1YKV

Crystal structure of the Diels-Alder ribozyme complexed with the product of the reaction between N-pentylmaleimide and covalently attached 9-hydroxymethylanthracene


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.230 

Starting Model: experimental
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This is version 1.3 of the entry. See complete history


Literature

Structural basis for Diels-Alder ribozyme-catalyzed carbon-carbon bond formation.

Serganov, A.Keiper, S.Malinina, L.Tereshko, V.Skripkin, E.Hobartner, C.Polonskaia, A.Phan, A.T.Wombacher, R.Micura, R.Dauter, Z.Jaschke, A.Patel, D.J.

(2005) Nat Struct Mol Biol 12: 218-224

  • DOI: https://doi.org/10.1038/nsmb906
  • Primary Citation of Related Structures:  
    1YKQ, 1YKV, 1YLS

  • PubMed Abstract: 

    The majority of structural efforts addressing RNA's catalytic function have focused on natural ribozymes, which catalyze phosphodiester transfer reactions. By contrast, little is known about how RNA catalyzes other types of chemical reactions. We report here the crystal structures of a ribozyme that catalyzes enantioselective carbon-carbon bond formation by the Diels-Alder reaction in the unbound state and in complex with a reaction product. The RNA adopts a lambda-shaped nested pseudoknot architecture whose preformed hydrophobic pocket is precisely complementary in shape to the reaction product. RNA folding and product binding are dictated by extensive stacking and hydrogen bonding, whereas stereoselection is governed by the shape of the catalytic pocket. Catalysis is apparently achieved by a combination of proximity, complementarity and electronic effects. We observe structural parallels in the independently evolved catalytic pocket architectures for ribozyme- and antibody-catalyzed Diels-Alder carbon-carbon bond-forming reactions.


  • Organizational Affiliation

    Structural Biology Program, Memorial Sloan-Kettering Cancer Center, New York, New York 10021, USA.


Macromolecules

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Entity ID: 1
MoleculeChains LengthOrganismImage
Diels-Alder ribozyme
A, C
11N/A
Sequence Annotations
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  • Reference Sequence
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Entity ID: 2
MoleculeChains LengthOrganismImage
Diels-Alder ribozyme
B, D
38N/A
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
DAI
Query on DAI

Download Ideal Coordinates CCD File 
E [auth A],
J [auth C]
(3AS,9AS)-2-PENTYL-4-HYDROXYMETHYL-3A,4,9,9A-TETRAHYDRO-4,9[1',2']-BENZENO-1H-BENZ[F]ISOINDOLE-1,3(2H)-DIONE
C24 H25 N O3
ZXWOIFZYPFUNNQ-VMIIQTFKSA-N
MG
Query on MG

Download Ideal Coordinates CCD File 
F [auth B]
G [auth B]
H [auth B]
I [auth B]
K [auth D]
F [auth B],
G [auth B],
H [auth B],
I [auth B],
K [auth D],
L [auth D],
M [auth D]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Binding Affinity Annotations 
IDSourceBinding Affinity
DAI PDBBind:  1YKV Kd: 1.00e+4 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.262 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.230 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.288α = 90
b = 44.039β = 106.87
c = 79.998γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2005-02-22
    Type: Initial release
  • Version 1.1: 2008-04-30
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance
  • Version 1.3: 2023-08-23
    Changes: Data collection, Database references, Derived calculations, Refinement description