>4fkxC (C:) observed residues (from ATOM records)
mpsertfiavkpdgvqrnlvgeiikrfenkgyklvglkllqpteeqakqhyidlaskpfy
sglvsyfssgpivgmvweglgvvkggrvllgatnpadslpgtirgdfavdvgrnvchgsd
svesakreiafwfkaeelvswtshsvkqiyera