>1menB (B:) observed residues (from ATOM records)
rilvavlisgtgsnlqalidstrepnssaqidivisnkaavagldkaeragiptrvinhk
lyknrvefdsaidlvleefsidivclagfmrilsgpfvqkwngkmlnihpsllpsfkgsn
aheqaletgvtvtgctvhfvaedvdagqiilqeavpvkrgdtvatlservklaehkifpa
alqlvasgtvqlgengkicwv