>3r3bA (A:) observed residues (from ATOM records)
tggnlpdvashypvayeqtldgtvgfvidemtperatasvevtdtlrarwglvhggayca
laemlateatvavvhekgmmavgqsnhtsffrpvkeghvraeavrihagsttwfwdvslr
ddagrlcavssmsiavrprrd