Sequence alignment between 1fs1(B) and UniProt seq P63208 (SKP1_HUMAN):

P63208 (SKP1_HUMAN): S-phase kinase-associated protein 1 from Homo sapiens
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160   
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---
UniProt: MPSIKLQSSDGEIFEVDVEIAKQSVTIKTMLEDLGMDDEGDDDPVPLPNVNAAILKKVIQWCTHHKDDPPPPEDDENKEKRTDDIPVWDQEFLKVDQGTLFELILAANYLDIKGLLDVTCKTVANMIKGKTPEEIRKTFNIKNDFTEEEEAQVRKENQWCEEK
         .....................................XXXXXX..........................XXXXXXXXXXXXXXXXX.............................................................................
PDB seq: -PSIKLQSSDGEIFEVDVEIAKQSVTIKTMLEDLGMD------PVPLPNVNAAILKKVIQWCTHHKDDP-----------------VWDQEFLKVDQGTLFELILAANYLDIKGLLDVTCKTVANMIKGKTPEEIRKTFN-----------------------
          --------+---------+---------+-------      ------+---------+---------                 ---+---------+---------+---------+---------+---------+                       
                 10        20        30                  50        60                            90       100       110       120       130       140