>1z91A (A:) SEQRES residues
menkfdhmklenqlsfllyassremtkqykplldklnitypqylallllwehetltvkkm
geqlyldsgtltpmlkrmeqqglitrkrseedersvlisltedgallkekavdipgtilg
lskqsgedlkqlksalytlletlhqkn