>1a69B (B:) observed residues (from ATOM records)
atphinaemgdfadvvlmpgdplrakyiaetfledarevnnvrgmlgftgtykgrkisvm
ghgmgipscsiytkelitdfgvkkiirvgscgavlphvklrdvvigmgactdskvnrirf
kdhdfaaiadfdmvrnavdaakalgidarvgnlfsadlfyspdgemfdvmekygilgvem
eaagiygvaaefgakaltictvsdhirtheqttaaerqttfndmikialesvllgdk