>sp|P81793|TX21B_PHONI U6-ctenitoxin-Pn1a OS=Phoneutria nigriventer OX=6918 PE=3 SV=1
MWLKIQVFVLALALITLGIQAEPNSGPNNPLIQEEARACADVYKECWYPEKPCCKDRACQ
CTLGMTCKCKATLGDLFGRR