Date published: 2026-2-2

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TCR α Activators

TCR α Activators are chemical compounds designed to modulate the activity of T-cell receptor alpha chains (TCR α). T-cell receptors are crucial components of the immune system, found on the surface of T lymphocytes, a type of white blood cell. TCR α chains, along with TCR β chains, form heterodimeric receptors that are responsible for recognizing antigens presented by major histocompatibility complex (MHC) molecules. This recognition is a pivotal step in the activation of T cells, initiating immune responses against pathogens, infected cells, or abnormal cells within the body. TCR α Activators are synthesized with the aim of selectively interacting with TCR α, influencing its signaling and functions, although the specific mechanisms can vary among different compounds within this chemical class.

The activation or modulation of TCR α by these compounds can have profound effects on the function and behavior of T cells. Upon antigen recognition, TCRs trigger a cascade of intracellular signaling events that lead to T-cell activation, proliferation, and differentiation. TCR α Activators enhance or inhibit these interactions by promoting or blocking the binding of TCR α to specific antigens presented by MHC molecules. Consequently, these activators serve as valuable tools for scientists studying the immune system and T cell biology, allowing them to investigate the role of TCR α in antigen recognition and immune responses. However, it's important to note that the specific mechanisms and outcomes of TCR α activation may vary depending on the context and the particular compound used within this chemical class, as TCR signaling is a complex and tightly regulated process.

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Items 1 to 10 of 11 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

PMA

16561-29-8sc-3576
sc-3576A
sc-3576B
sc-3576C
sc-3576D
1 mg
5 mg
10 mg
25 mg
100 mg
$41.00
$132.00
$214.00
$500.00
$948.00
119
(6)

PMA activates Protein Kinase C (PKC), which is crucial in T cell activation, indirectly influencing TCR α signaling.

Ionomycin

56092-82-1sc-3592
sc-3592A
1 mg
5 mg
$78.00
$270.00
80
(4)

Ionomycin functions as a calcium ionophore, increasing intracellular calcium levels, thus mimicking TCR α-mediated signaling.

Concanavalin A

11028-71-0sc-203007
sc-203007A
sc-203007B
50 mg
250 mg
1 g
$119.00
$364.00
$947.00
17
(2)

Concanavalin A is a lectin that binds to glycoproteins on the T cell surface, leading to nonspecific T cell activation, including TCR α-related pathways.

Okadaic Acid

78111-17-8sc-3513
sc-3513A
sc-3513B
25 µg
100 µg
1 mg
$291.00
$530.00
$1800.00
78
(4)

This compound inhibits protein phosphatases PP1 and PP2A, affecting TCR α signaling by altering the phosphorylation status of key proteins.

Forskolin

66575-29-9sc-3562
sc-3562A
sc-3562B
sc-3562C
sc-3562D
5 mg
50 mg
1 g
2 g
5 g
$78.00
$153.00
$740.00
$1413.00
$2091.00
73
(3)

Forskolin activates adenylyl cyclase, increasing cAMP levels, which can indirectly modulate TCR α signaling.

Bisindolylmaleimide I (GF 109203X)

133052-90-1sc-24003A
sc-24003
1 mg
5 mg
$105.00
$242.00
36
(1)

A specific PKC inhibitor that, by modulating PKC activity, indirectly influences TCR α signaling.

Prostratin

60857-08-1sc-203422
sc-203422A
1 mg
5 mg
$141.00
$541.00
24
(2)

Activates PKC, similar to PMA, and thereby can modulate TCR α activity indirectly.

Thapsigargin

67526-95-8sc-24017
sc-24017A
1 mg
5 mg
$136.00
$446.00
114
(2)

A SERCA pump inhibitor, causing an increase in cytosolic calcium levels, thus indirectly influencing TCR α signaling.

Bryostatin 1

83314-01-6sc-201407
10 µg
$245.00
9
(1)

This compound modulates PKC activity, impacting TCR α signaling pathways indirectly.

Anisomycin

22862-76-6sc-3524
sc-3524A
5 mg
50 mg
$99.00
$259.00
36
(2)

Anisomycin is a protein synthesis inhibitor that can influence TCR α signaling indirectly through stress response pathways.