>3tnnB (B:) observed residues (from ATOM records) altqpasvsgspgqsitisctgtssdvgsynfvswyqqhpgkapklmiyevserpsgisn rfsgsksgntasltisglqaedeadyycssyagsttfrvfgggtkltvrgqpkaapsvtl fppsseelqankatlvclisdfypgavtvawkadsspvkagvetttpskqsnnkyaassy lsltpeqwkshrsyscqvthegstvektvapt