Sequence alignment between 2ix2(A) and UniProt seq P57766 (PCNA1_SULSO):

P57766 (PCNA1_SULSO): DNA polymerase sliding clamp 1 from Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2) 
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240         
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------
UniProt: MFKIVYPNAKDFFSFINSITNVTDSIILNFTEDGIFSRHLTEDKVLMAIMRIPKDVLSEYSIDSPTSVKLDVSSVKKILSKASSKKATIELTETDSGLKIIIRDEKSGAKSTIYIKAEKGQVEQLTEPKVNLAVNFTTDESVLNVIAADVTLVGEEMRISTEEDKIKIEAGEEGKRYVAFLMKDKPLKELSIDTSASSSYSAEMFKDAVKGLRGFSAPTMVSFGENLPMKIDVEAVSGGHMIFWIAPRL
         ...................................................................................XX.......XX......................XXXXXXXXXXXXXX.........................................XXXX..........................................................................
PDB seq: -FKIVYPNAKDFFSFINSITNVTDSIILNFTEDGIFSRHLTEDKVLMAIMRIPKDVLSEYSIDSPTSVKLDVSSVKKILSKAS--KATIELT--DSGLKIIIRDEKSGAKSTIYIK--------------NLAVNFTTDESVLNVIAADVTLVGEEMRISTEEDKIKIEAG----RYVAFLMKDKPLKELSIDTSASSSYSAEMFKDAVKGLRGFSAPTMVSFGENLPMKIDVEAVSGGHMIFWIAPRL
          --------+---------+---------+---------+---------+---------+---------+---------+---  ----+--  -----+---------+------              ---------+---------+---------+---------+-    ----+---------+---------+---------+---------+---------+---------+---------
                 10        20        30        40        50        60        70        80        90       100       110                           140       150       160       170       180       190       200       210       220       230       240