Micro Organisms
A characteristic of protein synthesis in both the archaea and eukarya is

translation is inhibited by diphtheria toxin
the initiator tRNA is charged with N-formyl-methionine
proteins are synthesized from D-, rather than L-, isomers of amino acids
transcription and translation are coupled

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Micro Organisms
The unifying feature of the archaea that distinguishes them from the bacteria is

absence of a nuclear membrane temperature
presence of a cell wall containing a characteristic outer membrane
habitats which are extreme environments with regard to acidity
cytoplasmic ribosomes that are 70S

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