Sequence alignment between 1s1h(J) and UniProt seq P38701 (RS20_YEAST):

P38701 (RS20_YEAST): 40S ribosomal protein S20 from Saccharomyces cerevisiae (strain ATCC 204508 / S288c)
                 10        20        30        40        50        60        70        80        90       100       110       120 
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-
UniProt: MSDFQKEKVEEQEQQQQQIIKIRITLTSTKVKQLENVSSNIVKNAEQHNLVKKGPVRLPTKVLKISTRKTPNGEGSKTWETYEMRIHKRYIDLEAPVQIVKRITQITIEPGVDVEVVVASN
PDB seq: --------------------KIRITLTSTKVKQLENVSSNIVKNAEQHNLVKKGPVRLPTKVLKISTRKTPNGEGSKTWETYEMRIHKRYIDLEAPVQIVKRITQITIEPGVDVEVV----
                             ---------+---------+---------+---------+---------+---------+---------+---------+---------+-------    
                                     30        40        50        60        70        80        90       100       110