Sentences with phrase «myosin filaments of»
Titin ensures that the actin and myosin filaments of a sarcomere are positioned correctly and re-adjusts the sarcomere to its original length after muscle activity,» explains structural biologist Kristina Djinović - Carugo.
https://www.sciencedaily.com/ Not exact matches
Muscles contract because the muscle protein myosin uses its flexible head to ratchet its long tail along the filament of another muscle protein actin, dragging the ends of muscle cells inward.
«Sarcomeres are mainly made up of actin and myosin protein strands called filaments.
The junction moves from the front to the rear of the protozoan, probably powered by actin and myosin protein filaments, like those in human muscle, constricting the protozoan and pulling the host membrane over it.
One of the goals of this work is to measure the force generated by a single myosin molecule pulling against an actin filament.
This constriction results from actomyosin contractility, a co-ordinated movement of filaments made of a protein known as actin, and a motor protein known as myosin.
Recently, the combination of these two techniques has produced a new generation of experimental setups enabling the simultaneous manipulation of a biological substrate (for example an actin filament or a DNA molecule) and detection / localization of an interacting partner enzyme (for example myosin or a DNA - binding protein).
A ring composed of actin filaments and myosin motor proteins pinches the cell apart, producing two daughter cells with equal amounts of cellular components.
Scientists are interested in the timing of the movement of myosin along actin filaments which is driven by the power stroke — a process called lever arm swing.
For the science geeks, this is an increase in the number and size of the actin and myosin filaments within a muscle.
Rodent studies show that the number of titin filaments that surround each myosin filament can increase after exercise training (Bellafiore et al. 2009; Hidalgo et al. 2014; Krüger & Kötter, 2016), and this would be expected to increase titin - based stiffness, thereby increasing force during lengthening contractions (Lindstedt et al. 2001; Hidalgo et al. 2014).
When sarcomeres attempt to reduce length by increasing the amount of actin and myosin filaments that overlap, this produces tensile force within the muscle fiber that ultimately leads to muscle contractions.
Myofibrils, the functional units of myocytes, composed of actin and myosin filaments spanning the length of the muscle cell, do not serve as substrate for the proteasome in their native state (45).