>5trrX (X:) observed residues (from ATOM records)
ttivalkypggvvmagdrrstqgnmisgrdvrkvyitddytatgiagtaavavefarlya
velehyeklegvpltfagkinrlaimvrgnlaaamqgllalpllagydihasdpqsagri
vsfdaaggwnieeegyqavgsgslfakssmkklysqvtdgdsglrvavealydaadddsa
tggpdlvrgifptaviidadgavdvpesriaelaraiiesrs