>3cd1A (A:) observed residues (from ATOM records)
kgeelftgvvpilveldgdvnghkfsvsgegegdatygkltlkfisttgklpvpwptlvt
tlgygvqcfsrypdhmkrhdffksampegyvqertisfkddgnyktraevkfegdtlvnr
ielkgidfkedgnilghkleynyncesnvyimadkqkngikanfktrhniedgsvqladh
yqqntpigdgpvllpdnhylstcsalskdpnekrdhmvllefvtaagit