>3srsX (X:) observed residues (from ATOM records)
tlsilvahdlqrvigfenqlpwhlpndlkhvkklstghtlvmgrktfesigkplpnrrnv
vltsdtsfnvegvdvihsiediyqlpghvfifggqtlfeemidkvddmyitviegkfrgd
tffppytfedwevassvegkldekntiphtflhlirk