Sequence alignment between 2qbk(O) and UniProt seq P0C018 (RL18_ECOLI):

P0C018 (RL18_ECOLI): 50S ribosomal protein L18 from Escherichia coli (strain K12)
                 10        20        30        40        50        60        70        80        90       100       110       
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-------
UniProt: MDKKSARIRRATRARRKLQELGATRLVVHRTPRHIYAQVIAPNGSEVLVAASTVEKAIAEQLKYTGNKDAAAAVGKAVAERALEKGIKDVSFDRSGFQYHGRVQALADAAREAGLQF
PDB seq: -DKKSARIRRATRARRKLQELGATRLVVHRTPRHIYAQVIAPNGSEVLVAASTVEKAIAEQLKYTGNKDAAAAVGKAVAERALEKGIKDVSFDRSGFQYHGRVQALADAAREAGLQF
          --------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-------
                 10        20        30        40        50        60        70        80        90       100       110