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Phylogenetic evidence for the emergence of bacterial σ-factors by domain fusion

{sigma}-factors are dissociable subunits of RNA polymerase (RNAP), forming the basal regulatory machinery for bacterial transcription. The minimal {sigma}-

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• Phylogenetic evidence for the emergence of bacterial σ-factors by domain fusion bioRxiv (new preprints) · tier C · clear net · 2026-10-10 00:00 UTC

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