Calcium ions (Ca2+) contribute to the physiology and biochemistry of organisms' cells. They play an important role in signal transduction pathways, where...

the endoplasmic reticulum (ER), or into the mitochondria. Calcium signaling occurs when the cell is stimulated to release Ca2+ ions from intracellular stores...

Release of this calcium back into the cell's interior can occur via a sodium-calcium exchange protein or via "calcium-induced-calcium-release" pathways...

Calcium is a chemical element; it has symbol Ca and atomic number 20. As an alkaline earth metal, calcium is a reactive metal that forms a dark oxide-nitride...

allow calcium as well as other cations to pass through the membrane. Calcium channels can participate in the creation of action potentials across cell membranes...

channels found in the membrane of excitable cells (e.g. muscle, glial cells, neurons) with a permeability to the calcium ion Ca2+. These channels are slightly...

inside the cell). This change in potential difference opens the voltage-gated calcium channels, which allows calcium ions from outside the cell to move into...

Cell Calcium is a monthly peer-reviewed scientific journal published by Elsevier that covers the field of cell biology and focuses mainly on calcium signalling...

calcium levels. PTH plays an important role in regulating blood calcium levels by raising the amount of calcium in the blood. Parathyroid chief cells...

Calcium channel blockers (CCB), calcium channel antagonists or calcium antagonists are a group of medications that disrupt the movement of calcium (Ca2+)...

regulation, since calcium ions influence cell turgor pressure, which is the pressure exerted by the cell contents against the cell wall. Calcium chloride's freezing-point...

triggers the release of calcium from the cell's internal calcium store, the sarcoplasmic reticulum. The rise in calcium causes the cell's myofilaments to slide...

Calcium-binding proteins are proteins that participate in calcium cell signaling pathways by binding to Ca2+, the calcium ion that plays an important...

Calcium imaging is a microscopy technique to optically measure the calcium (Ca2+) status of an isolated cell, tissue or medium. Calcium imaging takes...

in endocrine cells of the adrenal cortex. They are also found in neurons, and with the help of L-type calcium channels in endocrine cells, they regulate...

abbreviation for calcium-modulated protein) is a multifunctional intermediate calcium-binding messenger protein expressed in all eukaryotic cells. It is an intracellular...

the parafollicular cells of the thyroid gland when the plasma level of calcium is above the normal range in order to lower it. Calcium is the most abundant...

muscle cells that is similar to the smooth endoplasmic reticulum in other cells. The main function of the SR is to store calcium ions (Ca2+). Calcium ion...

proteins found in a cell membrane. They are associated with the signal which occurs when a single calcium ion channel opens on a cell membrane, allowing...

T-type calcium channels are low voltage activated calcium channels that become inactivated during cell membrane hyperpolarization but then open to depolarization...

(a major store of Ca2+) of mammalian cells, the CRAC channel is activated to slowly replenish the level of calcium in the endoplasmic reticulum. The Ca2+...

cells progress through division. Exquisite control of intracellular calcium dynamics are required, as calcium appears to play a role at multiple cell...

sodium-calcium exchanger (often denoted Na+/Ca2+ exchanger, exchange protein, or NCX) is an antiporter membrane protein that removes calcium from cells. It...

regulate Ca(2+) signals and insulin secretion in pancreatic beta-cell". Cell Calcium. 39 (2): 155–162. doi:10.1016/j.ceca.2005.10.005. PMID 16321437....

blocking of IgE-regulated calcium channels. Without intracellular calcium, the histamine vesicles cannot fuse to the cell membrane and degranulate. As...

and signals the oscillation of calcium that hyperpolarizes gonadotropic cell membranes. This oscillation of calcium ions occurs through the resultant...

open allowing sodium and calcium to rush into the cell. The influx of calcium begins a cascade of events within the cell. Calcium first binds to calmodulin...

also spelled hypercalcaemia, is a high calcium (Ca2+) level in the blood serum. The normal range for total calcium is 2.1–2.6 mmol/L (8.8–10.7 mg/dL, 4...

Calcium silicate can refer to several silicates of calcium including: CaO·SiO2, wollastonite (CaSiO3) 2CaO·SiO2, larnite (Ca2SiO4) 3CaO·SiO2, alite or...

Calcium chloride (CaCl2) transformation is a laboratory technique in prokaryotic (bacterial) cell biology. The addition of calcium chloride to a cell...