4GXY

RNA structure

  • Classification: RNA
  • Mutation(s): No 

  • Deposited: 2012-09-04 Released: 2012-10-17 
  • Deposition Author(s): Serganov, A., Peselis, A.

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.05 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 

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Ligand Structure Quality Assessment 


This is version 1.3 of the entry. See complete history. 


Literature

Structural insights into ligand binding and gene expression control by an adenosylcobalamin riboswitch.

Peselis, A., Serganov, A.

(2012) Nat Struct Mol Biol 19: 1182-1184

  • DOI: https://doi.org/10.1038/nsmb.2405
  • Primary Citation of Related Structures:  
    4GXY

  • PubMed Abstract: 

    Coenzyme B(12) has a key role in various enzymatic reactions and controls expression of bacterial genes through riboswitches. Here we report the crystal structure of the Symbiobacterium thermophilum B(12) riboswitch bound to its ligand adenosylcobalamin. The riboswitch forms a unique junctional structure with a large ligand-binding pocket tailored for specific recognition of the adenosyl moiety and flanked by structural elements that stabilize the regulatory region and enable control of gene expression.

    • Organizational Affiliation: 

    Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, New York, USA.


Macromolecules
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Entity ID: 1
MoleculeChains LengthOrganismImage
Adenosylcobalamin riboswitch172N/A
Sequence Annotations
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  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
B1Z
Query on B1Z
Download Ideal Coordinates CCD File 
B [auth A],
C [auth A]		Adenosylcobalamin
C72 H101 Co N18 O17 P
NAGDYSDXWHSJMC-OUCXYWSSSA-M
IRI
Query on IRI
Download Ideal Coordinates CCD File 
D [auth A]
E [auth A]
F [auth A]
G [auth A]
H [auth A]
D [auth A],
E [auth A],
F [auth A],
G [auth A],
H [auth A],
I [auth A],
J [auth A]
IRIDIUM HEXAMMINE ION
H18 Ir N6
CGMAOQLDNKCXGK-UHFFFAOYSA-N
MG
Query on MG
Download Ideal Coordinates CCD File 
K [auth A],
L [auth A]		MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.05 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 96.633α = 90
b = 96.633β = 90
c = 132.684γ = 120
Software Package:
Software NamePurpose
MAR345data collection
PHENIXmodel building
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

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Ligand Structure Quality Assessment 


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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-10-17
    Type: Initial release
  • Version 1.1: 2012-11-21
    Changes: Database references
  • Version 1.2: 2017-11-15
    Changes: Refinement description
  • Version 1.3: 2024-02-28
    Changes: Data collection, Database references, Derived calculations