One example is tryptophan, the amino acid that is typically considered the last to be added to the genetic code.

There are two amino acids that are primarily responsible for the UV absorbance of proteins: tyrosine and tryptophan. Both have a molar absorption coefficient at a wavelength of 280 nm, but the peak ...

The best way to get a serotonin boost is to exercise regularly, eat a healthy diet, and spend time outside. Certain supplements may also help, though they can interact with other medications, and more ...

Physics articles from across Nature Portfolio Atom RSS Feed Physics is the search for and application of rules that can help us understand and predict the world around us. Central to physics are ...