Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Arthur S. Rovner"'
Autor:
Arthur S. Rovner, Susan Lowey, James Gulick, Leanne M. Lesko, Robert B. Low, Sheryl L. White, Mercedes Rincon, Alex R. Hodges, Jeffrey Robbins
Publikováno v:
Journal of Biological Chemistry. 283:20579-20589
The R403Q mutation in the beta-myosin heavy chain (MHC) was the first mutation to be linked to familial hypertrophic cardiomyopathy (FHC), a primary disease of heart muscle. The initial studies with R403Q myosin, isolated from biopsies of patients, s
Autor:
Arthur S. Rovner, Amy S. Miner, Paul H. Ratz, Daniel P. Meer, Thomas J. Eddinger, Joel T. Meehl
Publikováno v:
Journal of Pharmacology and Experimental Therapeutics. 320:865-870
Blebbistatin is reported to be a selective and specific small molecule inhibitor of the myosin II isoforms expressed by striated muscles and nonmuscle (IC(50) = 0.5-5 microM) but is a poor inhibitor of purified turkey smooth muscle myosin II (IC(50)
Publikováno v:
Biochemistry. 45:5280-5289
Regulatory light chain (RLC) phosphorylation activates smooth and non-muscle myosin II, but it has not been established if phosphorylation of one head turns on the whole molecule. Baculovirus expression and affinity chromatography were used to isolat
Autor:
David M. Warshaw, Arthur S. Rovner, Peteranne B. Joel, Neil M. Kad, Guy G. Kennedy, Kathleen M. Trybus, Joseph B. Patlak, Patricia M. Fagnant
Publikováno v:
The Journal of Cell Biology
Each of the heads of the motor protein myosin II is capable of supporting motion. A previous report showed that double-headed myosin generates twice the displacement of single-headed myosin (Tyska, M.J., D.E. Dupuis, W.H. Guilford, J.B. Patlak, G.S.
Publikováno v:
Journal of Biological Chemistry. 278:26938-26945
The interaction between the two heads of myosin II during motion and force production is poorly understood. To examine this issue, we developed an expression and purification strategy to isolate homogeneous populations of heterodimeric smooth muscle
Publikováno v:
Journal of Biological Chemistry. 275:25481-25487
To examine the structural basis of the intrinsic fluorescence changes that occur during the MgATPase cycle of myosin, we generated three mutants of smooth muscle myosin motor domain essential light chain (MDE) containing a single conserved tryptophan
Autor:
Arthur S. Rovner
Publikováno v:
Journal of Biological Chemistry. 273:27939-27944
Chimeric substitution of the weak actin-binding loop (ABL) from chicken skeletal muscle myosin for that of gizzard smooth muscle heavy meromyosin (HMM) causes activation of the dephosphorylated mutant (SABL HMM; Rovner, A. S., Freyzon, Y., and Trybus
Autor:
David M. Warshaw, Yelena Freyzon, Arthur S. Rovner, Matthew J. Tyska, Anne-Marie Lauzon, Kathleen M. Trybus
Publikováno v:
Journal of Muscle Research & Cell Motility. 19:825-837
Two smooth muscle myosin heavy chain isoforms differ by a 7-amino- acid insert in a flexible surface loop located near the nucleotide binding site. The non-inserted isoform is predominantly found in tonic muscle, while the inserted isoform is mainly
Publikováno v:
Journal of Muscle Research and Cell Motility. 18:103-110
Smooth muscle myosin isoforms of the heavy chain and the essential light chain have been hypothesized to contribute to the different shortening velocities of phasic and tonic smooth muscles, and to their different affinities for MgADP. We used the ba
Publikováno v:
Journal of Biological Chemistry. 270:30260-30263
Regulatory light chain (RLC) phosphorylation is necessary to activate smooth muscle myosin, unlike constitutively active striated muscle myosins. Here we show that an actin-binding surface loop located at the 50/20-kDa junction contributes to this fu