Sequence alignment between 4n4c(A) and UniProt seq P00669 (RNS_BOVIN):

P00669 (RNS_BOVIN): Seminal ribonuclease from Bos taurus
                 10        20        30        40        50        60        70        80        90       100       110       120       130       140       150
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+
UniProt: MALKSLVVLPLLVLVLLLVRVQPSLGKESAAAKFERQHMDSGNSPSSSSNYCNLMMCCRKMTQGKCKPVNTFVHESLADVKAVCSQKKVTCKNGQTNCYQSKSTMRITDCRETGSSKYPNCAYKTTQVEKHIIVACGGKPSVPVHFDASV
         .........................................XX.XX..........XX............................................................................................
PDB seq: --------------------------KESAAAKFERQHMDSSTSAASSSNYCNLMMXXRKMTQGKCKPVNTFVHESLADVKAVCSQKKVTCKNGQTNCYQSKSTMRITDCRETGSSKYPNCAYKTTQVEKHIIVACGGKPSVPVHFDASV
                                   ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+----
                                           10        20        30        40        50        60        70        80        90       100       110       120