Date published: 2025-11-1

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MYLK3 Inhibitors

Chemical inhibitors of MYLK3 exert their inhibitory effects through various mechanisms that target specific signaling pathways and kinases that are interconnected with the functional role of MYLK3. ML-7 and ML-9, for instance, inhibit the myosin light chain kinase (MLCK), resulting in a decrease in the phosphorylation of myosin light chains. As MYLK3 also phosphorylates these myosin light chains, the action of ML-7 and ML-9 indirectly reduces the availability of the substrate for MYLK3, thereby inhibiting its activity. Similarly, Staurosporine, a broad-spectrum protein kinase inhibitor, suppresses protein kinase C (PKC), which shares signaling pathways with MYLK3, especially in muscle contraction regulation. By inhibiting PKC, Staurosporine indirectly decreases MYLK3's capacity to phosphorylate its downstream targets. The chemical inhibitors like Wortmannin and LY294002 inhibit phosphoinositide 3-kinases (PI3K), disrupting the PI3K/AKT signaling that is crucial for many cellular processes, including those involving MYLK3. By obstructing this pathway, these inhibitors contribute to the functional inhibition of MYLK3. In a similar vein, H-89 and Gö 6976 target protein kinase A (PKA) and calcium/calmodulin-dependent protein kinases, respectively. The inhibition of these kinases by H-89 and Gö 6976 can reduce the phosphorylation of proteins within the same pathway as MYLK3, thus indirectly inhibiting its kinase activity. Y-27632 and KN-93, by inhibiting ROCK and CaMKII, respectively, affect the actin cytoskeleton dynamics and calcium signaling pathways, both of which are essential for the proper functioning of MYLK3. The inhibition of these kinases by Y-27632 and KN-93 leads to a reduction in the functional activity of MYLK3, as it is involved in related processes. Additionally, U0126, PD 98059, and SB 203580 specifically inhibit MEK1/2 and p38 MAP kinase, respectively, which are upstream of ERK signaling. Since MYLK3 is involved in the ERK pathway, the inhibition of these kinases can lead to a decrease in the kinase activity of MYLK3.

Items 1 to 10 of 12 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

ML-7 hydrochloride

110448-33-4sc-200557
sc-200557A
10 mg
50 mg
$89.00
$262.00
13
(1)

ML-7 is an inhibitor of myosin light chain kinase (MLCK), which is involved in the phosphorylation of myosin light chains. By inhibiting MLCK, it indirectly prevents MYLK3 from phosphorylating myosin light chains, leading to the inhibition of MYLK3's role in muscle contraction and cellular motility.

ML-9

105637-50-1sc-200519
sc-200519A
sc-200519B
sc-200519C
10 mg
50 mg
100 mg
250 mg
$110.00
$440.00
$660.00
$1200.00
2
(1)

ML-9, like ML-7, inhibits MLCK and thereby reduces the phosphorylation activity on myosin light chains. Since MYLK3 is a kinase that can phosphorylate myosin light chains, inhibition of MLCK by ML-9 will reduce the substrate availability for MYLK3, leading to its functional inhibition.

Wortmannin

19545-26-7sc-3505
sc-3505A
sc-3505B
1 mg
5 mg
20 mg
$66.00
$219.00
$417.00
97
(3)

Wortmannin is a potent inhibitor of phosphoinositide 3-kinases (PI3K). By inhibiting PI3K, it disrupts the PI3K/AKT pathway that is crucial for many cellular processes including actin cytoskeleton reorganization, where MYLK3 is involved. Inhibition of this pathway leads to the functional inhibition of MYLK3.

Staurosporine

62996-74-1sc-3510
sc-3510A
sc-3510B
100 µg
1 mg
5 mg
$82.00
$150.00
$388.00
113
(4)

Staurosporine is a broad-spectrum inhibitor of protein kinases. It inhibits protein kinase C (PKC) which is involved in the same signaling pathways as MYLK3, particularly in the regulation of muscle contraction. Inhibition of PKC can decrease the phosphorylation of downstream targets, indirectly inhibiting MYLK3.

H-89 dihydrochloride

130964-39-5sc-3537
sc-3537A
1 mg
10 mg
$92.00
$182.00
71
(2)

H-89 is an inhibitor of protein kinase A (PKA). By inhibiting PKA, it can reduce the phosphorylation of targets within the same pathway as MYLK3, leading to an indirect inhibition of MYLK3's kinase activity.

Y-27632, free base

146986-50-7sc-3536
sc-3536A
5 mg
50 mg
$182.00
$693.00
88
(1)

Y-27632 is an inhibitor of ROCK (Rho-associated protein kinase), which is involved in regulating actin cytoskeleton dynamics and contraction. As MYLK3 is also implicated in cytoskeletal dynamics through phosphorylation of myosin light chains, inhibition of ROCK can lead to a decrease in MYLK3's functional activity.

Gö 6976

136194-77-9sc-221684
500 µg
$223.00
8
(1)

Gö 6976 is an inhibitor of calcium/calmodulin-dependent protein kinases. Since MYLK3 is a kinase that can be regulated by calcium signaling, inhibition of these kinases can reduce the phosphorylation of target proteins, leading to the functional inhibition of MYLK3.

KN-93

139298-40-1sc-202199
1 mg
$178.00
25
(1)

KN-93 is a specific inhibitor of Ca2+/calmodulin-dependent protein kinase II (CaMKII). Inhibition of CaMKII can affect the calcium signaling pathways that are necessary for MYLK3 function, resulting in an indirect inhibition of MYLK3's activity.

PD 98059

167869-21-8sc-3532
sc-3532A
1 mg
5 mg
$39.00
$90.00
212
(2)

PD 98059 is an inhibitor of MEK, which is upstream of the ERK pathway. By inhibiting MEK, the activation of downstream kinases is prevented. As MYLK3 is involved in pathways regulated by ERK, its functional activity is inhibited by the reduction in ERK signaling.

SB 203580

152121-47-6sc-3533
sc-3533A
1 mg
5 mg
$88.00
$342.00
284
(5)

SB 203580 is a specific inhibitor of p38 MAP kinase. Inhibition of p38 MAPK can disrupt stress response and inflammatory signaling pathways where MYLK3 might be involved. This inhibition can decrease MYLK3's kinase activity.