Sequence alignment between 1ytc(A) and UniProt seq P00045 (CYC7_YEAST):

P00045 (CYC7_YEAST): Cytochrome c isoform 2 from Saccharomyces cerevisiae (strain ATCC 204508 / S288c) 
                 10        20        30        40        50        60        70        80        90       100       110   
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---
UniProt: MAKESTGFKPGSAKKGATLFKTRCQQCHTIEEGGPNKVGPNLHGIFGRHSGQVKGYSYTDANINKNVKWDEDSMSEYLTNPKKYIPGTKMAFAGLKKEKDRNDLITYMTKAAK
         .............................................................X...................X...............................
PDB seq: -AKESTGFKPGSAKKGATLFKTRCQQCHTIEEGGPNKVGPNLHGIFGRHSGQVKGYSYTDAIINKNVKWDEDSMSEYLTNPXKYIPGTKMAFAGLKKEKDRNDLITYMTKAAK
          ------------------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---
                           10        20        30        40        50        60        70        80        90       100