Sequence alignment between 4d4x(A) and UniProt seq P00138 (CYCP_ALCXX):

P00138 (CYCP_ALCXX): Cytochrome c' from Alcaligenes xylosoxydans xylosoxydans
                 10        20        30        40        50        60        70        80        90       100       110       120       
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+-------
UniProt: QFAKPEDAVKYRQSALTLMASHFGRMTPVVKGQAPYDAAQIKANVEVLKTLSALPWAAFGPGTEGGDARPEIWSDAASFKQKQQAFQDNIVKLSAAADAGDLDKLRAAFGDVGASCKACHDAYRKKK
         X.......................................................................................................................X......
PDB seq: XFAKPEDAVKYRQSALTLMASHFGRMTPVVKGQAPYDAAQIKANVEVLKTLSALPWAAFGPGTEGGDARPEIWSDAASFKQKQQAFQDNIVKLSAAADAGDLDKLRAAFGDVGASCKACHIAYRKK-
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+------ 
                 10        20        30        40        50        60        70        80        90       100       110       120