| |
Proposed nomenclature |
Saenger |
Recent designation |
| 1. Cis Watson–Crick/Watson–Crick |
G·A cis W.C./W.C. |
VIII |
GA Imino |
| C·C cis W.C./W.C. (wobble) |
|
CC N3(+)-carbonyl, amino-N3 |
| G·U cis W.C./W.C. (wobble) |
XXVIII |
|
| U·C
cis W.C./W.C. |
XVIII |
UC 4-carbonyl-amino |
| U·U cis (wobble) W.C./W.C. |
XVI |
UU imino-carbonyl |
 |
| 2. Trans Watson–Crick/Watson–Crick |
A·U trans W.C./W.C. |
XXI |
AU Reverse Watson–Crick |
| A·A trans W.C./W.C. |
I |
AA N1-amino, symmetric |
| G·G trans W.C./W.C. |
III |
GG N1-carbonyl, symmetric |
| G·C trans W.C./W.C. |
XXII |
GC Reverse Watson–Crick |
| · trans W.C./W.C. |
XXVI |
AC Reverse Wobble |
| · trans W.C./W.C. |
XXVII |
GU Reverse Wobble |
| · trans W.C./W.C. |
XVII |
|
| · trans W.C./W.C. |
XIV, XV |
|
| · trans W.C./W.C. |
XII, XIII |
UU 4(2)-carbonyl-imino, symmetric |
|
| 3. Cis Watson–Crick/Hoogsteen |
G·G cis W.C./Hoogsteen |
VI |
GG N1-carbonyl, N7-amino |
| U·A cis W.C./Hoogsteen |
XXIII |
AU Hoogsteen |
| G·A cis W.C./Hoogsteen |
|
GA N1-N7, carbonyl-amino |
| A+·G cis W.C./Hoogsteen |
|
GA+ carbonyl-amino, N7-N1 |
|
| 4. Trans Watson–Crick/Hoogsteen |
A·A trans W.C./Hoogsteen |
V |
AA N7-amino |
| G·G trans W.C./Hoogsteen |
VII |
GG N7-imino |
| U·A trans W.C./Hoogsteen |
XXIV |
AU Reverse Hoogsteen |
| C·A trans W.C./Hoogsteen |
XXV |
AC Reverse Hoogsteen |
|
| 5. Cis Watson–Crick/Sugar-edge |
A·G cis W.C./Sugar-edge |
|
GA N3-amino (1 bond) |
| A·U cis W.C./Sugar-edge |
|
AU amino-2-carbonyl |
|
| 6. Trans Watson–Crick/Sugar-edge |
A·G trans W.C./Sugar-edge |
X |
GA N3-amino, amino-N1 |
| A·U cis W.C./Sugar-edge |
|
GC N3-amino, amino-N3 |
|
| 7. Cis Hoogsteen/Hoogsteen |
|
|
|
|
| 8. Trans Hoogsteen/Hoogsteen |
A·A trans Hoogsteen/Hoogsteen |
II |
AA N7-amino, symmetric |
|
| 10. Trans Hoogsteen/Sugar-edge |
A·G trans Hoogsteen/Sugar-edge |
XI |
GA Sheared |
| A·A trans Hoogsteen/Sugar-edge |
|
AA N3-amino |
| C·U trans Hoogsteen/Sugar-edge |
|
UC 2-carbonyl-amino (1 bond) |
|
| 12. Trans Sugar-edge/Sugar-edge |
G·G trans Sugar-edge/Sugar-edge |
IV |
GG N3-amino, symmetric |
