Search Results - "Cremo, Christine R"
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Biochemistry of smooth muscle myosin light chain kinase
Published in Archives of biochemistry and biophysics (15-06-2011)“…► We summarize biochemical work on smooth muscle MLCK pertaining to smooth muscle function. ► Focus is on discussion of new findings, areas that require…”
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2
Velocities of unloaded muscle filaments are not limited by drag forces imposed by myosin cross-bridges
Published in Proceedings of the National Academy of Sciences - PNAS (08-09-2015)“…It is not known which kinetic step in the acto-myosin ATPase cycle limits contraction speed in unloaded muscles (V₀). Huxley’s 1957 model [Huxley AF (1957)Prog…”
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3
kinesin-1 motor protein is regulated by a direct interaction of its head and tail
Published in Proceedings of the National Academy of Sciences - PNAS (01-07-2008)“…Kinesin-1 is a molecular motor protein that transports cargo along microtubules. Inside cells, the vast majority of kinesin-1 is regulated to conserve ATP and…”
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4
Direct evidence for functional smooth muscle myosin II in the 10S self-inhibited monomeric conformation in airway smooth muscle cells
Published in Proceedings of the National Academy of Sciences - PNAS (25-01-2011)“…The 10S self-inhibited monomeric conformation of myosin II has been characterized extensively in vitro. Based upon its structural and functional…”
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5
Role of the Tail in the Regulated State of Myosin 2
Published in Journal of molecular biology (20-05-2011)“…Myosin 2 from vertebrate smooth muscle or non-muscle sources is in equilibrium between compact, inactive monomers and thick filaments under physiological…”
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6
Diffusion of myosin light chain kinase on actin: A mechanism to enhance myosin phosphorylation rates in smooth muscle
Published in The Journal of general physiology (01-10-2015)“…Smooth muscle myosin (SMM) light chain kinase (MLCK) phosphorylates SMM, thereby activating the ATPase activity required for muscle contraction. The abundance…”
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7
Modification of Interface between Regulatory and Essential Light Chains Hampers Phosphorylation-dependent Activation of Smooth Muscle Myosin
Published in The Journal of biological chemistry (22-06-2012)“…We examined the regulatory importance of interactions between regulatory light chain (RLC), essential light chain (ELC), and adjacent heavy chain (HC) in the…”
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8
Broad disorder and the allosteric mechanism of myosin II regulation by phosphorylation
Published in Proceedings of the National Academy of Sciences - PNAS (17-05-2011)“…Double electron electron resonance EPR methods was used to measure the effects of the allosteric modulators, phosphorylation, and ATP, on the distances and…”
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Evidence for S2 flexibility by direct visualization of quantum dot-labeled myosin heads and rods within smooth muscle myosin filaments moving on actin in vitro
Published in The Journal of general physiology (01-03-2021)“…Myosins in muscle assemble into filaments by interactions between the C-terminal light meromyosin (LMM) subdomains of the coiled-coil rod domain. The two head…”
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10
Isoform selectivities of novel 4-hydroxycoumarin imines as inhibitors of myosin II
Published in European journal of medicinal chemistry (05-02-2023)“…Muscle myosin inhibition could be used to treat many medical conditions involving hypercontractile states, including muscle spasticity, chronic musculoskeletal…”
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11
Using the SpyTag SpyCatcher system to label smooth muscle myosin II filaments with a quantum dot on the regulatory light chain
Published in Cytoskeleton (Hoboken, N.J.) (01-02-2019)“…The regulatory light chain (RLC) of myosin is commonly tagged to monitor myosin behavior in vitro, in muscle fibers, and in cells. The goal of this study was…”
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12
The N-terminal Lobes of Both Regulatory Light Chains Interact with the Tail Domain in the 10 S-inhibited Conformation of Smooth Muscle Myosin
Published in The Journal of biological chemistry (15-12-2006)“…In the presence of ATP, unphosphorylated smooth muscle myosin can form a catalytically inactive monomer that sediments at 10 Svedbergs (10 S). The tail of 10 S…”
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13
Novel Sensors of the Regulatory Switch on the Regulatory Light Chain of Smooth Muscle Myosin
Published in The Journal of biological chemistry (17-09-2004)“…Smooth muscle myosin can be switched on by phosphorylation of Ser-19 of the regulatory light chain. Our previous photocross-linking results suggested that an…”
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14
The Kinetics Underlying the Velocity of Smooth Muscle Myosin Filament Sliding on Actin Filaments in Vitro
Published in The Journal of biological chemistry (25-07-2014)“…Actin-myosin interactions are well studied using soluble myosin fragments, but little is known about effects of myosin filament structure on mechanochemistry…”
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15
Structural Model of the Regulatory Domain of Smooth Muscle Heavy Meromyosin
Published in The Journal of biological chemistry (14-02-2003)“…The goal of this study was to provide structural information about the regulatory domains of double-headed smooth muscle heavy meromyosin, including the N…”
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Both Heads of Tissue-derived Smooth Muscle Heavy Meromyosin Bind to Actin in the Presence of ADP
Published in The Journal of biological chemistry (14-02-2003)“…The effect of ADP and phosphorylation upon the actin binding properties of heavy meromyosin was investigated using three fluorescence methods that monitor the…”
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A mixed-kinetic model describes unloaded velocities of smooth, skeletal, and cardiac muscle myosin filaments in vitro
Published in Science advances (01-12-2017)“…In vitro motility assays, where purified myosin and actin move relative to one another, are used to better understand the mechanochemistry of the actomyosin…”
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18
Sucrose increases the activation energy barrier for actin–myosin strong binding
Published in Archives of biochemistry and biophysics (15-06-2014)“…•Sucrose slows actin sliding velocities by inhibiting the rate of actin–myosin strong binding.•Sucrose specifically inhibits actin–myosin strong bond formation…”
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Myosin light chain kinase steady-state kinetics: comparison of smooth muscle myosin II and nonmuscle myosin IIB as substrates
Published in Cell biochemistry and function (01-10-2016)“…Myosin light chain kinase (MLCK) phosphorylates S19 of the myosin regulatory light chain (RLC), which is required to activate myosin's ATPase activity and…”
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20
The Myosin Duty Ratio Tunes the Calcium Sensitivity and Cooperative Activation of the Thin Filament
Published in Biochemistry (Easton) (17-09-2013)“…In striated muscle, calcium binding to the thin filament (TF) regulatory complex activates actin–myosin ATPase activity, and actin–myosin kinetics in turn…”
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