noun
definition
A globular structural protein that polymerizes in a helical fashion to form an actin filament (or microfilament).
definition
One of the six isoforms of actin.
Examples of actin in a Sentence
The energy is used to recapture calcium and to unlink actin and myosin.
When the Pi leaves the myosin, the head binds the actin and the power stroke is released as the head bind actin.
The thin filament is made of a protein called actin.
Talin, a very widely expressed actin binding protein protein is also found in muscle cells (at fairly low concentrations ).
We conclude that precise control of actin filament dynamics by UNC-60B is required for proper integration of actin into myofibrils.
G-actin was polymerized into F-actin in a similar kinetic process to rabbit muscle actin was polymerized into F-actin in a similar kinetic process to rabbit muscle actin.
The USDA APHIS reviews indicate that promoters such as figwort mosaic virus or rice actin are often employed.
Only those which are known to bind actin are discussed below.
The G actin polymerizes to form filamentous or F actin.
Two small GTP-binding proteins are known to be involved in modulating actin dynamics.
Under some conditions cofilin severs actin filaments, providing new plus ends for nucleation of actin filament growth.
Video recording showed the fluorescent actin filament rotating like a propeller.
Giant mud loach was produced by linking the mud loach growth hormone with its actin promoter.
Since there are 13 actin subunits per helical turn, myosin V has a relatively long step length of 74 nm.
The actin monomer can exchange bound ADP for ATP.
Yeast actin filaments display ATP-dependent sliding movement over surfaces coated with rabbit muscle myosin.
The thicker filaments in the central portion of the sarcomere are composed of the protein myosin; the thinner filaments are primarily actin.
Figure 5. Salmonella produces Actin Binding Proteins to induce phagocytosis.
Bacteria use the same or similar mechanisms in order to induce actin polymerization.
After removal of excess unbound myosin, the concentration of G-actin was increased, to promote further actin polymerization.
Arp2/3, which nucleates actin polymerization, is abundant in lamellipodia.
Phagocytosis is an uptake mechanism based on a complex rearrangement of the actin cytoskeleton that delivers large extracellular particles into intracellular vacuoles.
Actin Filaments At least six different types of actin are synthesized by vertebrate cells.
The role of CCT in protein folding in eukaryotic cytosol is mainly concerned with the actin and tubulin protein families.
These markers included vimentin, desmin, smooth muscle actin and myosin.
These calcium ions then interact with muscle proteins within the cell, causing the proteins (actin and myosin) to slide past one another.
Recapture of calcium and unlinking of actin and myosin allow the muscle fiber to relax.