>7btnA (A:) observed residues (from ATOM records)
gfsteeraapfsleyrvflknekgqyispfhdipiyadkdvfhmvvevprwsnakmeiat
kdplnpikqdvkkgklryvanlfpykgyiwnygaipqtwedpgdndpidvceigskvcar
geiigvkvlgilamidegetdwkviainvddpdaanyndindvkrlkpgyleatvdwfrr
ykvpdgkpenefafnaefkdkdfaidiiksthdhwkalvtkktngkgiscmnttlsespf
kcdpdaaraivdalpppcesactvptdvdkwfhhq