Results 21 to 30 of about 269,034 (318)

The efficiency of muscle contraction

Progress in Biophysics and Molecular Biology, 2005
When a muscle contracts and shortens against a load, it performs work. The performance of work is fuelled by the expenditure of metabolic energy, more properly quantified as enthalpy (i.e., heat plus work). The ratio of work performed to enthalpy produced provides one measure of efficiency.
Smith, Nicholas P., Barclay, Chris J., Loiselle, Denis S.   +2 more
openaire   +5 more sources

Calcium and muscle contraction

Progress in Biophysics and Molecular Biology, 1968
S. Ebashi, M. Endo
openaire   +4 more sources

Muscle pain induced by static contraction is modulated by transient receptor potential vanilloid 1 and ankyrin 1 receptors

Brazilian Journal of Pharmaceutical Sciences, 2022
Molecular mechanisms involved in the development of muscle pain induced by static contraction are not completely elucidated. This study aimed to evaluate the involvement of the transient receptor potential vanilloid 1 (TRPV1) and the transient receptor ...
Carolina Ocanha Jorge, Bruna de Melo-Aquino, Diogo Francisco da Silva dos Santos, Maria Cláudia Gonçalves de Oliveira   +3 more
doaj   +1 more source

Three-dimensional geometrical changes of the human tibialis anterior muscle and its central aponeurosis measured with three-dimensional ultrasound during isometric contractions [PDF]

PeerJ, 2016
Background. Muscles not only shorten during contraction to perform mechanical work, but they also bulge radially because of the isovolumetric constraint on muscle fibres.
Brent J. Raiteri, Andrew G. Cresswell, Glen A. Lichtwark   +2 more
doaj   +2 more sources

Structure of the Inhibited Smooth Muscle Myosin and Its Implications on the Regulation of Insect Striated Muscle Myosin

Life
Class II myosin (myosin-2) is an actin-based motor protein found in nearly all eukaryotes. One critical question is how the motor function of myosin-2 is regulated. Vertebrate myosin-2 comprises non-muscle myosin, smooth muscle myosin and striated muscle
Shaopeng Sun, Yi-Ning Lu, Xiang-dong Li
doaj   +1 more source

The effect of the aluminum chloride – quercetin complex on Ca(2+),Mg(2+)-ATPase activity and contraction dynamic properties of muscle tibialis anterior from Rana temporaria [PDF]

The Ukrainian Biochemical Journal, 2015
Combined effect of aluminum chloride and quercetin solutions on the enzymatic activity and contraction dynamics of muscle fiber bundles of the Rana temporaria m. tibialis anterior was investigated.
D. M. Nozdrenko, O. M. Аbramchuk, V. M. Soroca, N. S. Miroshnichenko   +3 more
doaj   +1 more source

Identification of a third myosin-5a-melanophilin interaction that mediates the association of myosin-5a with melanosomes

eLife
Transport and localization of melanosome at the periphery region of melanocyte are depended on myosin-5a (Myo5a), which associates with melanosome by interacting with its adaptor protein melanophilin (Mlph).
Jiabin Pan, Rui Zhou, Lin-Lin Yao, Jie Zhang, Ning Zhang, Qing-Juan Cao, Shaopeng Sun, Xiang-dong Li   +7 more
doaj   +1 more source

Determination of Dissociation Constants for the Interaction of Myosin-5a with its Cargo Protein Using Microscale Thermophoresis (MST)

Bio-Protocol
Myosin-5a (Myo5a) is an actin-dependent molecular motor that recognizes a diverse range of cargo proteins through its tail domain, playing a crucial role in the transport and localization of various organelles within the cell.
Rui Zhou, Jiabin Pan, Xiang-Dong Li
doaj   +1 more source

Multiscale Modeling of Skeletal Muscle Active Contraction in Relation to Mechanochemical Coupling of Molecular Motors

Micromachines, 2015
In this work, a mathematical model was developed to relate the mechanochemical characterizations of molecular motors with the macroscopic manifestation of muscle contraction.
Jiangcheng Chen, Xiaodong Zhang, Shengmao Lin, He Wang, Linxia Gu   +4 more
doaj   +1 more source

Dynamics of PO2 and VO2 in resting and contracting rat spinotrapezius muscle

Frontiers in Physiology, 2023
This study examined changes in interstitial PO2, which allowed calculation of VO2 during periods of rest, muscle contraction and recovery using an in situ rat spinotrapezius muscle preparation.
Aleksander S. Golub, Aleksander S. Golub, Bjorn K. Song, Bjorn K. Song, William H. Nugent, William H. Nugent, Roland N. Pittman   +6 more
doaj   +1 more source