10/20/2023 0 Comments At zero: the final secrets to![]() “Scientists have long dreamed of increasing the diversity of bases. ![]() More than four decades in the making, the studies show how dozens of these bacteriophages (or just ‘phages’), as they are known, write their genomes using a chemical base called 2-aminoadenine, Z for short, instead of adenine - the A in the As, Ts, Cs and Gs of genetics textbooks. Some viruses that infect bacteria use an alternative genetic alphabet that’s distinct from the code used by nearly all other organisms - and, now, two teams have spelt out how the system works. Credit: Maurizio De Angelis/Science Photo Library ![]() coli cell in this computer illustration - can have exotic chemistries in their DNA. Bacteriophage viruses - seen attacking an E.
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