The two RNA polymerases encoded by the nuclear and the plastid compartments transcribe distinct groups of genes in tobacco plastids

The plastid genome in photosynthetic higher plants encodes subunits of an Escherichia coli‐like RNA polymerase (PEP) which initiates transcription from E.coli σ70‐type promoters. We have previously established the existence of a second nuclear‐encoded plastid RNA polymerase (NEP) in photosynthetic h...

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