>2f6sB (B:) observed residues (from ATOM records)
ghmhldrqslekakhliqsglidtievgtikglqeihrflfeglyefagkirdkniakgn
frfanclyldlilpriesmpqnnfnqivekyvemniahpflegngratriwldlllkkel
kkivlwdridkaaylsamerspvndleiktllkkhlssntndpltlikgitqsyyyeglg