myosin
Contractile fiber protein
Myosin is a protein that enables muscle contraction.
It works with actin—another protein—to produce movement when muscles tense.
Myosin filaments slide along actin filaments, shortening muscle fibers.
Beyond muscles, myosin drives cellular processes like division and transport of materials within cells.
Cellular contractile protein
- powerstrokeCombustion-driven piston movement
- troponinMuscle regulatory protein complex
- calciumElement twenty, builds bones
- striationParallel linear marking
Z-disc · relaxation · shortening · tension
Larger antibody polypeptide
- coiled-coilHelices twisted together
- hexamerSix-membered molecular complex
- polymerizationMonomers bonding into chains
Internal protein support structure
- cytokinesisCytoplasmic division after mitosis
- cell divisionParent splitting into offspring
- endocytosisCell engulfs external material
- exocytosisVesicular release from cells
Quickly contracting muscle fibers
- slow twitchEndurance-oriented muscle fibers
- hypertrophyTissue enlargement via cells
- atrophyWasting from disuse
- muscular dystrophyGenetic muscle-wasting condition
Self-generated movement capacity
- vesicleSmall fluid-filled sac
- cargoTransported goods
- directionalityHaving a specific heading
- lever armPerpendicular fulcrum distance
Phosphate group attachment process
- regulationOfficial rules governing conduct
- binding siteMolecular attachment region
- kineticsScience of motion forces
- affinityNatural liking or attraction
actin
Cellular contractile protein
- powerstrokeCombustion-driven piston movement
- troponinMuscle regulatory protein complex
- calciumElement twenty, builds bones
striation · Z-disc · relaxation · shortening · tension
heavy chain
Larger antibody polypeptide
- coiled-coilHelices twisted together
- hexamerSix-membered molecular complex
- polymerizationMonomers bonding into chains
cytoskeleton
Internal protein support structure
- cytokinesisCytoplasmic division after mitosis
- cell divisionParent splitting into offspring
- endocytosisCell engulfs external material
fast twitch
Quickly contracting muscle fibers
- slow twitchEndurance-oriented muscle fibers
- hypertrophyTissue enlargement via cells
- atrophyWasting from disuse
muscular dystrophy · cardiomyopathy · myopathy · regeneration
motility
Self-generated movement capacity
- vesicleSmall fluid-filled sac
- cargoTransported goods
- directionalityHaving a specific heading
phosphorylation
Phosphate group attachment process
- regulationOfficial rules governing conduct
- binding siteMolecular attachment region
- kineticsScience of motion forces
- muscle systembiceps, triceps, deltoid, deltoids, quadriceps
- Biochemicalsamino acid, amino acids, protein, proteins, DNA
- cell biologycell membrane, cell division, cytoplasm, ribosome, mitochondria
- proteinsprotein, proteins, albumin, collagen, casein
- Microscopicbacterium, virus, amoeba, paramecium, microbe
- meat sciencemyoglobin, collagen, rigor mortis, marbling, tenderness