Myosin

(-)-Blebbistatin ((S)-(-)-Blebbistatin) is an S enantiomer of blebbistatin. It is a potent and selective myosin II inhibitor with IC50 ranging from 0.5 to 5 μM.

Blebbistatin ((±)-Blebbistatin) is a non-muscle myosin II (NMII)-selective and non-muscle myosin heavy chain 9 (MYH9)-specific inhibitor that promotes directional migration of corneal endothelial cells (CECs) and accelerates wound healing, while preserving the integrity of cell junctions and barrier function.

JB062 is a chemical compound acting as a nonmuscle myosin inhibitor, exhibiting IC50 values of 1.6, 5.4, and >100 μM against skeletal muscle myosin, cardiac muscle myosin, and smooth muscle myosin II, respectively. It selectively exhibits cytotoxicity towards human cancer cells without affecting normal cells. The compound is applicable in research fields concerning muscle spasticity, chronic musculoskeletal pain, and hypertrophic cardiomyopathy.

ATM-3507 is a protomyosin inhibitor with anticancer activity that inhibits human melanoma and can be used to study ovarian cancer.

Phenamacril (JS39919) is acyanoacrylate fungicide, has powerful inhibition against Fusarium species, especially to Fusarium graminearum. Phenamacril is a specific Fusarium myosin I inhibitor.

ML-7 hydrochloride (ML-7 HCl) is a cell-permeable, reversible, effective, ATP-competitive, and specific inhibitor of myosin light chain kinase (Ki: 300 nM); also inhibits smooth-muscle myosin light chain kinase, PKA, and PKC.

Myosin V-IN-1 is a potent and selective inhibitor of Myosin V with a Ki value of 6 μM.Myosin V-IN-1 inhibits actin V and slows down actin-activated myosin V ATPase by selectively inhibiting the release of ADP from the actinoglobulin complex.

W-7 hydrochloride (W-7 HCl), a calmodulin antagonist, inhibits Ca2+-calmodulin-dependent myosin light chain kinase and phosphodiesterase, W-7 hydrochloride induces apoptosis and has antitumor activity.

Mavacamten (MYK-461) is an orally bioavailable inhibitor of cardiac myosin ATPase,( IC50s of 490, 711 nM for bovine cardiac and human cardiac, respectively)

Pentachloropseudilin (PClP) is a reversible variant 1 myosin inhibitor with antimicrobial activity that inhibits Myo1s and class 5 myosins.Pentachloropseudilin inhibits growth factor-beta (TGF-β), which blocks host cell invasion by Trypanosoma cruzi.

Danicamtiv (MYK-491) is an inotropic agent and it also is a selective allosteric activator of cardiac myosin. Danicamtiv increases cardiac systolic function and preserves mechanical efficiency.

Omecamtiv mecarbil (CK-1827452) has been used in trials studying the treatment and basic science of Heart Failure, Echocardiogram, Pharmacokinetics, Chronic Heart Failure, and History of Chronic Heart Failure, among others.

JB002, a myosin II inhibitor, exhibits potent activity with an IC50 of ≤10 μM. It holds potential for research applications in muscle spasticity, chronic musculoskeletal pain, and hypertrophic cardiomyopathy.

para-Nitroblebbistatin is a non-cytotoxic, non-fluorescent, photostable, and specific inhibitor of myosin II. para-Nitroblebbistatin can be used to study the specific roles of myosin II in physiology, development, and cell biology.

ML-9 suppresses MLCK, PKA, and PKC activity with Ki values of 4, 32, and 54 μM, respectively. ML-9 is a selective and effective inhibitor of Akt kinase, inhibits myosin light-chain kinase (MLCK), and stromal interaction molecule 1 (STIM1) activity. ML-9 causes autophagy by stimulating autophagosome formation and inhibiting their degradation.

JB061 is a nonmuscle myosin inhibitor, demonstrating selective inhibitory activity with IC50 values of 4.4 μM (Cardiac muscle myosin), 9.1 μM (Skeletal muscle myosin), and >100 μM (Smooth muscle myosin II). It exhibits limited efficacy in reducing ATPase activity, with an IC50 exceeding 200 μM. Furthermore, JB061 displays cytotoxic effects on COS-7 cells, evidenced by an IC50 value of 39 μM.

HA-100 is an inhibitor of protein kinase

MS-444 (BE-34776) is a smooth muscle myosin light chain kinase (MLCK) and HuR inhibitor with antitumor activity for triple-negative breast and colorectal cancer.

BTS (N-Tosylbenzylamine) is a potent inhibitor of Ca2+-stimulated myosin S1 ATPase (IC50 : 5 μM) .

Thymosin β4 (cattle) TFA is a high-affinity activator of MLCK that operates independently of Ca2+ [1].