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| PR:A5I310 | transcription antitermination protein NusB (Clostridium botulinum A str. Hall) | | |  | | |
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| PR:P0A780 | transcription antitermination protein NusB (Escherichia coli K-12) | | |  | | |
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| PR:Q8ZRD3 | transcription antitermination protein NusB (Salmonella enterica subsp. enterica serovar Typhimurium str. LT2) | | |  | | |
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| PR:Q2FY45 | transcription antitermination protein NusB (Staphylococcus aureus subsp. aureus NCTC 8325) | | |  | | |