In a new peer reviewed analysis, scientists quantify amino acids before and after our “last universal common ancestor.” The ...

How can just four nitrogenous bases--adenine, cytosine, guanine, and uracil--possibly code for all 20 amino acids? Thus, early researchers quickly determined that the smallest combination of As ...

Some missense mutations are known to cause disease. But what about the thousands of other missense mutations that have ...

Wehbi is the first author of a study published in the journal PNAS suggesting the order with which amino acids – the code's building blocks – were recruited is at odds with what is widely ...

A new study is challenging long-held beliefs about the origins of life and the building blocks that led to the first genes.

A new study has identified one of the reasons why cancer frequently spreads from elsewhere in the body to the lungs: an amino ...