>3us6A (A:) observed residues (from ATOM records)
evgqmrrqwvdyiksmfmegfldgqflqlqqlqdennpefvfevvslffddserilkdls
favdqqsidfkkvdahvhqfkgssasigaqrvknscvafrnfceeqnidacrrclqqvkq
eyllvknkletllrleqqivaaggsipm