#IFEStandardized nameMoleculeOrganismSourceRfamTitleMethodRes. ÅDate
17YGA|1|N (rep)Group I catalytic intronRNA (393-MER), RNA (5'-R(*CP*CP*CP*UP*CP*U)-3'), RNA (5'-R(*UP*CP*GP*(SSU)P*AP*AP*CP*C)-3')TetrahymenaEukaryaRF00028Cryo-EM structure of Tetrahymena ribozyme conformation 2 undergoing the second-step self-splicingElectron microscopy2.352023-03-29
27XD6|1|NGroup I catalytic intronThe Tet-S2 state with a pseudoknotted 4-way junction molecule of co-transcriptional folded wild-type Tetrahymena group I intron with 30nt 3'/5'-exon (5'-exon), The Tet-S2 state with a pseudoknotted 4-way junction molecule of co-transcriptional folded wild-type Tetrahymena group I intron with 30nt 3'/5'-exon (intron and 3'-exon)Tetrahymena thermophilaEukaryaRF00028The Tet-S2 state with a pseudoknotted 4-way junction of wild-type Tetrahymena group I intron with 30nt 3'/5'-exonElectron microscopy2.842023-04-05
37YGB|1|NGroup I catalytic intronRNA (393-MER), RNA (5'-R(*CP*CP*CP*UP*CP*UP*UP*AP*AP*CP*C)-3'), RNA (5'-R(*UP*CP*G)-3')TetrahymenaEukaryaRF00028Cryo-EM structure of Tetrahymena ribozyme conformation 3 undergoing the second-step self-splicingElectron microscopy2.622023-03-29
48I7N|1|NThe Tet-S1 state molecule of co-transcriptional folded G264A mutated Tetrahymena group I intron with 6nt 3'/5'-exon and 2-aminopurine nucleosideTetrahymena thermophilaThe Tet-S1 state of G264A mutated Tetrahymena group I intron with 6nt 3'/5'-exon and 2-aminopurine nucleosideElectron microscopy2.982023-03-29
57YGC|1|NGroup I catalytic intronRNA (393-MER), RNA (5'-R(*CP*CP*CP*UP*CP*UP*UP*AP*AP*CP*C)-3'), RNA (5'-R(*UP*CP*G)-3')TetrahymenaEukaryaRF00028Cryo-EM structure of Tetrahymena ribozyme conformation 4 undergoing the second-step self-splicingElectron microscopy2.652023-03-29
67XD5|1|NGroup I catalytic intronThe Tet-S2 state molecule of co-transcriptional folded wild-type Tetrahymena group I intron with 30nt 3'/5'-exon (5'-exon), The Tet-S2 state molecule of co-transcriptional folded wild-type Tetrahymena group I intron with 30nt 3'/5'-exon (intron and 3'-exon)Tetrahymena thermophilaEukaryaRF00028The Tet-S2 state of wild-type Tetrahymena group I intron with 30nt 3'/5'-exonElectron microscopy2.842023-04-05
77YG9|1|NGroup I catalytic intronRNA (391-MER), RNA (5'-R(*CP*CP*CP*UP*CP*U)-3'), RNA (5'-R(*UP*CP*GP*(SSU)P*AP*AP*C)-3')TetrahymenaEukaryaRF00028Cryo-EM structure of Tetrahymena ribozyme conformation 1 undergoing the second-step self-splicingElectron microscopy2.682023-03-29
87XD7|1|NGroup I catalytic intronThe pre-Tet-C state molecule of co-transcriptional folded wild-type Tetrahymena group I intron with 30nt 3'/5'-exonTetrahymena thermophilaEukaryaRF00028The pre-Tet-C state of wild-type Tetrahymena group I intron with 30nt 3'/5'-exonElectron microscopy3.022023-03-29
97EZ2|1|NGroup I catalytic intronHolo L-16 ScaI Tetrahymena ribozyme, Holo L-16 ScaI Tetrahymena ribozyme S1, Holo L-16 ScaI Tetrahymena ribozyme S2Tetrahymena thermophilaEukaryaRF00028Holo L-16 ScaI Tetrahymena ribozymeElectron microscopy3.052021-08-25
107XSN|1|NGroup I catalytic intronRNA (387-MER)Tetrahymena thermophilaEukaryaRF00028Native Tetrahymena ribozyme conformationElectron microscopy3.012022-08-03
117YG8|1|NGroup I catalytic intronRNA (387-MER), RNA (5'-R(*CP*CP*CP*UP*C)-3'), RNA (5'-R(*UP*CP*G)-3')TetrahymenaEukaryaRF00028Cryo-EM structure of Tetrahymena ribozyme conformation 5 undergoing the second-step self-splicingElectron microscopy2.972023-03-29
127EZ0|1|NGroup I catalytic intronApo L-21 ScaI Tetrahymena ribozymeTetrahymena thermophilaEukaryaRF00028Apo L-21 ScaI Tetrahymena ribozymeElectron microscopy3.142021-08-25
137R6L|1|AGroup I catalytic intronGroup I intron, 3 prime fragment plus 3 prime exon, Group I intron, 5 prime fragmentTetrahymena thermophilaEukaryaRF000285 prime exon-free pre-2S intermediate of the Tetrahymena group I intron, symmetry-expanded monomer from a synthetic dimeric constructElectron microscopy2.852022-05-04
148HD7|1|NThe intermediate pre-Tet-S1 state molecule of co-transcriptional folded G264A mutant Tetrahymena group I intron with 6nt 3'/5'-exon and 2-aminopurine nucleosideTetrahymena thermophilaThe intermediate pre-Tet-S1 state of G264A mutated Tetrahymena group I intron with 6nt 3'/5'-exon and 2-aminopurine nucleosideElectron microscopy3.522023-03-29
158HD6|1|NThe relaxed pre-Tet-S1 state molecule of co-transcriptional folded G264A mutant Tetrahymena group I intron with 6nt 3'/5'-exon and 2-aminopurine nucleosideTetrahymena thermophilaThe relaxed pre-Tet-S1 state of G264A mutated Tetrahymena group I intron with 6nt 3'/5'-exon and 2-aminopurine nucleosideElectron microscopy3.732023-03-29
167YGD|1|NGroup I catalytic intronRNA (384-MER), RNA (5'-R(*CP*C)-3'), RNA (5'-R(*UP*CP*G)-3')TetrahymenaEukaryaRF00028Cryo-EM structure of Tetrahymena ribozyme conformation 6 undergoing the second-step self-splicingElectron microscopy3.412023-03-29
177XD4|1|NGroup I catalytic intronCo-transcriptional folded wild-type Tetrahymena group I intron with 6nt 3'/5'-exonTetrahymena thermophilaEukaryaRF00028The intermediate pre-Tet-S1 state of wild-type Tetrahymena group I intron with 6nt 3'/5'-exonElectron microscopy3.892023-03-29
187XD3|1|NGroup I catalytic intronThe relaxed pre-Tet-S1 state molecule of co-transcriptional folded wild-type Tetrahymena group I intron with 6nt 3'/5'-exonTetrahymena thermophilaEukaryaRF00028The relaxed pre-Tet-S1 state of wild-type Tetrahymena group I intron with 6nt 3'/5'-exonElectron microscopy4.052023-03-29
197XSK|1|NGroup I catalytic intronRNA (388-MER)Tetrahymena thermophilaEukaryaRF00028Misfolded Tetrahymena ribozyme conformation 1Electron microscopy3.532022-08-03
207R6M|1|AGroup I catalytic intronGroup I intron, Ligated exon mimic of the Group I intronTetrahymena thermophilaEukaryaRF00028Post-2S intermediate of the Tetrahymena group I intron, symmetry-expanded monomer from a synthetic dimeric constructElectron microscopy3.682022-05-04
217UVT|1|AGroup I catalytic intronRNA (386-MER)Tetrahymena thermophilaEukaryaRF00028Kinetically trapped misfolded state of the Tetrahymena ribozymeElectron microscopy3.92022-08-31
227XSL|1|NGroup I catalytic intronRNA (388-MER)Tetrahymena thermophilaEukaryaRF00028Misfolded Tetrahymena ribozyme conformation 2Electron microscopy3.842022-08-03
237XSM|1|NGroup I catalytic intronRNA (388-MER)Tetrahymena thermophilaEukaryaRF00028Misfolded Tetrahymena ribozyme conformation 3Electron microscopy4.012022-08-03
247R6N|1|AGroup I catalytic intronGroup I intronTetrahymena thermophilaEukaryaRF00028Exon-free state of the Tetrahymena group I intron, symmetry-expanded monomer from a synthetic trimeric constructElectron microscopy4.12022-05-04
256WLS|11|AGroup I catalytic intronRNA (388-MER)Tetrahymena thermophilaEukaryaRF00028Tetrahymena ribozyme models, 6.8 Angstrom resolutionElectron microscopy6.82020-07-08

Release history

Release3.2773.2783.2793.2803.2813.2823.2833.2843.2853.2863.2873.2883.289
Date2023-04-052023-04-122023-04-192023-04-262023-05-032023-05-102023-05-172023-05-242023-05-312023-06-072023-06-142023-06-212023-06-28

Instances are ordered to put similar structures near each other. Select one instance to see its 3D structure. Selecting two or more instances will show their superposition, but only chains with identical numbers of observed nucleotides will superpose well.

#SPDBTitleMethodResolutionLength
1
7XSL|1|N
Misfolded Tetrahymena ribozyme conformation 2ELECTRON MICROSCOPY3.84388
2
7XSM|1|N
Misfolded Tetrahymena ribozyme conformation 3ELECTRON MICROSCOPY4.01388
3
7XSK|1|N
Misfolded Tetrahymena ribozyme conformation 1ELECTRON MICROSCOPY3.53388
4
7UVT|1|A
Kinetically trapped misfolded state of the Tetrahymena ribozymeELECTRON MICROSCOPY3.9386
5
6WLS|11|A
Tetrahymena ribozyme models, 6.8 Angstrom resolutionELECTRON MICROSCOPY6.8388
6
8HD6|1|N
The relaxed pre-Tet-S1 state of G264A mutated Tetrahymena group I intron with 6nt 3'/5'-exon and 2-aminopurine nucleosideELECTRON MICROSCOPY3.73419
7
7XD3|1|N
The relaxed pre-Tet-S1 state of wild-type Tetrahymena group I intron with 6nt 3'/5'-exonELECTRON MICROSCOPY4.05423
8
7EZ0|1|N
Apo L-21 ScaI Tetrahymena ribozymeELECTRON MICROSCOPY3.14387
9
7XSN|1|N
Native Tetrahymena ribozyme conformationELECTRON MICROSCOPY3.01387
10
7YGD|1|N
Cryo-EM structure of Tetrahymena ribozyme conformation 6 undergoing the second-step self-splicingELECTRON MICROSCOPY3.41384
11
7YGC|1|N
Cryo-EM structure of Tetrahymena ribozyme conformation 4 undergoing the second-step self-splicingELECTRON MICROSCOPY2.65393
12
7YG8|1|N
Cryo-EM structure of Tetrahymena ribozyme conformation 5 undergoing the second-step self-splicingELECTRON MICROSCOPY2.97387
13
7XD7|1|N
The pre-Tet-C state of wild-type Tetrahymena group I intron with 30nt 3'/5'-exonELECTRON MICROSCOPY3.02405
14
7R6N|1|A
Exon-free state of the Tetrahymena group I intron, symmetry-expanded monomer from a synthetic trimeric constructELECTRON MICROSCOPY4.1354
15
7XD4|1|N
The intermediate pre-Tet-S1 state of wild-type Tetrahymena group I intron with 6nt 3'/5'-exonELECTRON MICROSCOPY3.89423
16
8HD7|1|N
The intermediate pre-Tet-S1 state of G264A mutated Tetrahymena group I intron with 6nt 3'/5'-exon and 2-aminopurine nucleosideELECTRON MICROSCOPY3.52419
17
7XD5|1|N
The Tet-S2 state of wild-type Tetrahymena group I intron with 30nt 3'/5'-exonELECTRON MICROSCOPY2.84400
18
8I7N|1|N
The Tet-S1 state of G264A mutated Tetrahymena group I intron with 6nt 3'/5'-exon and 2-aminopurine nucleosideELECTRON MICROSCOPY2.98418
19
7EZ2|1|N
Holo L-16 ScaI Tetrahymena ribozymeELECTRON MICROSCOPY3.05392
20
7XD6|1|N
The Tet-S2 state with a pseudoknotted 4-way junction of wild-type Tetrahymena group I intron with 30nt 3'/5'-exonELECTRON MICROSCOPY2.84434
21
7YG9|1|N
Cryo-EM structure of Tetrahymena ribozyme conformation 1 undergoing the second-step self-splicingELECTRON MICROSCOPY2.68391
22
7YGA|1|N
Cryo-EM structure of Tetrahymena ribozyme conformation 2 undergoing the second-step self-splicingELECTRON MICROSCOPY2.35393
23
7YGB|1|N
Cryo-EM structure of Tetrahymena ribozyme conformation 3 undergoing the second-step self-splicingELECTRON MICROSCOPY2.62393
24
7R6M|1|A
Post-2S intermediate of the Tetrahymena group I intron, symmetry-expanded monomer from a synthetic dimeric constructELECTRON MICROSCOPY3.68356
25
7R6L|1|A
5 prime exon-free pre-2S intermediate of the Tetrahymena group I intron, symmetry-expanded monomer from a synthetic dimeric constructELECTRON MICROSCOPY2.85343

Heat map of mutual geometric discrepancy, in Angstroms per nucleotide. The ordering in the heat map is the same as in the table. The colorbar ranges from 0 to the maximum observed discrepancy. Click above the diagonal to select a range of structures, below the diagonal to select two structures.


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