1M5P

Transition State Stabilization by a Catalytic RNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.223 

Starting Model: experimental
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This is version 1.5 of the entry. See complete history


Literature

Transition state stabilization by a catalytic RNA

Rupert, P.B.Massey, A.P.Sigurdsson, S.T.Ferre-D'Amare, A.R.

(2002) Science 298: 1421-1424

  • DOI: https://doi.org/10.1126/science.1076093
  • Primary Citation of Related Structures:  
    1M5O, 1M5P, 1M5V

  • PubMed Abstract: 

    The hairpin ribozyme catalyzes sequence-specific cleavage of RNA through transesterification of the scissile phosphate. Vanadate has previously been used as a transition state mimic of protein enzymes that catalyze the same reaction. Comparison of the 2.2 angstrom resolution structure of a vanadate-hairpin ribozyme complex with structures of precursor and product complexes reveals a rigid active site that makes more hydrogen bonds to the transition state than to the precursor or product. Because of the paucity of RNA functional groups capable of general acid-base or electrostatic catalysis, transition state stabilization is likely to be an important catalytic strategy for ribozymes.


  • Organizational Affiliation

    Division of Basic Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue North, Seattle, WA 98109-1024, USA.


Macromolecules

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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
U1 SMALL NUCLEAR RIBONUCLEOPROTEIN AG [auth C],
H [auth F]
100Homo sapiensMutation(s): 2 
Gene Names: SNRPA
UniProt & NIH Common Fund Data Resources
Find proteins for P09012 (Homo sapiens)
Explore P09012 
Go to UniProtKB:  P09012
PHAROS:  P09012
GTEx:  ENSG00000077312 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP09012
Sequence Annotations
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  • Reference Sequence

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Entity ID: 1
MoleculeChains LengthOrganismImage
RNA INHIBITOR SUBSTRATE
A, D
12N/A
Sequence Annotations
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  • Reference Sequence

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Entity ID: 2
MoleculeChains LengthOrganismImage
RNA INHIBITOR SUBSTRATEB [auth M],
E [auth P]
9N/A
Sequence Annotations
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  • Reference Sequence
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Entity ID: 3
MoleculeChains LengthOrganismImage
RNA HAIRPIN RIBOZYMEC [auth B],
F [auth E]
92N/A
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download Ideal Coordinates CCD File 
AA [auth E]
BA [auth E]
CA [auth E]
DA [auth E]
EA [auth E]
AA [auth E],
BA [auth E],
CA [auth E],
DA [auth E],
EA [auth E],
FA [auth C],
GA [auth F],
HA [auth F],
I [auth B],
J [auth B],
K [auth B],
L [auth B],
M [auth B],
N [auth B],
O [auth B],
P [auth B],
Q [auth B],
R [auth B],
S [auth B],
T [auth B],
U [auth P],
V [auth E],
W [auth E],
X [auth E],
Y [auth E],
Z [auth E]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.60 Å
  • R-Value Free: 0.280 
  • R-Value Work: 0.223 
  • R-Value Observed: 0.223 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 259.8α = 90
b = 44.3β = 107
c = 102.4γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2002-10-12
    Type: Initial release
  • Version 1.1: 2008-04-28
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-04-04
    Changes: Data collection
  • Version 1.4: 2021-10-27
    Changes: Database references, Derived calculations
  • Version 1.5: 2024-02-14
    Changes: Data collection, Refinement description