>4i2fA (A:) observed residues (from ATOM records)
kisqyacqrrttlnnynqlftdaldilaendelrenegsclafmrassvlkslpfpitsm
kdtegipclgdkvksiiegiiedgesseakavlnderyksfklftsvfgvglktaekwfr
mgfrtlskiqsdkslrftqmqkagflyyedlvscvnrpeaeavsmlvkeavvtflpdalv
tmtggfrrgkmtghdvdflitspeatedeeqqllhkvtdfwkqqglllycdilestfekf
kqpsrkvdaldhfqkcflilkldhgrvhsekegkgwkairvdlvmcpydrrafallgwtg
srqferdlrryatherkmmldnhalydrtkrvfleaeseeeifahlgldyiepwerna