1LLD

MOLECULAR BASIS OF ALLOSTERIC ACTIVATION OF BACTERIAL L-LACTATE DEHYDROGENASE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Observed: 0.179 

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This is version 1.4 of the entry. See complete history


Literature

Molecular basis of allosteric activation of bacterial L-lactate dehydrogenase.

Iwata, S.Ohta, T.

(1993) J Mol Biol 230: 21-27

  • DOI: https://doi.org/10.1006/jmbi.1993.1122
  • Primary Citation of Related Structures:  
    1LLD

  • PubMed Abstract: 

    The three-dimensional structure of allosteric L-lactate dehydrogenase from Bifidobacterium longum, the first example of a T-state structure of L-lactate dehydrogenase, has been determined to 2.0 A. A comparative study of this structure with the previously reported R-state structure from Bacillus stearothermophilus has revealed the allosteric activation mechanism of the bacterial L-lactate dehydrogenase. The fructose 1,6-bisphosphate-induced conformational change at the effector site and the substrate affinity change at the activity site are clearly shown at a molecular level. Coupling of these changes can be simply explained by a set of concerted rotations between subunits in the tetramer of the enzyme. This T to R transition is the first example for a tetrameric allosteric protein where the rotations occur around each of three axes of symmetry.


  • Organizational Affiliation

    Photon Factory, National Laboratory for High Energy Physics, Ibaraki-ken, Japan.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
L-LACTATE DEHYDROGENASE
A, B
319Bifidobacterium longum subsp. longumMutation(s): 0 
EC: 1.1.1.27
UniProt
Find proteins for E8ME30 (Bifidobacterium longum subsp. longum (strain ATCC 15707 / DSM 20219 / JCM 1217 / NCTC 11818 / E194b))
Explore E8ME30 
Go to UniProtKB:  E8ME30
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupE8ME30
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Observed: 0.179 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.8α = 90
b = 131.4β = 90
c = 63.8γ = 90
Software Package:
Software NamePurpose
PROLSQrefinement

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations, Other
  • Version 1.4: 2024-02-14
    Changes: Data collection, Database references, Derived calculations