDa

AP Mol Mass

40-75 kDa

Formulation

Lyophilized from a 0.2 μm filtered solution of PBS, pH 7.4.

Research Areas

immunology, Stem cells

Reconstitution

Please refer to the printed manual for detailed information.

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