5.30657

Myosin ATPase Activator, EMD57003

• Synonyme(s) : Myosin ATPase Activator, EMD57003, (+)-5-(1-(3,4-Dimethoxybenzoyl)-1,2,3,4-tetrahydroquinolin-6-yl)-6-methyl-3,6-dihydro-2H-1,3,4-thiadiazin-2-one, (+)-6-(3,6-Dihydro-6-methyl-2-oxo-2H-1,3,4-thiadiazin-5-yl)-1-(3,4-dimethoxybenzoyl)-1,2,3,4-tetrahydroquinoline, EMD-57033, Myosin Motor Act, (+)-5-(1-(3,4-Dimethoxybenzoyl)-1,2,3,4-tetrahydroquinolin-6-yl)-6-methyl-3,6-dihydro-2H-1,3,4-thiadiazin-2-one, (+)-6-(3,6-Dihydro-6-methyl-2-oxo-2H-1,3,4-thiadiazin-5-yl)-1-(3,4-dimethoxybenzoyl)-1,2,3,4-tetrahydroquinoline, EMD-57033, Myosin Motor Acti
• Formule empirique (notation de Hill) : C₂₂H₂₃N₃O₄S
• Numéro CAS: 147527-31-9
• Poids moléculaire : 425.50
• Code UNSPSC : 12352200

Propriétés

• Essai: ≥97% (HPLC)
• Niveau de qualité: 100
• Forme: solid
• Fabricant/nom de marque: Calbiochem^®
• Conditions de stockage: OK to freeze; protect from light
• Couleur: off-white
• Solubilité: DMSO: 50 mg/mL
• Température de stockage: −20°C
• InChI: 1S/C22H23N3O4S/c1-13-20(23-24-22(27)30-13)15-6-8-17-14(11-15)5-4-10-25(17)21(26)16-7-9-18(28-2)19(12-16)29-3/h6-9,11-13H,4-5,10H2,1-3H3,(H,24,27)
• Clé InChI: IZLRMTJLQCLMKF-UHFFFAOYSA-N

Description

Description générale

A cell-permeable, bioavailable positive optical isomer of the racemate EMD-53998 that binds to the allosteric pocket of myosin motor domain (K_D = 7.3 µM) and stimulates actomyosin ATPase activity (AC₅₀ = 7.0 µM for β-cardiac myosin and 15.1 µM for skeletal muscle myosin). Exerts a positive inotropic effects on cardiac muscle and enhances diastolic performance while reducing oxygen cost of contraction in a canine canine model of tachycardia-induced heart failure. Acts as a pharmacological chaperone to protect β-cardiac myosin against heat stress and thermal denaturation and can induce refolding and reactivation of heat-inactivated myosin ATPase.

The cell-permeable (+) enantiomer of the racemic tetrahydroquinoline EMD-53998 is reported to enhance myosin motor function via an 1:1 allosteric interaction with motor N-terminal SH3-like βbarrel subdomain (K_D = 7.3 & 23 µM, respectively, using 100 nM porcine β-cardiac myosin S1 & rabbit fast skeletal muscle heavy meromyosin/HMM), restoring the ATP-binding activity of misfolded moysin as well as enhancing both basal and actin-dependent ATPase activity of myosin preparations (AC₅₀ in µM = 7.0/porcine β-cardiac myosin S1, 15.1/rabbit HMM, 25.8/amoeba Dictyostelium discoideum Dd myosin-2, and 35.4/Dd myosin-5b), while being ineffective toward fully denatured myosin or βbarrel subdomain-lacking Dd myosin-1B/-1C/-1D/-1E. Pro-hypertrophic effect of EMD 57033 is demonstrated in serum-free neonatal rat cardiomyocyte cultures in vitro under both normal and hyperthermia conditions (cell size enlargement by 60% at 37 °C and by 24% at 42 °C; 10 µM EMD 57033 for 24 hr) with a drastic decline in cellular atrial natriuretic peptide only under hyperthermia condition (% of 37 °C control ANP level = 47% vs. 140%, respectively, with or without 10 µM EMD 57033 for 24 h at 42 °C), while positive inotropic efficacy is reported in vivo (0.4 mg/kg/min for 20 min) in a canine model of tachycardia-induced heart failure. The (-) enantiomer EMD 57439 is a known PDE3 inhibitor with little potency toward myosin ATPase activity.

Actions biochimiques/physiologiques

Cell permeable: yes

Primary Target
myosin

Reversible: yes

Conditionnement

Packaged under inert gas

Avertissement

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 6 months at -20°C.

Autres remarques

Radke, M.B., et al. 2014. ELife3, e01603.

Senzaki, H., et al., 2000. Circulation101, 1040.
Gambassi, G., et al. 1993. Am. J. Physiol.264, H728.
Solaro, R.J., et al.1993. Circ. Res.73, 981.

Informations légales

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Informations sur la sécurité

• Pictogrammes: GHS07,GHS08
• Mention d'avertissement: Warning
• Mentions de danger: H302 - H319 - H335 - H373
• Conseils de prudence: P260 - P264 - P270 - P301 + P312 - P305 + P351 + P338 - P314
• Classification des risques: Acute Tox. 4 Oral - Eye Irrit. 2 - STOT RE 2 - STOT SE 3
• Organes cibles: Respiratory system
• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable