>3cq4B (B:) observed residues (from ATOM records)
kitlsdlplreelrvdirlntnenpyppsealvadlvatvdkiateldavelrdelaayi
tkqtgvavtrdnlwaangsneilqqllqafggpgrtalgfqpsysmhpilakgthtefia
vsrgadfridmdvaleeirakqpdivfvttpnnptgdvtslddveriinvapgivivdea
yaefspspsattllekyptklvvsrtmskafdfaggrlgyfvanpafidavmlvrlpyhl
salsqaaaivalrhsadtlgtveklsvervrvaarleelgyavvpsesnfvffgdqhaaw
qafldrgvlirdvgiaghlrttigvpeendafldaaaeiilnlsaws