>2a2sB (B:) observed residues (from ATOM records)
ppytvvyfpvrgrcaalrmlladqgqswkeevvtvetwqegslkasclygqlpkfqdgdl
tlyqsntilrhlgrtlglygkdqqeaalvdmvndgvedlrckyisliytnyeagkddyvk
alpgqlkpfetllsqnqggktfivgdqisfadynlldlllihevlapgcldafpllsayv
grlsarpklkaflaspeyvnlpingngkq