Sequence alignment between 6tqn(B) and UniProt seq P0A780 (NUSB_ECOLI):

P0A780 (NUSB_ECOLI): Transcription antitermination protein NusB from Escherichia coli (strain K12)
                 10        20        30        40        50        60        70        80        90       100       110       120       130         
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------
UniProt: MKPAARRRARECAVQALYSWQLSQNDIADVEYQFLAEQDVKDVDVLYFRELLAGVATNTAYLDGLMKPYLSRLLEELGQVEKAVLRIALYELSKRSDVPYKVAINEAIELAKSFGAEDSHKFVNGVLDKAAPVIRPNKK
PDB seq: ---AARRRARECAVQALYSWQLSQNDIADVEYQFLAEQDVKDVDVLYFRELLAGVATNTAYLDGLMKPYLSRLLEELGQVEKAVLRIALYELSKRSDVPYKVAINEAIELAKSFGAEDSHKFVNGVLDKAAPVIRPN--
            ------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-------  
                 10        20        30        40        50        60        70        80        90       100       110       120       130