Columbia and Harvard researchers engineer ribosome without isoleucine
Scientists from Columbia University and Harvard University have successfully created a segment of the ribosome that operates without the crucial amino acid isoleucine, thereby condensing the genetic code from 20 to 19 amino acids. This study explores the theory that primitive life forms may have utilized fewer than 20 amino acids. The genetic code, which comprises triplets of DNA bases to represent 20 amino acids, is thought to originate from the last universal ancestor of all life on Earth. Previous research primarily aimed at expanding the code beyond 20 amino acids for innovative applications. The achievement of this team illustrates that a simplified code is feasible, bolstering evolutionary theories regarding a more basic ancestral code.
Key facts
- Researchers from Columbia and Harvard engineered a ribosome portion without isoleucine.
- The genetic code uses three DNA bases to encode 20 amino acids.
- The current code likely dates back to the last common ancestor of all life.
- Most hypotheses suggest early life had partial codes with fewer than 20 amino acids.
- Previous work focused on altering the code for useful purposes like using more than 20 amino acids.
- The experiment tested whether one of the 20 amino acids could be eliminated.
- The ribosome portion engineered works without isoleucine.
- The research supports evolutionary theories about a simpler ancestral genetic code.
Entities
Institutions
- Columbia University
- Harvard University