>3rbcK (K:) observed residues (from ATOM records)
mvsqvrqnyhsdceaavnrmlnlelyasytyssmyaffdrddvalhnvaeffkehsheer
ehaekfmkyqnkrggrvvlqdikkperdewgntleamqaalqlektvnqalldlhklatd
kvdphlcdfleseyleeqvkdikrigdfitnlkrlglpengmgeylfdkhsvk