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Myosin

Myosin

Myosins are mechanoenzymes that interact with actin filaments and hydrolyse ATP to generate movement and force.This enables myosins to generate tension on actin filaments, which in turn allows them to walk along these filaments and propel the sliding of actin filaments. Myosins are able to control the cytoskeleton's dynamics and structure, which has an impact on how cells are transported and localized. According to their respective motor domains, the various myosins are divided into classes. Humans have 40 myosin genes, which are divided into 13 classes (I, II, III, V, VI, VII, IX, X, XV, XVI, XVIII, XIX, and XXXV) and represent the 35 known classes of myosin.

Muscle contraction, intracellular trafficking, cell division, motility, actin cytoskeletal organization, and cell signaling are just a few of the critical processes that myosins participate in. Deafness, hypertrophic cardiomyopathy, Usher syndrome, Griscelli syndrome, and cancer have all been linked to myosin dysfunction.

In order to perform its role in cytoskeleton contraction and tight junction regulation, the myosin light chain needs to be activated by the enzyme myosin light chain kinase (MLCK). In the majority of cells, MLCK functions as a signal transducer for MLC phosphorylation in response to Ca2+ binding to calmodulin associated with MLCK. Muscle contraction, cell migration, and endo/exocytic processes all benefit from MLCK-mediated MLC phosphorylation and actomyosin contractility, which is also known for playing a crucial part in signaling endothelial cell-cell adhesion and barrier function.

Myosin related products

Structure Cat No. Product Name CAS No. Product Description
(R)-MPH-220 V88828 (R)-MPH-220 (R)-MPH-220 is the R-form of MPH-220.
16-38-Thymosin β4 (cattle) V75828 16-38-Thymosin β4 (cattle) 113318-05-1 16-38-Thymosin β4 (cattle) is a high-affinity Ca2+-independent MLCK activator.
16-38-Thymosin β4 (cattle) (TFA) V77332 16-38-Thymosin β4 (cattle) (TFA) 16-38-Thymosin β4 (cattle) TFA is a high-affinity Ca2+-independent MLCK activator.
ATM-3507 trihydrochloride V56060 ATM-3507 trihydrochloride 2438679-30-0 ATM-3507 tri HCl is a potent inhibitor of tropomyosin, with IC50 of approximately 3.83-6.84 μM in human melanoma cell lines.
Blebbistatin V34749 Blebbistatin 674289-55-5 Blebbistatin is a selective non-muscle myosin II (NMII) inhibitor that promotes directional migration of corneal endothelial cells and accelerates wound healing with better preservation of cell junction integrity and barrier function.
BTS V17176 BTS 1576-37-0 BTS is a novel and potent inhibitor of ATPase activity of skeletal muscle myosin II subfragment 1 (S1),specifically theCa2+-stimulated myosin S1 ATPase (IC50 = 5 μM).
JB002 V51925 JB002 30408-07-2 JB002 is a myosin II inhibitor (antagonist) with IC50 ≤10 μM.
JB061 V76866 JB061 JB061 is a non-muscle myosin inhibitor (antagonist) with IC50s of 4.4 μM (cardiac myosin), 9.1 μM (skeletal muscle myosin), and >100 μM (smooth muscle myosin II).
JB062 V51924 JB062 2417988-00-0 JB062 is a nonmuscle myosin inhibitor (antagonist) with IC50s of 1.6, 5.4 and >100 μM for skeletal muscle myosin, cardiac myosin and smooth muscle myosin II, respectively.
ML-7 hydrochloride hydrate V33894 ML-7 hydrochloride hydrate 110448-33-4 ML-7 (ML7)hydrochloride hydrateis a naphthalene sulphonamide-based MLCK/Myosin light chain kinase inhibitor with anticancer activity.
MPH-220 V41175 MPH-220 2649776-79-2 MPH-220 is a selective, orally bioactive skeletal muscle myosin-2 inhibitor.
MT-134 V56061 MT-134 2968308-52-1 MT-134 is a SkMII-specific inhibitor (antagonist) with good exposure in muscle.
Myosin Light Chain Kinase Substrate (smooth muscle) V75829 Myosin Light Chain Kinase Substrate (smooth muscle) 119386-41-3 Myosin Light Chain Kinase Substrate (smooth muscle) is a synthetic peptide substrate for smooth muscle myosin light chain kinase (MLCK).
Myosin modulator 1 V88829 Myosin modulator 1 3034189-56-2 Myosin modulator 1 (Compound B141) is a myosin modulator that inhibits ATPase activity in rabbit psoas, porcine atrium, and porcine ventricle with IC25 values of 0.42, 0.13, and 3.09 μM, respectively.
Myosin modulator 2 V88830 Myosin modulator 2 3034189-87-9 Myosin modulator 2 (Compound B172) is a myosin modulator that inhibits ATPase in rabbit psoas, porcine atrium, and porcine ventricle with IC25 of 2.013, 2.94, and 20.93 μM, respectively.
Myosin V-IN-1 V35021 Myosin V-IN-1 1259177-59-7 Myosin V-IN-1 (compound 8) is a potent and specific Myosin V inhibitor (antagonist) with Ki of 6 μM.
Myosin-IN-1 V84255 Myosin-IN-1 849011-39-8
Omecamtiv mecarbil (CK1827452) V0063 Omecamtiv mecarbil (CK1827452) 873697-71-3 Omecamtiv mecarbil (also known as CK-1827452) is a specific/selective cardiac myosin activator and a clinical drug for left ventricular systolic heart failure.
Omecamtiv mecarbil-d8 (CK-1827452-d8) V79889 Omecamtiv mecarbil-d8 (CK-1827452-d8) Omecamtiv mecarbil-d8 is the deuterium labelled form of Omecamtiv mecarbil.
Para-aminoblebbistatin V56062 Para-aminoblebbistatin 2097734-03-5 Para-aminoblebbistatin is a water-soluble, non-fluorescent and photostable C15 amino-substituted blebbistatin analogue; inhibits various myosin II (myosin II) isoforms in vitro and in vivo.
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