Sequence alignment between 1spp(A) and UniProt seq P35495 (PSP1_PIG):

P35495 (PSP1_PIG): Major seminal plasma glycoprotein PSP-I from Sus scrofa
                 10        20        30        40        50        60        70        80        90       100       110       120       130   
         ---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---------+---
UniProt: MKLGSAIPWALLFSTATLISTGWGLDYHACGGRLTDDYGTIFTYKGPKTECVWTLQVDPKYKLLVSIPTLNLTCGKEYVEILEGAPGSKSLGKFCEGLSILNRGSSGMTVKYKRDSGHPASPYEIIFLRDSQG
         ................................................................................X....................................................
PDB seq: ------------------------LDYHACGGRLTDDYGTIFTYKGPKTECVWTLQVDPKYKLLVSIPTLNLTCGKEYVEVLEGAPGSKSLGKFCEGLSILNRGSSGMTVKYKRDSGHPASPYEIIFLRDSQG
                                 ------+---------+---------+---------+---------+---------+---------+---------+--------+---------+---------+---
                                      10        20        30        40        50        60        70        80       90       100       110