>4duhB (B:) observed residues (from ATOM records)
vlkgldavrkrpgmyigdtddgtglhhmvfevvdnaidealaghckeiivtihadnsvsv
qddgrgiptgihpeegvsaaevimtvlhaggkfgvgvsvvnalsqklelviqregkihrq
iyehgvpqaplavtgetektgtmvrfwpsletftnvtefeyeilakrlrelsflnsgvsi
rlrdkrdgkedhfh