Sequence alignment between 5ckf(A) and UniProt seq P0AE70 (MAZF_ECOLI):

P0AE70 (MAZF_ECOLI): Endoribonuclease toxin MazF from Escherichia coli (strain K12) 
                 10        20        30        40        50        60        70        80        90       100       110 
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-
UniProt: MVSRYVPDMGDLIWVDFDPTKGSEQAGHRPAVVLSPFMYNNKTGMCLCVPCTTQSKGYPFEVVLSGQERDGVALADQVKSIAWRARGATKKGTVAPEELQLIKAKINVLIG
         .................XXXXXXX.......................................................................................
PDB seq: -VSRYVPDMGDLIWVDF-------QAGHRPAVVLSPFMYNNKTGMCLCVPCTTQSKGYPFEVVLSGQERDGVALADQVKSIAWRARGATKKGTVAPEELQLIKAKINVLIG
          --------+-------       -----+---------+---------+---------+---------+---------+---------+---------+---------+-
                 10                  30        40        50        60        70        80        90       100       110