>6curA (A:) observed residues (from ATOM records)
mteyklvvvgaggvgksaltiqliqnhfvdeydptiedsyrkqvvidgetclldildtag
qeeasamrdqymrtgegflcvfainntksfedihqyreqikrvkdsddvpmvlvgnkcdl
aartvesrqaqdlarsygipyietsaktrqgvedafytlvreirqh