>1tx4A (A:) observed residues (from ATOM records)
plpnqqfgvslqhlqeknpeqepipivlretvaylqahalttegifrrsantqvvrevqq
kynmglpvdfdqynalhlpavilktflrelpeplltfdlyphvvgflnidesqrvpatlq
vlqtlpeenyqvlrfltaflvqisahsdqnkmtntnlavvfgpnllwakdaaitlkainp
intftkflldhqgelf