thin filament


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Related to thin filament: Thick filament

ac·tin fil·a·ment

one of the contractile elements in muscular fibers and other cells; in skeletal muscle, the actin filaments are about 7.5 nm wide and 1 mcm long, and attach to the transverse Z filaments.
Synonym(s): thin filament

thin filament

In a sarcomere, one of the collection of contractile filaments made primarily of actin, seen microscopically.
References in periodicals archive ?
The Z-line proteins create a special network of interactions that acts as a scaffold and connects the thin filaments from adjacent sarcomeres (Sanger et al.).
(1980) X-ray structure analysis of the thin filament of crab striated muscle in the rigor state.
Ratio of thin filament to the thick filament is more than 1:10 and the mitochondrial area is approximately 25%.
According to the sliding filament theory, during contraction the sets of thin filaments in each half of sarcomere are drawn toward the center of A band and subjected to sliding forces oriented in opposite directions[5-7] The sliding filament theory very well explained the shortening of skeletal muscle during contraction with reference to a single sarcomere with movement of Z discs toward center of that particular sarcomere.
In simulations of cosmic evolution, gravity transforms the primordial soup into weblike structures of material, in which growing galaxy clusters are fed by gas that spools in along thin filaments of dark matter.
This leads to binding of Ca ions to the regulatory protein, troponin, which switches on thin filaments and allows thick myosin filaments to bind the thin filaments.
Fields of texture--splatters, leopardlike spots the artist makes with her fingertips, tiny venous marks created with a paper towel--add to the welter of visual information, as do thin filaments of graphite or acrylic that arc and weave among the layered forms.
"It's so small it can be placed into environments that aren't accessible with larger sensors." Strano said the sensors are made up of thin filaments of carbon molecules known as carbon nanotubes.
Thin filaments and myosin were isolated from biopsies and mechanically assessed using the in vitro motility assay.
Key statement: A tension-exerted hoop for plastic and rubber articles comprises a tension-exerted (lock) hoop made up of a plurality of flexible wires wound into a hoop-shaped configuration wherein the flexible wires are respectively twined and bundled up via multiple thin filaments into identical-diameter wires each having a combining coarse surface defined by protruded and recessed sections at the outer periphery thereon.
Wire users have to be careful when paying extremely thin filaments off a spool.