>2nufB (B:) observed residues (from ATOM records)
kmleqlekklgytfkdksllekalthvsyskkehyetleflgdalvnffivdllvqyspn
kregflsplkayliseeffnllaqklelhkfirikrgkinetiigdvfealwaavyidsg
rdanftrelfyklfkedilsaikegrvkkdyktilqeitqkrwkerpeyrlisvegphhk
kkfiveakikeyrtlgegkskkeaeqraaeelikllees