>gnl|EMDB+PDB|21708.1 ref_db_acc:6WKT strand_id:A,B,C,D description:Csp3 MEQYSEACIEACIDCMKACNHCFTKCLEESVQHHLSGCIRLDRECADICALAVKAMQTDSPFMKEICALCADICEACGTECGKHDHDHCQACAKACFTCAEQCRSMAA