A voltage-gated potassium channel subunit KCNA5 that is encoded in the genome of human. []
| Target | Category | Definition |
|---|
| signaling receptor binding | molecular function | Binding to one or more specific sites on a receptor molecule, a macromolecule that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function. [GOC:bf, GOC:ceb, ISBN:0198506732] |
| delayed rectifier potassium channel activity | molecular function | Enables the transmembrane transfer of a potassium ion by a delayed rectifying voltage-gated channel. A delayed rectifying current-voltage relation is one where channel activation kinetics are time-dependent, and inactivation is slow. [GOC:mah, PMID:11343411, PMID:2462513] |
| protein binding | molecular function | Binding to a protein. [GOC:go_curators] |
| outward rectifier potassium channel activity | molecular function | Enables the transmembrane transfer of a potassium ion by an outwardly-rectifying voltage-gated channel. An outwardly rectifying current-voltage relation is one where at any given driving force the outward flow of K+ ions exceeds the inward flow for the opposite driving force. [GOC:mah] |
| protein kinase binding | molecular function | Binding to a protein kinase, any enzyme that catalyzes the transfer of a phosphate group, usually from ATP, to a protein substrate. [GOC:jl] |
| alpha-actinin binding | molecular function | Binding to alpha-actinin, one of a family of proteins that cross-link F-actin as antiparallel homodimers. Alpha-actinin has a molecular mass of 93-103 KDa; at the N-terminus there are two calponin homology domains, at the C-terminus there are two EF-hands. These two domains are connected by the rod domain. This domain is formed by triple-helical spectrin repeats. [PMID:10984498, PMID:11699871, PMID:15014165] |
| voltage-gated potassium channel activity involved in bundle of His cell action potential repolarization | molecular function | Enables the transmembrane transfer of a potassium ion by a voltage-gated channel through the plasma membrane of a bundle of His cell contributing to the repolarization phase of an action potential. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded. [GOC:BHF, GOC:mtg_cardiac_conduct_nov11] |
| voltage-gated potassium channel activity involved in atrial cardiac muscle cell action potential repolarization | molecular function | Enables the transmembrane transfer of a potassium ion by a voltage-gated channel through the plasma membrane of an atrial cardiomyocyte contributing to the repolarization phase of an action potential. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded. [GOC:BHF, GOC:mtg_cardiac_conduct_nov11] |
| voltage-gated potassium channel activity involved in SA node cell action potential repolarization | molecular function | Enables the transmembrane transfer of a potassium ion by a voltage-gated channel through the plasma membrane of an SA node cell contributing to the repolarization phase of an action potential. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded. [GOC:BHF, GOC:mtg_cardiac_conduct_nov11] |
| scaffold protein binding | molecular function | Binding to a scaffold protein. Scaffold proteins are crucial regulators of many key signaling pathways. Although not strictly defined in function, they are known to interact and/or bind with multiple members of a signaling pathway, tethering them into complexes. [GOC:BHF, GOC:sjp, PMID:10433269, Wikipedia:Scaffold_protein] |
| Target | Category | Definition |
|---|
| Golgi apparatus | cellular component | A membrane-bound cytoplasmic organelle of the endomembrane system that further processes the core oligosaccharides (e.g. N-glycans) added to proteins in the endoplasmic reticulum and packages them into membrane-bound vesicles. The Golgi apparatus operates at the intersection of the secretory, lysosomal, and endocytic pathways. [ISBN:0198506732] |
| plasma membrane | cellular component | The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins. [ISBN:0716731363] |
| cell surface | cellular component | The external part of the cell wall and/or plasma membrane. [GOC:jl, GOC:mtg_sensu, GOC:sm] |
| intercalated disc | cellular component | A complex cell-cell junction at which myofibrils terminate in cardiomyocytes; mediates mechanical and electrochemical integration between individual cardiomyocytes. The intercalated disc contains regions of tight mechanical attachment (fasciae adherentes and desmosomes) and electrical coupling (gap junctions) between adjacent cells. [GOC:mtg_muscle, PMID:11732910] |
| Z disc | cellular component | Platelike region of a muscle sarcomere to which the plus ends of actin filaments are attached. [GOC:mtg_muscle, ISBN:0815316194] |
| membrane raft | cellular component | Any of the small (10-200 nm), heterogeneous, highly dynamic, sterol- and sphingolipid-enriched membrane domains that compartmentalize cellular processes. Small rafts can sometimes be stabilized to form larger platforms through protein-protein and protein-lipid interactions. [PMID:16645198, PMID:20044567] |
| intracellular canaliculus | cellular component | An apical plasma membrane part that forms a narrow enfolded luminal membrane channel, lined with numerous microvilli, that appears to extend into the cytoplasm of the cell. A specialized network of intracellular canaliculi is a characteristic feature of parietal cells of the gastric mucosa in vertebrates. [GOC:mah, ISBN:0721662544, PMID:10700045] |
| perinuclear region of cytoplasm | cellular component | Cytoplasm situated near, or occurring around, the nucleus. [GOC:jid] |
| Target | Category | Definition |
|---|
| response to hypoxia | biological process | 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 stimulus indicating lowered oxygen tension. Hypoxia, defined as a decline in O2 levels below normoxic levels of 20.8 - 20.95%, results in metabolic adaptation at both the cellular and organismal level. [GOC:hjd] |
| Notch signaling pathway | biological process | The series of molecular signals initiated by an extracellular ligand binding to the receptor Notch on the surface of a target cell, and ending with the regulation of a downstream cellular process, e.g. transcription. [GOC:go_curators, GOC:signaling] |
| response to mechanical stimulus | biological process | 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 mechanical stimulus. [GOC:hb] |
| response to organic substance | biological process | 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 an organic substance stimulus. [GOC:sm, PMID:23356676] |
| regulation of vasoconstriction | biological process | Any process that modulates the frequency, rate or extent of reductions in the diameter of blood vessels. [GOC:jl] |
| regulation of membrane potential | biological process | Any process that modulates the establishment or extent of a membrane potential, the electric potential existing across any membrane arising from charges in the membrane itself and from the charges present in the media on either side of the membrane. [GOC:jl, GOC:mtg_cardio, GOC:tb, ISBN:0198506732] |
| response to hydrogen peroxide | biological process | 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 hydrogen peroxide (H2O2) stimulus. [GOC:jl] |
| regulation of potassium ion transport | biological process | Any process that modulates the frequency, rate or extent of the directed movement of potassium ions (K+) into, out of or within a cell, or between cells, by means of some agent such as a transporter or pore. [GOC:jl] |
| regulation of insulin secretion | biological process | Any process that modulates the frequency, rate or extent of the regulated release of insulin. [GOC:ai] |
| protein homooligomerization | biological process | The process of creating protein oligomers, compounds composed of a small number, usually between three and ten, of identical component monomers. Oligomers may be formed by the polymerization of a number of monomers or the depolymerization of a large protein polymer. [GOC:ai] |
| negative regulation of cytosolic calcium ion concentration | biological process | Any process that decreases the concentration of calcium ions in the cytosol. [GOC:ai] |
| potassium ion homeostasis | biological process | Any process involved in the maintenance of an internal steady state of potassium ions within an organism or cell. [GOC:jid, GOC:mah] |
| response to hyperoxia | biological process | 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 stimulus indicating increased oxygen tension. [GOC:kmv] |
| membrane hyperpolarization | biological process | The process in which membrane potential increases with respect to its steady-state potential, usually from negative potential to a more negative potential. For example, during the repolarization phase of an action potential the membrane potential often becomes more negative or hyperpolarized before returning to the steady-state resting potential. [GOC:dph] |
| regulation of atrial cardiac muscle cell membrane repolarization | biological process | Any process that modulates the establishment or extent of a membrane potential in the polarizing direction towards the resting potential in an atrial cardiomyocyte. [GOC:dph, GOC:tb] |
| potassium ion transmembrane transport | biological process | A process in which a potassium ion is transported from one side of a membrane to the other. [GOC:mah] |
| atrial cardiac muscle cell action potential | biological process | An action potential that occurs in an atrial cardiac muscle cell. [GOC:BHF, GOC:mtg_cardiac_conduct_nov11] |
| membrane repolarization during bundle of His cell action potential | biological process | The process in which ions are transported across a membrane such that the bundle of His cardiac muscle cell membrane potential changes in the direction from the positive membrane potential at the peak of the action potential towards the negative resting potential. [GOC:BHF, GOC:dph, GOC:mtg_cardiac_conduct_nov11] |
| membrane repolarization during SA node cell action potential | biological process | The process in which an SA node cardiac muscle cell membrane potential changes in the direction from the positive membrane potential at the peak of the action potential towards the negative resting potential. [GOC:BHF, GOC:dph, GOC:mtg_cardiac_conduct_nov11] |
| regulation of heart rate by cardiac conduction | biological process | A cardiac conduction process that modulates the frequency or rate of heart contraction. [GOC:BHF, GOC:mtg_cardiac_conduct_nov11] |
| potassium ion export across plasma membrane | biological process | The directed movement of potassium ions from inside of a cell, across the plasma membrane and into the extracellular region. [GOC:vw, PMID:11932440] |
| membrane repolarization during atrial cardiac muscle cell action potential | biological process | The process in which ions are transported across a membrane such that the atrial cardiomyocyte membrane potential changes in the direction from the positive membrane potential at the peak of the action potential towards the negative resting potential. [GOC:dph, GOC:mtg_cardiac_conduct_nov11, GOC:tb] |
| positive regulation of G1/S transition of mitotic cell cycle | biological process | Any signaling pathway that increases or activates a cell cycle cyclin-dependent protein kinase to modulate the switch from G1 phase to S phase of the mitotic cell cycle. [GOC:mtg_cell_cycle] |
| positive regulation of myoblast proliferation | biological process | Any process that activates or increases the frequency, rate or extent of myoblast proliferation. [GOC:BHF] |
| action potential | biological process | A process in which membrane potential cycles through a depolarizing spike, triggered in response to depolarization above some threshold, followed by repolarization. This cycle is driven by the flow of ions through various voltage gated channels with different thresholds and ion specificities. [GOC:dph, GOC:go_curators, GOC:tb, ISBN:978-0-07-139011-8] |