Sequence alignment between 1v90(A) and UniProt seq P83256 (T3D1A_PIRLC):

P83256 (T3D1A_PIRLC): Delta-amaurobitoxin-Pl1a from Pireneitega luctuosa 
                 10        20        30        
         ---------+---------+---------+-------
UniProt: GCLGEGEKCADWSGPSCCDGFYCSCRSMPYCRCRNNS-
PDB seq: GCLGEGEKCADWSGPSCCDGFYCSCRSMPYCRCRNNSX
         ---------+---------+---------+--------
                 10        20        30