>2b51A (A:) observed residues (from ATOM records)
npspdhyavwgkaimaennrrvgpehmfrtairaqqqlqgladkwtpdakvyccgsmvty
gqmergsdldlacmfddpypshevqakrtdklrtvikryvphylrnnllglteartpvvk
lrfandekvararytplseeedrkartalldvrnqcvgdndveyiaekmgrdnvegirvd
rttygcriaiqctskeqmieaigffpdgkimtrgmredytrdvldvrfvpemfmyrwdis
fvgygvknsylirhylhngpvaarhtamavkawgkatnvgagsgamltsyavtvmfiyyl
lvtrqvlwvdpwslphpahlprypdfsplydcdptelgrllhgffifyahhfdyerevvs
lnrnrrsyrsdigwnfpqnkkgtfsynfciedpyedvgtgglnlvrhlhpakfqlvkqef
lraaqcmerflptnapeksilgvk