>3mpuB (B:) observed residues (from ATOM records) aikrgtvidhipaqigfkllslfkltetdqritiglnlpsgemgrkdlikientflsedq vdqlalyapqatvnridnyevvgksrpslperidnvlvcpnsncishaepvsssfavrkr andialkckycekefshnvvlan