>3of6A (A:) observed residues (from ATOM records)
mgvsqsprykvakrgqdvalrcdpisghvslfwyqqalgqgpefltyfqneaqldksglp
sdrffaerpegsvstlkiqrtqqedsavylcasslgqayeqyfgpgtrltvtedlknvfp
pevavfepseaeishtqkatlvclatgfypdhvelswwvngkevhsgvstdpqplkeqpa
lndsryclssrlrvsatfwqnprnhfrcqvqfyglsendewtqdrakpvtqivsaeawgr