>2b1xF (F:) observed residues (from ATOM records)
rvsdttvreitewlymeaelldagkyrewlalvtedlsyvvpirvtrereavtdvvegmt
hmdddadsmemrvlrleteyawaedppsrsrhfvtnvrvatgdsedefkvtsnlllyrtr
gdvatydvlsgertdvlrragdsflmakrvvlldqttimthnlalim