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Certain mail cars: Abbr.
Answer for the clue "Certain mail cars: Abbr. ", 4 letters:
rpos
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Wikipedia
Word definitions in Wikipedia
The gene rpoS ( R NA po lymerase, sigma S ) encodes the sigma factor sigma-38 (σ38, or RpoS), a 37.8 kD protein in Escherichia coli . Sigma factors are proteins that regulate transcription in bacteria . Sigma factors can be activated in response to different ...