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While potassium chromate (K 2 CrO 4) is used in the manufacture of a host of different commercial products such as inks, dyes, wood stains (by reacting with the tannic acid in wood), explosives, fireworks, fly paper, and safety matches, [76] as well as in the tanning of leather, all of these uses are due to the chemistry of the chromate ion ...
The high resolution crystallographic structure of the rat K v α1.2/β2 channel has recently been solved ... Ion channel family; Potassium channel tetramerisation domain;
Potassium channel Kv1.2, structure in a membrane-like environment. Calculated hydrocarbon boundaries of the lipid bilayer are indicated by red and blue lines.. Potassium channels are the most widely distributed type of ion channel found in virtually all organisms. [1]
The sodium–potassium pump a critical enzyme for regulating sodium and potassium levels in cells. Potassium is the main intracellular ion for all types of cells, while having a major role in maintenance of fluid and electrolyte balance. [1] [2] Potassium is necessary for the function of all living cells and is thus present in all plant and ...
VO 2+, often in an ionic pairing with sodium (NaH 2 VO 4), is the second most abundant transition metal in seawater, with its concentration only being exceeded by molybdenum. [4] In the ocean the average concentration is 30 nM. Some mineral water springs also contain the ion in high concentrations.
The four types are K v 1, K v 2, K v 3 and K v 4. The K v 1 channel primarily influences the repolarization of the axon. The K v 2 channel is characteristically activated slower. The K v 4 channels are characteristically activated rapidly. When K v 2 and K v 4 channels are blocked, the action potential predictably widens. [12]
Treatment of the peroxide with potassium produces the oxide: [5] K 2 O 2 + 2 K → 2 K 2 O. Alternatively and more conveniently, K 2 O is synthesized by heating potassium nitrate with metallic potassium: 2 KNO 3 + 10 K → 6 K 2 O + N 2 ↑. Other possibility is to heat potassium peroxide at 500 °C which decomposes at that temperature giving ...
BK channels (big potassium), are large conductance calcium-activated potassium channels, [1] also known as Maxi-K, slo1, or Kca1.1. BK channels are voltage-gated potassium channels that conduct large amounts of potassium ions (K + ) across the cell membrane , hence their name, big potassium .