Power plant Quote by Andrew Koob
““Blocking inositol triphosphate stops the wave. Inositol triphosphate receptor activation by calcium can desensitize the receptors. Inositol triphosphate is more sensitive to their receptors, but it is also less reactive than calcium and can act over many areas of the cell. Calcium and inositol triphosphate act like a hand on a faucet when they bind their receptors on the endoplasmic reticulum. After turning on the faucet, calcium flows out. The release of calcium from internal endoplasmic reticulum through these receptors results in sparks or puffs before it is sequestered back into the endoplasmic reticulum. These sparks or puffs can be amplified by neighboring endoplasmic reticulum as calcium itself releases more calcium stores. To get calcium back into the endoplasmic reticulum, energy must be used. ATP (Adenosine-5-triphosphate) is produced by the mitochondria, the power plants of the cell, by using energy from the blood. ATP consumption in the cell is similar to world oil consumption. It is the voracious creation of energy and power. Believe it or not, the ion that stimulates ATP production in the mitochondria is none other than calcium. When we eat and drink, our body breaks down our foods into energy. This energy is required for the mitochondria to produce ATP. Fats and sugars are broken down into units that are eventually utilized by the mitochondria transport system. When there is not enough energy available, calcium is unable to pump back into the endoplasmic reticulum and calcium diffusion can””
About This Quote
The passage describes how calcium and inositol triphosphate regulate cellular signaling and energy production, emphasizing their interplay in the endoplasmic reticulum and mitochondria.
In simple terms: Calcium and a signaling molecule control cell energy and signaling.
Understand how calcium signaling links to cellular energy.
Themes
Mood
Type
When to use this quote
- research labs
- pharmacology
- medical education
- nutrition studies
- cellular physiology
Key Concepts
Questions to Reflect On
- How does calcium signaling affect metabolic diseases?
- What therapeutic targets arise from modulating IP3 receptors?
The description oversimplifies complex feedback loops and may mislead without quantitative context.