>2ar7B (B:) observed residues (from ATOM records)
kllravilgppgsgkgtvcqriaqnfglqhlssghflrenikastevgemakqyieksll
vpdhvitrlmmselenrrgqhwlldgfprtlgqaealdkicevdlvislnipfetlkdrl
srrwihppsgrvynldfnpphvhgiddvtgeplvqqeddkpeavaarlrqykdvakpvie
lyksrgvlhqfsgtetnkiwpyvytlfsnkitpiqskeayl