Date published: 2026-4-1

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TSPAN19 Activators

Chemical activators of TSPAN19 can engage various signaling pathways to modulate its activity. Phorbol 12-myristate 13-acetate (PMA) is one such activator that directly targets protein kinase C (PKC). Upon activation, PKC phosphorylates a range of substrates, including TSPAN19, which leads to its activation. This phosphorylation event is a pivotal step in the signal transduction pathways that ultimately activate TSPAN19. Another activator, ionomycin, works through increasing intracellular calcium levels, which in turn activates calcium-sensitive signaling pathways. These pathways often involve calmodulin-dependent protein kinases, which can then activate TSPAN19. Similarly, thapsigargin disrupts calcium homeostasis by inhibiting the sarcoplasmic/endoplasmic reticulum Ca2+ ATPase (SERCA), leading to a cascade of signaling events that can also activate TSPAN19 through calcium-dependent mechanisms.

Forskolin and 8-Bromo-cyclic AMP both raise the levels of cAMP within the cell, which activates protein kinase A (PKA). PKA then phosphorylates various proteins, which can include TSPAN19, leading to its activation. Epidermal Growth Factor (EGF) stimulates its receptor, initiating a MAPK/ERK signaling cascade that can result in the activation of TSPAN19. Insulin, through its receptor, activates the PI3K/Akt pathway, which involves multiple phosphorylation events, including those that can activate TSPAN19. Okadaic Acid and Calyculin A, as inhibitors of protein phosphatases, prevent the dephosphorylation of proteins, which can result in the sustained activity of TSPAN19. Finally, 1,2-Dioctanoyl-sn-glycerol (DiC8), a synthetic analog of diacylglycerol (DAG), activates PKC, further contributing to the phosphorylation and subsequent activation of TSPAN19. Each of these chemicals, through their unique mechanisms, can initiate signaling pathways that converge on the activation of TSPAN19, highlighting the complex regulation of this protein by multiple upstream signals.

SEE ALSO...

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 known to phosphorylate substrates that could include TSPAN19, leading to its functional activation. PKC activation is a direct signaling event that can result in the activation of associated proteins within the same pathway, including TSPAN19.

Ionomycin

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

Ionomycin increases intracellular calcium concentration, which can activate calcium-sensitive signaling pathways that involve calmodulin-dependent protein kinases potentially leading to the activation of TSPAN19.

8-Bromo-cAMP

76939-46-3sc-201564
sc-201564A
10 mg
50 mg
$126.00
$328.00
30
(1)

8-Bromo-cyclic AMP is a cAMP analog that activates PKA, which may phosphorylate and activate signaling pathways involving TSPAN19.

Thapsigargin

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

Thapsigargin inhibits the sarcoplasmic/endoplasmic reticulum Ca2+ ATPase (SERCA), leading to increased intracellular calcium levels. This rise in calcium can activate signaling pathways that include calmodulin-dependent kinases, which in turn could lead to the activation of TSPAN19.

Bisindolylmaleimide I (GF 109203X)

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

Bisindolylmaleimide I is a PKC inhibitor, but it can indirectly cause the activation of compensatory pathways within the cell that may lead to the activation of TSPAN19.

Staurosporine

62996-74-1sc-3510
sc-3510A
sc-3510B
100 µg
1 mg
5 mg
$82.00
$153.00
$396.00
113
(4)

Staurosporine is a broad-spectrum kinase inhibitor, but at low concentrations, it can paradoxically activate certain kinases before inhibiting them, potentially leading to the activation of TSPAN19 through complex kinase-dependent signaling pathways.

Insulin

11061-68-0sc-29062
sc-29062A
sc-29062B
100 mg
1 g
10 g
$156.00
$1248.00
$12508.00
82
(1)

Insulin binds to its receptor, leading to the activation of the PI3K/Akt pathway. This pathway includes multiple phosphorylation events that can converge on the activation of TSPAN19.

Okadaic Acid

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

Okadaic Acid is an inhibitor of protein phosphatases 1 and 2A, which prevents dephosphorylation of proteins, potentially maintaining TSPAN19 in an activated state.

Calyculin A

101932-71-2sc-24000
sc-24000A
10 µg
100 µg
$163.00
$800.00
59
(3)

Similar to Okadaic Acid, Calyculin A inhibits protein phosphatases and could thus keep proteins in the TSPAN19 pathway phosphorylated, leading to its activation.

1,2-Dioctanoyl-sn-glycerol

60514-48-9sc-202397
sc-202397A
10 mg
50 mg
$47.00
$254.00
2
(1)

DiC8 is a synthetic analog of diacylglycerol (DAG) and can activate PKC, which is involved in the phosphorylation of proteins that could include TSPAN19, thereby potentially leading to its activation.