Date published: 2026-4-1

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MAP-1S Activators

MAP-1S Activators comprise a specialized class of chemical compounds that specifically enhance the functional activity of the microtubule-associated protein 1S, known as MAP-1S. These activators work by various biochemical mechanisms, each interacting with different aspects of the cellular machinery to augment the role of MAP-1S in microtubule stabilization and dynamics, which is crucial for maintaining cellular structure and facilitating intracellular transport. One common mechanism by which these activators function is through the modulation of the phosphorylation state of MAP-1S. Certain activators may promote the activity of kinases that phosphorylate MAP-1S, thereby increasing its association with microtubules and enhancing its stabilizing effect. Other activators might inhibit phosphatases responsible for dephosphorylating MAP-1S, leading to a sustained activation state of the protein. This modulation ensures that MAP-1S retains a structure that is conducive to its binding affinity with tubulin, thereby promoting microtubule assembly and stability.

In addition to phosphorylation, MAP-1S Activators can also influence the protein's activity through allosteric interactions that alter its conformation. These activators bind to specific regulatory sites on MAP-1S, inducing a conformational change that increases its affinity for microtubules or its ability to interact with other proteins associated with microtubule function. This can lead to enhanced scaffolding capabilities of MAP-1S, which is pivotal for the formation of complex cellular structures and the orchestration of signaling events that depend on the microtubule network. Moreover, some MAP-1S Activators may function by modulating the levels of GTP-bound tubulin, the building block of microtubules, thus indirectly contributing to the regulation of microtubule dynamics through MAP-1S. By maintaining a pool of GTP-tubulin, these activators facilitate the elongation of microtubules, a process that is intricately linked with MAP-1S activity. Collectively, MAP-1S Activators enhance the intrinsic activity of MAP-1S through direct and indirect means, impacting cellular shape, motility, and intracellular trafficking without altering gene expression or protein abundance.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

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, leading to increased cAMP levels. Elevated cAMP activates PKA, which can phosphorylate substrates involved in pathways that MAP-1S is part of, enhancing its activity.

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 involved in multiple signaling cascades. PKC activation enhances the phosphorylation of proteins in pathways where MAP-1S is active.

Ionomycin

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

Ionomycin is a calcium ionophore that increases intracellular calcium levels, potentially activating calcium-dependent kinases that can phosphorylate and enhance MAP-1S activity.

D-erythro-Sphingosine-1-phosphate

26993-30-6sc-201383
sc-201383D
sc-201383A
sc-201383B
sc-201383C
1 mg
2 mg
5 mg
10 mg
25 mg
$165.00
$322.00
$570.00
$907.00
$1727.00
7
(1)

This lipid signaling molecule interacts with its receptors to activate downstream kinases such as PKC, which can lead to the activation of MAP-1S through phosphorylation.

(−)-Epigallocatechin Gallate

989-51-5sc-200802
sc-200802A
sc-200802B
sc-200802C
sc-200802D
sc-200802E
10 mg
50 mg
100 mg
500 mg
1 g
10 g
$43.00
$73.00
$126.00
$243.00
$530.00
$1259.00
11
(1)

EGCG inhibits certain kinases, potentially reducing competitive signaling and freeing up pathways that enhance MAP-1S activity.

SB 203580

152121-47-6sc-3533
sc-3533A
1 mg
5 mg
$90.00
$349.00
284
(5)

SB203580 is a p38 MAPK inhibitor, which can alter the signaling equilibrium and potentially enhance the activity of MAP-1S by modulating associated stress response pathways.

A23187

52665-69-7sc-3591
sc-3591B
sc-3591A
sc-3591C
1 mg
5 mg
10 mg
25 mg
$55.00
$131.00
$203.00
$317.00
23
(1)

A23187 is a calcium ionophore that raises intracellular calcium levels, activating calcium-dependent proteins and potentially enhancing the activity of MAP-1S.

Zaprinast (M&B 22948)

37762-06-4sc-201206
sc-201206A
25 mg
100 mg
$105.00
$250.00
8
(2)

Zaprinast inhibits phosphodiesterases, leading to increased cAMP levels, which could activate PKA and indirectly enhance the functional activity of MAP-1S.

Gö 6983

133053-19-7sc-203432
sc-203432A
sc-203432B
1 mg
5 mg
10 mg
$105.00
$299.00
$474.00
15
(1)

Go 6983 is a PKC inhibitor that, paradoxically, may enhance MAP-1S activity by inhibiting PKC isoforms that otherwise negatively regulate MAP-1S activation pathways.

Anisomycin

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

Anisomycin is a protein synthesis inhibitor that activates stress-activated protein kinases (SAPKs), potentially enhancing MAP-1S activity as part of the cellular stress response.