thin filaments

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Related to thin filaments: thick filaments


(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.
Medical Dictionary, © 2009 Farlex and Partners

thin filaments

The actin filaments in muscle cells.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
References in periodicals archive ?
One troponin complex is present for every seven actins molecules along thin filaments (Gordon et al.; Moore et al., 2016; Lin et al, 2017).
Details on the regulation of cross-bridge cycling and the role of thick and thin filaments on contraction are reviewed elsewhere.
In addition to the structures in the cytoskeleton formed by the M- and Z-line, the three-dimensional organization of thick and thin filaments is provided by an organized network of intermediate filaments which adhere to the sarcomere periphery.
Ubiquitylation by Trim32 causes coupled loss of desmin, Z-bands, and thin filaments in muscle atrophy.
Nebulin regulates the assembly and lengths of the thin filaments in striated muscle.
Thin filaments (actin) are linked by [alpha]-actinin and anchored on both sides of the Z-line forming the limits of the sarcomere.
(1981) Three dimensional image analysis of the complex of thin filaments and myosin molecules from skeletal muscle.
(1994) [Ca.sup.2+]-induced tropomyosin movement in limulus thin filaments revealed by three-dimensional reconstruction.
(1995) Steric-blocking by tropomyosin visualized in relaxed vertebrate muscle thin filaments. J.
(1994) Calcium induced change in three-dimensional structure of thin filaments of rabbit skeletal muscle as revealed by cryoelectron microscopy.
(1997) Steric-model for activation of muscle thin filaments. J.
(1999) Tropomyosin positions in regulated thin filaments revealed by cryoelectron microscopy.