>3k9lA (A:) observed residues (from ATOM records)
mteyklvvvgaggvgksaltiqliqnhfvdefdptiedsyrkqvvidgetclldildtag
qeeymrtgegflcvfainntksfedihqyreqikrvkdsddvpmvlvgnkcdlaartves
rqaqdlarsygipyietsaktrqgvedafytlvreirqh