Sequence alignment between 2pf4(F) and UniProt seq P03081 (ST_SV40):

P03081 (ST_SV40): Small t antigen from Simian virus 40
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170    
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+----
UniProt: MDKVLNREESLQLMDLLGLERSAWGNIPLMRKAYLKKCKEFHPDKGGDEEKMKKMNTLYKKMEDGVKYAHQPDFGGFWDATEVFASSLNPGVDAMYCKQWPECAKKMSANCICLLCLLRMKHENRKLYRKDPLVWVDCYCFDCFRMWFGLDLCEGTLLLWCDIIGQTTYRDLKL
         ........................................XXXXXXXX..........................XXXXXXXXXXXX........X........X....X.................................................................
PDB seq: MDKVLNREESLQLMDLLGLERSAWGNIPLMRKAYLKKCKE--------EEKMKKMNTLYKKMEDGVKYAHQPDF------------SLNPGVDAIYCKQWPECVKKMSTNCICLLCLLRMKHENRKLYRKDPLVWVDCYCFDCFRMWFGLDLCEGTLLLWCDIIGQTTYRDL--
         ---------+---------+---------+---------+        -+---------+---------+----            ---+---------+---------+---------+---------+---------+---------+---------+---------+--  
                 10        20        30        40        50        60        70                  90       100       110       120       130       140       150       160       170