Related topics: protein

Molecules form gels to help cells sense and respond to stress

A specific protein inside cells senses threatening changes in its environment, such as heat or starvation, and triggers an adaptive response to help the cell continue to function and grow under stressful conditions, according ...

The stability of the solar wind

NASA's Wind spacecraft observes the solar wind before it impacts the magnetosphere of Earth. Launched in 1994 into an orbit more than two hundred Earth-radii away, one of Wind's prime objectives is to investigate the basic ...

The physical properties of dense molecular clouds

Small, dense interstellar clouds of gas and dust, containing hundreds to thousands of solar-masses of material, are suspected of being the precursors to stars and stellar clusters. These so-called cores, with gas densities ...

Herschel sees budding stars and a giant, strange ring

The Herschel Space Observatory has uncovered a weird ring of dusty material while obtaining one of the sharpest scans to date of a huge cloud of gas and dust, called NGC 7538. The observations have revealed numerous clumps ...

Without a trace: Cells keep to one direction by erasing the path

(Phys.org) —Migrating cells, it seems, cover their tracks not for fear of being followed, but to keep moving forward. Scientists at the European Molecular Biology Laboratory (EMBL) in Heidelberg, Germany, have now shown ...

Fragments falling onto the Sun

(Phys.org) —Stars form as gravity coalesces the gas and dust in an interstellar cloud until the material develops clumps dense enough to become stars. Even after a star begins to burn its nuclear fuel it continues to grow ...

A fresh take on the Horsehead Nebula

(Phys.org) —To celebrate its 23rd year in orbit, the NASA/ESA Hubble Space Telescope has released a stunning new image of one of the most distinctive objects in our skies: the Horsehead Nebula. This image shows the nebula ...

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