>4zz1A (A:) observed residues (from ATOM records)
arvavlisgtgsnlqalidstrepnssaqidivisnkaavagldkaeragiptrvinhkl
yknrvefdsaidlvleefsidivclagfmrilsgpfvqkwngkmlnihpsllpsfkgsna
heqaletgvtvtgctvhfvaedvdagqiilqeavpvkrgdtvatlservklaehkifpaa
lqlvasgtvqlgengkicwv