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(-)-Blebbistatin Myosin II ATPase inhibitor

Name: (-)-Blebbistatin
Brand: Selleck Chemicals
SKU: S7099
Availability: InStock
Rating: 5 (64 reviews)

Cat.No.S7099

(-)-Blebbistatin ((S)-(-)-Blebbistatin) is a cell-permeable inhibitor for non muscle myosin II ATPase with IC50 of ~2 μM in cell-free assays, does not inhibit myosin light chain kinase, inhibits contraction of the cleavage furrow without disrupting mitosis or contractile ring assembly.

Chemical Structure

Molecular Weight: 292.33

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Quality Control

Batch: Purity: 99.82%

99.82

Related Targets	CFTR CRM1 CD markers AChR Calcium Channel Sodium Channel Potassium Channel GABA Receptor TRP Channel GluR
Other ATPase Inhibitors	Thapsigargin Brefeldin A (BFA chemical) CB-5083 Sodium orthovanadate Golgicide A BTB06584 Ginsenoside Rb1 CDN1163 Periplocin Rhodamine 123

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Activity Description	PMID
Rh41	qHTS assay	qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Confirmatory screen for Rh41 cells	29435139
SK-N-MC	qHTS assay	qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells	29435139
NB-EBc1	qHTS assay	qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for NB-EBc1 cells	29435139
Click to View More Cell Line Experimental Data

Solubility

In vitro
Batch:

DMSO : 39 mg/mL (133.41 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg

Average weight of animals: g

Dosing volume per animal: μL

Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO

% Tween 80

% ddH₂O

% DMSO

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Chemical Information, Storage & Stability

Molecular Weight	292.33	Formula	C₁₈H₁₆N₂O₂	Storage (From the date of receipt)	3 years -20°C(in the dark) powder
CAS No.	856925-71-8	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	(S)-(-)-Blebbistatin			Smiles	CC1=CC2=C(C=C1)N=C3C(C2=O)(CCN3C4=CC=CC=C4)O

Mechanism of Action

Targets/IC₅₀/Ki	non-muscle myosin II ATPases (Cell-free assay) 0.5 μM-5 μM
In vitro	(-)-Blebbistatin, inhibits cytokinesis, alters the smooth movement of fish keratocytes and inhibits the spontaneous blebbing of a cell line lacking filamin. This compound is shown to inhibit the enzymatic activities of HMM fragments of nonmuscle myosin IIA, nonmuscle myosin IIB and of rabbit skeletal muscle myosin S1, but not smooth muscle myosin This chemical rapidly and reversibly inhibits Mg-ATPase activity and in vitro motility of non-muscle myosin IIA and IIB for several species, while poorly inhibiting smooth muscle myosin (IC50 = 80 μM). It potently inhibits Dictyostelium myosin II, but poorly inhibits Acanthamoeba myosin II. This compound does not inhibit representative myosin superfamily members from classes I, V, and X. It does not compete with nucleotide binding to the skeletal muscle myosin subfragment-1. The inhibitor preferentially binds to the ATPase intermediate with ADP and phosphate bound at the active site, and it slows down phosphate release. This chemical interferes neither with binding of myosin to actin nor with ATP-induced actomyosin dissociation. Instead, it blocks the myosin heads in a products complex with low actin affinity.
Kinase Assay	Actin-activated MgATPase assay
Kinase Assay	Actin-activated MgATPase activity is measured using an NADH-coupled assay in a Beckman DU 640 spectrophotometer. (-)-Blebbistatin [a racemic mixture of the (+) and (-) enantiomers] is added from stocks dissolved in DMSO and the DMSO concentration is maintained at a constant concentration of 5% in all samples.
In vivo	(-)-Blebbistatin ((S)-(-)-Blebbistatin) is a cell-permeable inhibitor for non muscle myosin II ATPase.
References	[1] https://pubmed.ncbi.nlm.nih.gov/12637748/ [2] https://pubmed.ncbi.nlm.nih.gov/15548862/ [3] https://pubmed.ncbi.nlm.nih.gov/15205456/ [4] https://pubmed.ncbi.nlm.nih.gov/34493720/ [5] https://pubmed.ncbi.nlm.nih.gov/34900532/

Applications

Methods	Biomarkers	PMID
Western blot	talin 1 / vinculin / paxillin paxillin / pY31 paxillin / pY397FAK / FAK PY epitopes / vinculin / paxillin	20308429
Growth inhibition assay	Cell viability Cell death	26733241
Glycerol/urea gel electrophoresis	RLC phosphorylation RLC phosphorylation RLC phosphorylation	18701651
DIC image	Traction force of a palladin KD (Palld4) cell	27353427
Immunofluorescence	GCs morphology actin / NMIIA / tubulin VE-cadherin / F-actin PY epitopes / actin PY epitopes / paxillin talin 1 / FAK / β1 integrin / zyxin / vinculin / α-actinin / paxillin	25598228