>5k3sA (A:) observed residues (from ATOM records)
tfisrfapdqprkgadilvealerqgvetvfaypggasmeihqaltrsssirnvlprheq
ggvfaaegyarssgkpgiciatsgpgatnlvsgladalldsvplvaitgqvprrmigtda
fqetpivevtrsitkhnylvmdvedipriieeafflatsgrpgpvlvdvpkdiqqqlaip
nweqamrlpgymsrmpkppedshleqivrliseskkpvlyvgggclnssdelgrfveltg
ipvastlmglgsypcddelslhmlgmhgtvyanyavehsdlllafgvrfddrvtgkleaf
asrakivhididsaeigknktphvsvcgdvklalqgmnkvlenraeelkldfgvwrneln
vqkqkfplsfktfgeaippqyaikvldeltdgkaiistgvgqhqmwaaqfynykkprqwl
ssgglgamgfglpaaigasvanpdaivvdidgdgsfimnvqelatirvenlpvkvlllnn
qhlgmvmqwedrfykanrahtflgdpaqedeifpnmllfaaacgipaarvtkkadlreai
qtmldtpgpylldvicphqehvlpmipsggtfndvitegdgrl