ViennaRNA Nucleobase and Base Pair Picture Book (BPPB)

All images by Andrea Tanzer and Ronny Lorenz published under CC-BY 4.0 licence.
Own work using MarvinSketch and Inkscape.

Classical Nucleobases

Guanine (C)
RNA DNA
Guanine
Cytosine (C)
RNA DNA
Cytosine
Adenine (A)
RNA DNA
Adenine
Uracil (U)
RNA
Uracil
Thymine (T)
DNA
Thymine

Modified Bases

Hypoxanthine (I)
RNA

Hypoxanthine

nucleobase of inosine
Pseudouracil (Ψ)
RNA

pseudouracil

nucleobase of pseudouridine
N6-methyl-adenine (m6A)
RNA DNA

N6-methyl-adenine (methyl-syn)

methyl syn conformation
N6-methyl-adenine (m6A)
RNA DNA

N6-methyl-adenine

methyl anti conformation
7-deaza-adenine (7DA)
RNA DNA

7-deaza-adenine

nucleobase of tubercidin
Purine (P)
RNA

purine

nucleobase of nebularin

Canonical Base Pairs

Guanine - Cytosine
(G•C)

RNA DNA
Guanine - Cytosine Base Pair
Adenine - Uracil
(A•U)

RNA
adenine_uracil_pair
Guanine - Uracil
(G•U)

RNA
guanine_uracil_pair

Base Pairs with Modified Nucleotides

Hypoxanthine - Cytosine
(I•U)

RNA
hypoxanthine_cytosine_pair
Hypoxanthine - Adenine
(I•A)

RNA
hypoxanthine_adenine_pair
Hypoxanthine - Uracil
(I•U)

RNA
hypoxanthine_uracil_pair
Pseudouracil - Guanine
(Ψ•G)

RNA
pseudouracil_guanine_pair
Pseudouracil - Adenine
(Ψ•A)

RNA
pseudouracil_adenine_pair
Pseudouracil - Uracil
(Ψ•U)

RNA
pseudouracil_uracil_pair_0
Pseudouracil - Uracil
(Ψ•U)

RNA
pseudouracil_uracil_pair_1
N6-methyl-adenine - Uracil
(m6A•U)

RNA
N6-methyl-adenine_uracil_pair
7-deaza-adenine - Uracil
(7DA•U)

RNA
7-deaza-adenine_uracil_pair
Purine - Uracil
(P•U)

RNA
purine_uracil_pair