Despite awe-inspiring diversity, nearly every lifeform—from bacteria to blue whales—shares the same genetic code. How and when this code came about has been the subject of much scientific controversy.

The genetic code is redundant, so that several codons represent the same single amino acid, but there are no ambiguities. There are no examples of a single codon within any genome that represents more ...

The genetic code of living organisms has been expanded to allow the site-specific incorporation of unnatural amino acids into proteins in response to the amber stop codon UAG. Numerous amino acids ...

Amino acids can be included in multivitamins, proteins, and food supplements, and are made in tablets, fluids, and powders. However, as aspartic acid is not considered an essential amino acid ...

All life on Earth relies on a standard set of 20 amino acids to build the proteins that carry out life's essential actions. A new study looks at whether life could evolve on Earth or in space with ...

Cholera bacteria use specific D-amino acids to escape unfavorable niches and form complex ecological systems. This is shown by a study led by a research group at Umeå University, Sweden. The ...

The roles of D-amino acids, whether they are free D-amino acids or in peptides and proteins, more and more are going to be discovered. This research is going to expand greatly.

Led by Peter G. Schultz of the Scripps Research Institute in La Jolla, Calif., the team created yeast cells that add one of five unnatural amino acids to their natural 20-piece construction set.

Genetic Code Supports Targeted Insertion of Two Amino Acids by One Codon Science, 323 (5911), 259-261 DOI: 10.1126/science.1164748 Subscribe to the feed Related Topics ...