This table contains links which will lead to display of a representative example of a conformer in an interactive KiNG display window. Below is essentially Table 1 - Characteristics of the 46 consensus clusters of RNA backbone suite conformation - from the RNA Ontology Consortium paper, "RNA backbone: Consensus all-angle conformers and modular string nomenclature" doi/10.1261/rna.657708. We may periodically update the statistics and representatives on this table.
To view and interact with the structural model for a chosen example, click the "KiNG" button in the column labeled "example". Drag with the left mouse button to rotate in 3D, and click on a point to identify it. Buttons in the righthand panel can turn on all-atom contacts (both H-bonds & vdW) for the suite, and either full structure for the local neighborhood or pseudo-backbone for a larger context. Suitable views are on the "Views" pulldown menu.
| δ,δ,γ | name | comment | example | suite | δ-1 | ε-1 | ζ-1 | α | β | γ | δ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 33p | 1a | A-form | 
ur0020 11 |
3'emmtp3' | 81 | -148 | -71 | -65 | 174 | 54 | 81 |
| 1m | -β shoulder on 1a; some intercalate |
rr0082 1940 |
3'emm-135p3' | 84 | -142 | -68 | -68 | -138 | 58 | 86 | |
| 1L | +β shoulder on 1a; some intercalate |
rr0082 1460 |
86 | -115 | -92 | -56 | 138 | 62 | 79 | ||
| &a | εζ shoulder on 1a; weak Hb O2'(-1)-O4' |
pr0037 B163 |
82 | -169 | -95 | -64 | -178 | 51 | 82 | ||
| 7a | stack switch |
ar0041 A6 |
3'e-140mtp3' | 83 | -143 | -138 | -57 | 161 | 49 | 82 | |
| 3a | bases far 7a,3a,9a all touch in ζ |
urb016 A2 |
3'etmtp3' | 85 | -144 | 173 | -71 | 164 | 46 | 85 | |
| 9a | bases far; starts or ends loops |
rr0082_2582 |
83 | -150 | 121 | -71 | 157 | 49 | 81 | ||
| 1g | GNRA1-2; U-turn |
rr0082 1864 |
3'emttp3' | 81 | -141 | -69 | 167 | 160 | 51 | 85 | |
| 7d | bases far; can span 2 helices |
rr0082 0636 |
3'emptp3' | 84 | -121 | -103 | 70 | 170 | 53 | 85 | |
| 3d | bases far; starts or ends A-helix |
rr0082 2118 |
3'e-140ptp3' | 85 | -116 | -156 | 66 | -179 | 55 | 86 | |
| 5d | P(-1) to P(+1) close; end or end+1 A-helix |
ur0020 A9 |
3'epptp3' | 80 | -158 | 63 | 68 | 143 | 50 | 83 | |
| 33t | 1e | S-motif strand2 "dent"; Hb O2'(-1)-O4'; low β |
ur0035 A2665 |
3'em-110 80tp3' | 81 | -159 | -79 | -111 | 83 | 168 | 86 |
| 1c | GNRA 4-5; ttt "crankshaft" version of 1a |
ur0020 A28 |
3'emttt3' | 80 | -163 | -69 | 153 | -166 | 179 | 84 | |
| 1f | +β shoulder on 1c; stack switch or ∼intercalate |
tr0001 A22 |
3'emt135t3' | 81 | -157 | -66 | 172 | 139 | 176 | 84 | |
| 5j | bases far; 1-bulge return |
ar0027 B17 |
3'epp110t3' | 87 | -136 | 80 | 67 | 109 | 176 | 84 | |
| 32p | 1b | leads into 2' suites; k-turn O'; syn G Hb N2-OP2 |
pr0113 D208 |
3'emmtp2' | 84 | -145 | -71 | -60 | 177 | 58 | 145 |
| 1[ | best intercalation conformation |
pr0019 B658 |
3'emm-135p2' | 83 | -140 | -71 | -63 | -138 | 54 | 144 | |
| 3b | bases far; ends A-helix |
rr0082 0904 |
3'etmtp2' | 85 | -134 | 168 | -67 | 178 | 49 | 148 | |
| 1z | UNCG 1-2; bulges |
rr0082 01771 |
3'emttp2' | 83 | -154 | -82 | -164 | 162 | 51 | 145 | |
| 5z | S-motif 1-2; Z32a dna; Hb OP2(-1)-O2' |
ur0026 A2654 |
3'epttp2' | 83 | -154 | 53 | 164 | 148 | 50 | 148 | |
| 7p | bases far |
pr0033 B8 |
3'e-140ptp2' | 84 | -123 | -140 | 68 | -160 | 54 | 146 | |
| 32t | 1t | ttt version of 1b |
pte003 B907 |
3'emttt2' | 81 | -161 | -71 | 180 | -165 | 178 | 147 |
| 5q | bases far |
pte003 B973 |
3'epp110t2' | 82 | -155 | 69 | 63 | 115 | 176 | 146 | |
| 32m | 1o | Starts 1-bulge; wide in β |
rr0082_01108 |
3'emmtm2' | 84 | -143 | -73 | -63 | -135 | -66 | 151 |
| 7r | k-turn 1-2 |
rr0082 0262 |
3'e-140ptm2' | 85 | -127 | -112 | 63 | -178 | -64 | 150 | |
| 23p | 2a | leads out of 2' suites; 1-bulge return |
rr0082 01711 |
2'emmtp3' | 145 | -100 | -71 | -72 | -167 | 53 | 84 |
| 4a | bases far |
rr0082 02485 |
2'etmtp3' | 146 | -100 | 170 | -62 | 170 | 51 | 84 | |
| 0a | cross-stacked A-helix |
rr0082 0265 |
149 | -137 | 139 | -75 | 158 | 48 | 84 | ||
| #a | i-1 to i base pair; S-motif 3-4; low ε |
rr0082 01371 |
2'etmtp3' | 148 | -168 | 146 | -71 | 151 | 42 | 85 | |
| 4g | i-1 to i base pair; non S-motif |
ur0012 A226 |
2'etttp3' | 148 | -103 | 165 | -155 | 165 | 49 | 83 | |
| 6g | sheared stack |
pr0122 R151 |
2'epttp3' | 145 | -97 | 80 | -156 | -170 | 58 | 85 | |
| 8d | some with Hb O2'(-1)-OP2(+1) |
rr0009 C1062 |
2'emptp3' | 149 | -89 | -119 | 62 | 176 | 54 | 87 | |
| 4d | tRNA 58-9; Hb O2'(-1)-OP2(+1) |
tr0001_A59 |
2'etptp3' | 150 | -110 | -172 | 80 | -162 | 61 | 89 | |
| 6d | starts A-helix |
rr0082 0116 |
2'epptp3' | 147 | -119 | 89 | 59 | 161 | 52 | 83 | |
| 23t | 2h | bases far |
rr0082 02540 |
2'emmtt3' | 148 | -99 | -70 | -64 | 177 | 176 | 87 |
| 4n | ∼stack or sheared stack |
rr0082 0767 |
149 | -85 | 100 | 81 | -112 | -178 | 83 | ||
| 0i | -β next to 6n; bases perpendicular |
rr0082 0940 |
149 | -85 | 100 | 81 | -112 | -178 | 83 | ||
| 6n | UNCG 3-4; Z23 dna; syn curled to base triple |
rr0082 01773 |
2'epptt3' | 150 | -92 | 85 | 64 | -169 | 177 | 86 | |
| 6j | -β next to 6n; bases far |
pte003 B975 |
142 | -116 | 66 | 72 | 122 | -178 | 84 | ||
| 22p | 2[ | UNCG 2-3; near B dna; k-turn 3-4 |
rr0082 0264 |
2'emm-135p2' | 146 | -101 | -69 | -68 | -150 | 54 | 148 |
| 4b | Cross-stacked A-helix end |
rr0082 0247 |
2'etmtp2' | 145 | -115 | 163 | -66 | 172 | 46 | 146 | |
| 0b | varied |
rr0082 0453 |
2'epmtp2' | 148 | -112 | 112 | -85 | 165 | 57 | 146 | |
| 4p | often starts 1-bulge, Hb O2'(-1)-N7(+1) |
rr0096 A873 |
2'etptp2' | 150 | -100 | -146 | 72 | -152 | 57 | 148 | |
| 6p | k-turn 2-3 |
rr0082 01315 |
2'epptp2' | 146 | -102 | 90 | 68 | 173 | 56 | 148 | |
| 22t | 4s | S-motif 2-3; low β |
ur0026 A2655 |
150 | -112 | 170 | -82 | 84 | 176 | 148 | |
| 22m | 2o | bases perpendicular, something between |
pr0033 5 |
2'emmtm2' | 147 | -104 | -64 | -73 | -165 | -66 | 150 |