Sequence alignment between 3pip(O) and UniProt seq Q9RY64 (RL21_DEIRA):

Q9RY64 (RL21_DEIRA): Large ribosomal subunit protein bL21 from Deinococcus radiodurans (strain ATCC 13939 / DSM 20539 / JCM 16871 / CCUG 27074 / LMG 4051 / NBRC 15346 / NCIMB 9279 / VKM B-1422 / R1)
                 10        20        30        40        50        60        70        80        90       100
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
UniProt: MFAIIQTGGKQYRVSEGDVIRVESLQGEAGDKVELKALFVGGEQTVFGEDAGKYTVQAEVVEHGRGKKIYIRKYKSGVQYRRRTGHRQNFTAIKILGIQG
PDB seq: ----IQTGGKQYRVSEGDVIRVESLQGEAGDKVELKALFVGGEQTVFGEDAGKYTVQAEVVEHGRGKKIYIRKYKSGVQYRRRTGHRQNFTAIKILGI--
             -----+---------+---------+---------+---------+---------+---------+---------+---------+--------  
                 10        20        30        40        50        60        70        80        90