Table I. Characterization of the three transcriptional activities.
| PEP | NEP-1 | NEP-2 | |
|---|---|---|---|
| Recognition of rbcL | + | (+)a | – |
| Recognition of rrn P2 | + | – | – |
| Recognition of PC | – | (?) | + |
| Recognition of T7 promoter | – | + | + |
| Inhibition by Tagetin | + | – | – |
| Presence of 110 kDa phage-like RNA polymerase (ALPA and Western) | – | + | – |
| Inhibition of transcription by mNEP-1 antibodies | – | + | – |
| Sensitivity of transcription to M2 and M3 | + | + | – |
| Sensitivity of transcription to M1 | – | + | + |
aLow transcription of rbcL probably results from overlapping PEP activity.