Structural Classification Of all alpha Proteins all beta alpha/beta alpha beta 7 CLASSES multi-domain ( a, b, a/b, a+b.) membrane 800 FOLDS small domain structures coiled-coil 1.294 SUPERFAMILIES low-resolution possible evolutionary relationship peptide 2. 327 FAMILIES designed strong sequence homology 54.745 DOMAINSStructural Classification Of Proteins 7 CLASSES (a,b,a/b,a+b…) 800 FOLDS domain structures 1,294 SUPERFAMILIES possible evolutionary relationship 2,327 FAMILIES strong sequence homology 54,745 DOMAINS all alpha all beta alpha/beta alpha + beta multi-domain membrane small coiled-coil low-resolution peptide designed