Thousands of previously undescribed protein–metabolite interactions have been mapped by analysing outbred mice.

When the skin is injured, a stem cell’s survival instincts kick in. New research reveals that a simple amino acid, serine, helps push stem cells to abandon hair growth in favor of wound healing, ...

Astronomers have discovered high amounts of the amino acid tryptophan in interstellar material throughout a nearby star-birthing region of space. Tryptophan is one of 20 amino acids responsible for ...