Sequence alignment between 2igb(A) and UniProt seq P41007 (PYRR_BACCL):

P41007 (PYRR_BACCL): Bifunctional protein PyrR from Bacillus caldolyticus
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170         
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------
UniProt: MQKAVVMDEQAIRRALTRIAHEIIERNKGIDGCVLVGIKTRGIYLARRLAERIEQIEGASVPVGELDITLYRDDLTVKTDDHEPLVKGTNVPFPVTERNVILVDDVLFTGRTVRAAMDAVMDLGRPARIQLAVLVDRGHRELPIRADFVGKNVPTSRSELIVVELSEVDGIDQVSIHEK
         ..........................................................................XXXXXXX..................................................................................................
PDB seq: MQKAVVMDEQAIRRALTRIAHEIIERNKGIDGCVLVGIKTRGIYLARRLAERIEQIEGASVPVGELDITLYRDD-------HEPLVKGTNVPFPVTERNVILVDDVLFTGRTVRAAMDAVMDLGRPARIQLAVLVDRGHRELPIRADFVGKNVPTSRSELIVVELSEVDGIDQVSIHEK
         ---------+---------+---------+---------+---------+---------+---------+----       --------+---------+---------+---------+---------+---------+---------+---------+---------+---------
                 10        20        30        40        50        60        70                  90       100       110       120       130       140       150       160       170