A.-C-N-C-S- B.-C-N-N-C- C.-C-O-C-N- D.-C-N-C-C- E.-C-C-C-N-
A.β轉(zhuǎn)角 B.平行的β折疊 C.α螺旋 D.γ螺旋 E.反平行β折疊
A.D-D-A-E-E-F-C-C-V-T-T-L-E-S-L-K-I-Y B.Y-L-V-L-W-I-Y-I-L-V-F-I-L-V-I-F-Y-M-W C.D-E-V-H-I-R-K-L-SW-P-Y-C-D-H-S-N-M D.D-E-D-S-T-H-N-R-K-W-V-I-L-F-Y-V-F-F-A E.D-V-E-M-K-I-K-I-R-V-R-V-E-A-S-F-D-Y-T-L