The rogue form of prion protein exists primarily in the conformation.

beta sheets

Explanation:

The proteinaceous particles that lack nucleic acids and are not viruses are termed as prions. In the healthy brain tissue, the prion proteins are present in the form PrPC, however, in case of prion disease, the normal protein becomes denatured and misfolded and exists in the rogue form which is PrPSc. The normal form that is PrPC mainly exists in the form of alpha-helices and can bind to copper, however, the rogue form exists mainly in the beta-sheet configuration and is resistant to proteolysis. 

Hunting in the darksome fish rely on senses beyond sight. in the darkness of the marianas trench, a fish called the rattail has an extremely sensitive sense of smell. the fish uses scent, rather than sight, to steer toward food. once it's near food, the rattail uses a special organ on the bottom of its chin to guide itself by feel.marine snowone staple of the deep sea diet is "marine snow," flakes of organic, edible substances that sink down from the upper ocean. animals at the ocean's bottom find sustenance in everything from the bodies of dead creatures to fecal matter. marine snow is diverse enough to support numerous species. for instance, several species of snails and worms feed exclusively on deceased whales.microorganismsthe deep sea is an intricate ecosystem, and even the ocean floor itself plays a part. hydrothermal vents are cracks in the sea floor where erupting magma mixes with ocean water to produce plumes of hot, sulfur-rich chemicals. some microbes can use these chemicals for energy, sustaining their existence and that of the animals who depend on their roles in the deep sea food chain.