>3cw9A (A:) observed residues (from ATOM records)
mqtvnemlrraatrapdhcalavparglrlthaelrarveavaarlhadglrpqqrvavv
apnsadvviailalhrlgavpallnprlksaelaelikrgemtaaviavgrqvadaifqs
gsgariiflgdlvrdgepysygppiedpqrepaqpafifytsgttglpkaaiipqraaes
rvlfmstqvglrhgrhnvvlglmplyhvvgffavlvaalaldgtyvvveefrpvdalqlv
qqeqvtslfatpthldalaaaaahagsslkldslrhvtfagatmpdavletvhqhlpgek
vniygtteamnslymrqpktgtemapgffsevrivrigggvdeivangeegelivaasds
afvgylnqpqataeklqdgwyrtsdvavwtpegtvrilgrvddmiisggenihpseierv
lgtapgvtevvvigladqrwgqsvtacvvprlgetlsadaldtfcrsseladfkrpkryf
ildqlpknalnkvlrrqlvqqvs