Some archaea uses different start codons

Thread starter nemzy
Start date Jun 5, 2007

AI Thread Summary

In certain archaea, the start codon TTG is predominantly used instead of the conventional ATG, raising questions about its significance in genetic coding and evolutionary biology. The presence of various start codons among bacteria and their relatives suggests a complex evolutionary history. This variation indicates that eukaryotic DNA processes may not have originated from these groups, highlighting potential differences in genetic mechanisms between archaea, bacteria, and eukaryotes. Understanding these differences could provide insights into the evolution of genetic coding systems across different domains of life.

Jun 5, 2007

nemzy

in some archaea, it uses TTG start codon most of the time, rather than the conventional ATG.. Does anyone know what the significance of this is?

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Jun 5, 2007

jim mcnamara

Mentor

There are several different start codons used by bacteria and cousins.
All that implies (IMO) is that eucaryotic DNA "operations" probably did not derive from those groups.

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