Choose a DNA fiber A-DNA (generic) B-DNA (generic) C-DNA (generic) A-DNA (generic alternate) B-DNA (generic alternate) B-DNA (generic alternate) (BI-type nucleotides) C-DNA (generic alternate) (BII-type nucleotides) C-DNA (generic alternate) (left-handed) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ A-DNA poly d(ABr5U) : poly d(ABr5U) A-DNA poly d(A1T2C3G4G5A6A7T8G9G10T11) : poly d(A... B-DNA poly d(CG) : poly d(CG) B-DNA poly d(C1C2C3C4C5) : poly d(G6G7G8G9G10) B-DNA poly d(A) : poly d(T) (Ca salt) B-DNA poly d(A) : poly d(T) (Na salt) B-DNA beta poly d(A) : poly d(U) B'-DNA poly d(AATT) : poly d(AATT) B'-DNA alpha poly d(A) : poly d(T) (H-DNA) B'-DNA beta1 poly d(A) : poly d(T) B'-DNA beta1 poly d(AI) : poly d(CT) B'-DNA beta2 poly d(A) : poly d(T) (H-DNA beta) B'-DNA beta2 poly d(A) : poly d(U) B'-DNA beta2 poly d(AI) : poly d(CT) B*-DNA poly d(A) : poly d(T) C-DNA poly d(GGT) : poly d(ACC) C-DNA poly d(G1G2T3) : poly d(A4C5C6) C-DNA poly d(AG) : poly d(CT) C-DNA poly d(A1G2) : poly d(C3T4) D-DNA poly d(AAT) : poly d(ATT) D-DNA poly d(CI) : poly d(CI) D-DNA poly d(A1T2A3T4A5T6) : poly d(A1T2A3T4A5T6) D_A-DNA poly d(AT) : poly d(AT) (right-handed) D_B-DNA poly d(AT) : poly d(AT) L-DNA poly d(GC) : poly d(GC) S-DNA poly d(CG) : poly d(CG) (C_BG_A, right-hand... S-DNA poly d(GC) : poly d(GC) (C_AG_B, right-hand... Z-DNA poly d(GC) : poly d(GC) Z-DNA poly d(As4T) : poly d(As4T) DNA poly d(C) : poly d(I) : poly d(C) DNA poly d(T) : poly d(A) : poly d(T) DNA-RNA hybrid poly (A) : poly d(T) DNA-RNA hybrid poly d(G) : poly (C) DNA-RNA hybrid poly d(I) : poly (C) DNA-RNA hybrid poly d(A) : poly (U) A-RNA poly (A) : poly (U) A-RNA 11-fold poly (X) : poly (X) A-RNA poly (s2U) : poly (s2U) (symmetric) A-RNA poly (s2U) : poly (s2U) (asymmetric) A'-RNA poly (I) : poly (C) RNA 10-fold poly (X) : poly (X) RNA poly (U) : poly (A) : poly(U) (11-fold) RNA poly (U) : poly (A) : poly(U) (12-fold) RNA poly (I) : poly (A) : poly(I) RNA poly (I) : poly (I) : poly(I) : poly(I) RNA poly (C) or poly (mC) or poly (eC) RNA poly (U) : poly d(A) : poly(U) [Help]