>5u16E (E:) observed residues (from ATOM records)
gqnidqptemtategaivqinctyqtsgfnglfwyqqhageaptflsynvldgleekgrf
ssflsrskgysylllkelqmkdsasylcavkdsnyqliwgagtkliikpdiqnpdpavyq
lrdsvclftdfdsqtnvsqsdvyitdkcvldmrsmdfksnsavawsnacanafnnsiipe
dtffp