thin filaments


Also found in: Dictionary, Thesaurus, Encyclopedia.
Related to thin filaments: thick filaments

filament

(fil′ă-mĕnt) [L. filamentum, threading]
1. A fine thread.
2. A threadlike coil of tungsten found in the x-ray tube that is the source of electrons.

axial filament

A filament forming the central axis of the flagellum of a spermatozoon.

intermediate filament

Abbreviation: IF
Slender proteins found in all eukaryotic cells, measuring about 8 to 12 nm in diameter. Intermediate filaments are composed of proteins including desmin, keratins, lamins, and vimentin and together with microtubules and microfilaments form the cytoskeleton. Some malignant cells can be identified by the specific proteins in their intermediate filaments.

thick filaments

Myosin, seen microscopically.

thin filaments

Actin, seen microscopically.

thin filaments

The actin filaments in muscle cells.
References in periodicals archive ?
1999) Calcium induced changes in the location and conformation of troponin in skeletal muscle thin filaments.
1979) X-ray diffraction patterns from molecular arrangements with 38-nm periodicities around muscle thin filaments.
1979) Structural changes in thin filaments of crab striated muscle.
2+]- and S1-induced movement of troponin T on reconstituted skeletal muscle thin filaments observed by fluorescence energy transfer spectroscopy.
2+]-induced distance change between points on actin and troponin in skeletal muscle thin filaments estimated by fluorescence energy transfer spectroscopy.
2004) Fluorescence resonance energy transfer between points on actin and the C-terminal region of tropomyosin in skeletal muscle thin filaments.
2+]-sensitive switch that regulates the contraction of striated muscles through a series of conformational changes within the actin-based thin filament.
1974) Localization of troponin in thin filament and tropomyosin paracrystal.
1967) Periodic distribution of troponin along the thin filament.
1998) A new look at thin filament regulation in vertebrate skeletal muscle.
1980) X-ray structure analysis of the thin filament of crab striated muscle in the rigor state.