Anticodon and T stem-loop-stems

A message from ~4.2 billion years ago

Sequence logos for 46 Pyrococcus furiosus tRNAs.

The anticodon stem-loop-stem and the T stem-loop-stem are homologs (genetically related).

The anticodon loop evolved in tRNA for coding.

The T loop evolved to contact the D loop at the elbow.

Chemical Evolution of Life on Earth

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