>4n3dA (A:) observed residues (from ATOM records)
kgeelftgvvpilveldgdvnghkfsvsgegegdatygkltlkficttgklpvpwptlvt
tlgygvqcfsrypdhmkqhdffksampegyvqertiffkddgnyktraevkfegdtlvnr
ielkgidfkedgnilghkleynynshnvyimadkqkngiqvnfkirhniedgsvqladhy
qqntpigdgpvllpdnhylstqsalskdpnekrdhmvllefvtaagit