molecular function |
| GO:0051015 | | actin filament binding | | Interacting selectively and non-covalently with an actin filament, also known as F-actin, a helical filamentous polymer of globular G-actin subunits. |
| GO:0005509 | | calcium ion binding | | Interacting selectively and non-covalently with calcium ions (Ca2+). |
| GO:0048306 | | calcium-dependent protein binding | | Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules), in the presence of calcium. |
| GO:0046872 | | metal ion binding | | Interacting selectively and non-covalently with any metal ion. |
| GO:0005515 | | protein binding | | Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules). |
| GO:0042803 | | protein homodimerization activity | | Interacting selectively and non-covalently with an identical protein to form a homodimer. |
| GO:0031013 | | troponin I binding | | Interacting selectively and non-covalently with troponin I, the inhibitory subunit of the troponin complex. |
| GO:0031014 | | troponin T binding | | Interacting selectively and non-covalently with troponin T, the tropomyosin-binding subunit of the troponin complex. |
biological process |
| GO:0060048 | | cardiac muscle contraction | | Muscle contraction of cardiac muscle tissue. |
| GO:0002086 | | diaphragm contraction | | A process in which force is generated within involuntary skeletal muscle tissue, resulting in a change in muscle geometry. This process occurs in the diaphragm. Force generation involves a chemo-mechanical energy conversion step that is carried out by the actin/myosin complex activity, which generates force through ATP hydrolysis. The diaphragm is a striated muscle that is necessary for the process of respiratory gaseous exchange. |
| GO:0030049 | | muscle filament sliding | | The sliding of actin thin filaments and myosin thick filaments past each other in muscle contraction. This involves a process of interaction of myosin located on a thick filament with actin located on a thin filament. During this process ATP is split and forces are generated. |
| GO:0043462 | | regulation of ATPase activity | | Any process that modulates the rate of ATP hydrolysis by an ATPase. |
| GO:0006937 | | regulation of muscle contraction | | Any process that modulates the frequency, rate or extent of muscle contraction. |
| GO:0032972 | | regulation of muscle filament sliding speed | | Any process that modulates the velocity of muscle filament sliding. |
| GO:0010038 | | response to metal ion | | Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a metal ion stimulus. |
| GO:0014883 | | transition between fast and slow fiber | | The process of conversion of fast-contracting muscle fibers to a slower character. This may involve slowing of contractile rate, slow myosin gene induction, increase in oxidative metabolic properties, altered electrophysiology and altered innervation. This process also regulates skeletal muscle adapatation. |
| GO:0055010 | | ventricular cardiac muscle tissue morphogenesis | | The process in which the anatomical structures of cardiac ventricle muscle is generated and organized. |
cellular component |
| GO:0015629 | | actin cytoskeleton | | The part of the cytoskeleton (the internal framework of a cell) composed of actin and associated proteins. Includes actin cytoskeleton-associated complexes. |
| GO:0043292 | | contractile fiber | | Fibers, composed of actin, myosin, and associated proteins, found in cells of smooth or striated muscle. |
| GO:0005829 | | cytosol | | The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes. |
| GO:0005739 | | mitochondrion | | A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration. |
| GO:0005654 | | nucleoplasm | | That part of the nuclear content other than the chromosomes or the nucleolus. |
| GO:0005861 | | troponin complex | | A complex of accessory proteins (typically troponin T, troponin I and troponin C) found associated with actin in muscle thin filaments; involved in calcium regulation of muscle contraction. |