>1a33A (A:) observed residues (from ATOM records)
kdrrrvfldvtidgnlagrivmelyndiaprtcnnflmlctgmagtgkisgkplhykgst
fhrviknfmiqggdftkgdgtggesiyggmfddeefvmkhdepfvvsmankgpntngsqf
fitttpaphlnnihvvfgkvvsgqevvtkieylktnsknrpladvvilncgelv