Sequence alignment between 1v91(A) and UniProt seq P83257 (T3D1B_PIRLC):

P83257 (T3D1B_PIRLC): Delta-amaurobitoxin-Pl1b from Pireneitega luctuosa 
                 10        20        30        
         ---------+---------+---------+-------
UniProt: ACVGDGQRCASWSGPYCCDGYYCSCRSMPYCRCRNNS-
PDB seq: ACVGDGQRCASWSGPYCCDGYYCSCRSMPYCRCRNNSX
         ---------+---------+---------+--------
                 10        20        30