>4l9sA (A:) observed residues (from ATOM records)
mteyklvvvgacgvgksaltiqliqnhfvdeydptiedsyrkqvvidgetclldildtag
rdqymrtgegflcvfainntksfedihqyreqikrvkdsddvpmvlvgnkcdlaartves
rqaqdlarsygipyietsaktrqgvedafytlvreirqh