>3i2bK (K:) observed residues (from ATOM records)
rrcqaqvsrrisfsashrlyskflsdeenlklfgkcnnpnghghnykvvvtvhgeidpat
gmvmnladlkkymeeaimqpldhknldmdvpyfadvvsttenvavyiwdnlqkvlpvgvl
ykvkvyetdnnivvykge