Can you think of an un-designed process that employs external machinery to maintain the state of another machine?
Leading lights in origin-of-life research share their work and thoughts in a series of open-access articles about chemical evolution.
If life didn’t depend on these acts by cellular organelles and molecules, we would consider them death-defying performances in the greatest show on earth.
The “selectivity filters” in membrane channels of living cells are able to discriminate between very similar molecules or atoms using complex mechanisms.
Details of the nuclear pore complex, one of the largest and most complex protein systems in the cell, come into sharper focus as a team watches how it validates a messenger RNA.