For the first time, scientists have captured how complex molecules change shape when exposed to UV light—an ultra-fast ...

Many biologically important molecules change shape when stimulated by UV radiation. Although this property can also be found in some drugs, it is not ...

The OSIRIS-REx mission returned to the sample to Earth in September of 2023, and these studies show that it contains amino acids, nucleobases, and minerals known as evaporites—all elements of ...

This image illustrates the chemical structures of the five main nucleobases found in DNA and RNA. The pyrimidines, thymine (DNA), uracil (RNA), and cytosine are shown on top while the purines, adenine ...

Polymers are made of monomers, and in DNA, these monomers are called nucleotides or nucleobases. The enzymes that handle DNA molecules are often called "polymerases," but the -ase suffix denotes ...

All life on Earth is made of complex organic molecules. These include amino acids that make up proteins, nucleobases in DNA and carbohydrates like sugars. Scientists doubt that the early Earth had ...