>3k9lB (B:) observed residues (from ATOM records)
mteyklvvvgaggvgksaltiqliqnhfvdefdptiedsyrkqvvidgetclldildtar
dqymrtgegflcvfainntksfedihqyreqikrvkdsddvpmvlvgnkcdlaartvesr
qaqdlarsygipyietsaktrqgvedafytlvreirqh