>2aa3B (B:) observed residues (from ATOM records)
tpkpkivlvgsgmiggvmatlivqknlgdvvmfdvvknmpqgkaldtshsnvmaysnckv
tgsnsyddlkgadvvivtagftkapgksdkewnrddllplnnkimieigghiknlcpnaf
iivvtnpvdvmvqllfehsgvpknkiiglggvldtsrlkyyisqklnvcprdvnalivga
hgnkmvllkryitvggiplqefinnkkitdeevegifdrtvntaleivnllaspyvapaa
aiiemaesylkdikkvlvcstllegqyghsnifggtplviggtgveqvielqlnaeektk
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