EXPDTA ELECTRON MICROSCOPY SEQRES 1 W 70 ASP ASP VAL THR ALA ALA GLY GLN ALA GLU ALA GLY LEU SEQRES 2 W 70 LYS GLN GLN ALA LEU PRO TYR SER ARG ARG ASN HIS LYS SEQRES 3 W 70 GLY GLY VAL THR PHE VAL ILE GLN GLY ALA LEU ASP ASP SEQRES 4 W 70 VAL GLU ILE LEU ARG ALA ARG GLN PHE VAL ASP SER TYR SEQRES 5 W 70 TYR ARG THR TRP GLY GLY ARG TYR VAL GLN PHE ALA ILE SEQRES 6 W 70 GLU LEU LYS ASP ASP