>3pu1D (D:) observed residues (from ATOM records)
svtvkriidntvivpklpanedpveypadyfrkskeiplyinttkslsdlrgyvyqglks
gnvsiihvnsylygalkdirgkldkdwssfginigkagdtigifdlvslkaldgvlpdgv
sdasrtsaddkwlplyllglyrvgrtqmpeyrkklmdgltnqckmineqfeplvpegrdi
fdvwgndsnytkivaavdmffhmfkkhecasfrygtivsrfkdcaalatfghlckitgms
tedvttwilnrevademvqmmlpgqeidkadsympylidfglsskspyssvknpafhfwg
qltalllrstrarnarqpddieytslttagllyayavgssadlaqqfcvgdnkytpdltt
nappqgrdvvewlgwfedqnrkptpdmmqyakravmslqglrektigkyaksefdk