Sequence alignment between 6t0b(I) and UniProt seq P22289 (QCR9_YEAST):

P22289 (QCR9_YEAST): Cytochrome b-c1 complex subunit 9, mitochondrial from Saccharomyces cerevisiae (strain ATCC 204508 / S288c) 
                 10        20        30        40        50        60      
         ---------+---------+---------+---------+---------+---------+------
UniProt: MSFSSLYKTFFKRNAVFVGTIFAGAFVFQTVFDTAITSWYENHNKGKLWKDVKARIAAGDGDDDDE
PDB seq: -SFSSLYKTFFKRNAVFVGTIFAGAFVFQTVFDTAITSWYENHNKGKLWKDVKARIAA--------
          --------+---------+---------+---------+---------+--------        
                 10        20        30        40        50