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Cryo-EM structure of Tetrahymena ribozyme conformation 3 undergoing the second-step self-splicing

Electron Microscopy
2.62Å resolution
PDB entry 7ygb coloured by chain, front view.
PDB entry 7ygb coloured by chain, side view.
PDB entry 7ygb coloured by chain, top view.
Source organism: Tetrahymena
Assembly composition:
hetero trimer (preferred)
Entry contents: 3 distinct RNA molecules

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Assemblies

Assembly 1 (preferred)
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Assembly Name: RNA
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Multimeric state: hetero trimer
Accessible surface area: 58571.41 Å2
Buried surface area: 8839.25 Å2
Dissociation area: 480.71 Å2
Dissociation energy (ΔGdiss): 9.87 kcal/mol
Dissociation entropy (TΔSdiss): 6.61 kcal/mol
Symmetry number: 1
PDBe Complex ID: PDB-CPX-197362

Macromolecules

RNA chain B
Name: RNA (5'-R(*CP*CP*CP*UP*CP*UP*UP*AP*AP*CP*C)-3')
Representative chains: B
Source organism: Tetrahymena [5890]
Expression system: Not provided
Length: 11 nucleotides
Theoretical weight: 3.38 KDa
RNA (5'-R(*CP*CP*CP*UP*CP*UP*UP*AP*AP*CP*C)-3') in PDB entry 7ygb, assembly 1, front view.
RNA (5'-R(*CP*CP*CP*UP*CP*UP*UP*AP*AP*CP*C)-3') in PDB entry 7ygb, assembly 1, side view.
RNA (5'-R(*CP*CP*CP*UP*CP*UP*UP*AP*AP*CP*C)-3') in PDB entry 7ygb, assembly 1, top view.
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RNA chain N
Name: RNA (393-MER)
Representative chains: N
Source organism: Tetrahymena [5890]
Expression system: in vitro transcription vector pT7-Fluc(deltai) [905932]
Length: 393 nucleotides
Theoretical weight: 127.01 KDa
Rfam: Group I catalytic intron
RNA (393-MER) in PDB entry 7ygb, assembly 1, front view.
RNA (393-MER) in PDB entry 7ygb, assembly 1, side view.
RNA (393-MER) in PDB entry 7ygb, assembly 1, top view.
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RNA chain A
Name: RNA (5'-R(*UP*CP*G)-3')
Representative chains: A
Source organism: Tetrahymena [5890]
Expression system: Not provided
Length: 3 nucleotides
Theoretical weight: 912 Da
RNA (5'-R(*UP*CP*G)-3') in PDB entry 7ygb, assembly 1, front view.
RNA (5'-R(*UP*CP*G)-3') in PDB entry 7ygb, assembly 1, side view.
RNA (5'-R(*UP*CP*G)-3') in PDB entry 7ygb, assembly 1, top view.
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