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Tag: "poison" at biology news

High fidelity keeps human DNA assembly line humming

...room toxin, alpha-amanitin. Alpha-amanitin is the poison of the death cap mushroom, which can be deadly to humans. In 54 A.D., Emperor Tiberius Claudius was fed a death cap mushroom by his wife Agrippina to put her son Nero on the throne of ancient Rome. Alpha-amanitin kills people by stalling movement of ...

At the molecular level, the predator is the prey

...n result. Tetrodotoxin (TTX), a powerful paralytic poison concentrated in the newts' skin, can bind to garter snake nerve cell channels and prevent sodium ions from flowing freely. "These channels are absolutely fundamental to every aspect of nerve and muscle function and are highly specific gateways for s...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

... tides, which release toxins in the water that can poison mollusks and fish. Excessively large blooms can also overwhelm a marine ecosystem by depleting oxygen in the water. Scientists suspect that many harmful blooms are artificially fueled by fertilizer runoff from farms, which dump tons of excess nitroge...

Neuronal 'traffic jam' marks early Alzheimer's disease

...er production of A-beta peptide, which may further poison the machinery." Goldstein theorized that Alzheime...ions they will also ask is whether amyloid plaques poison the transport machinery. If the experiments do, indeed, confirm the predictions of the transport hyp...

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