RpoB is involved in translating DNA into RNA. Both, like the genes for ribosomal RNA, are old and ubiquitous.
ECONOMIST: A new domain of life
2.
Ribosomes are a key target for antibiotics, as antibiotics are able to attack the ribosomal activity of harmful bacteria while leaving human ribosomes untouched.
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3.
The process which the viruses employ is known as ribosomal frameshifting.
BBC: NEWS | Health | How HIV can sabotage human cells