1HLD

STRUCTURES OF HORSE LIVER ALCOHOL DEHYDROGENASE COMPLEXED WITH NAD+ AND SUBSTITUTED BENZYL ALCOHOLS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Work: 0.183 
  • R-Value Observed: 0.183 

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This is version 1.2 of the entry. See complete history


Literature

Structures of horse liver alcohol dehydrogenase complexed with NAD+ and substituted benzyl alcohols.

Ramaswamy, S.Eklund, H.Plapp, B.V.

(1994) Biochemistry 33: 5230-5237

  • DOI: 10.1021/bi00183a028
  • Primary Citation of Related Structures:  
    1HLD

  • PubMed Abstract: 
  • Structures of the enzyme complexed with NAD+ and 2,3,4,5,6-pentafluorobenzyl alcohol were determined by X-ray crystallography at a resolution of 2.1 A and to a refinement R value of 18.3% for a monoclinic (P2(1)) form and to 2.4 A and an R value of 18.9% for a triclinic crystal form ...

    Structures of the enzyme complexed with NAD+ and 2,3,4,5,6-pentafluorobenzyl alcohol were determined by X-ray crystallography at a resolution of 2.1 A and to a refinement R value of 18.3% for a monoclinic (P2(1)) form and to 2.4 A and an R value of 18.9% for a triclinic crystal form. The pentafluorobenzyl alcohol does not react, due to electron withdrawal by the fluorine atoms. A structure with NAD+ and p-bromobenzyl alcohol in the monoclinic form was also determined at 2.5 A and an R value of 16.7%. The conformations of the subunits in the monoclinic and triclinic crystal forms are very similar. The dimer is the asymmetric unit, and a rigid body rotation closes the cleft between the coenzyme and catalytic domains upon complex formation. In the monoclinic form, this conformational change is described by a rotation of 9 degrees in one subunit and 10 degrees in the other. The pentafluoro- and p-bromobenzyl alcohols bind in overlapping positions. The hydroxyl group of each alcohol is ligated to the catalytic zinc and participates in an extensive hydrogen-bonded network that includes the imidazole group of His-51, which can act as a base and shuttle a proton to solvent. The hydroxymethyl carbon of the pentafluorobenzyl alcohol is 3.4 A from C4 of the nicotinamide ring, and the pro-R hydrogen is in a good position for direct transfer to C4. The p-bromobenzyl alcohol may react after small rotations around single bonds of the alcohol. These structures should approximate the active Michaelis-Menten complexes.


    Related Citations: 
    • Binding of Substrate in a Ternary Complex of Horse Liver Alcohol Dehydrogenase
      Eklund, H., Plapp, B.V., Samama, J.-P., Branden, C.-I.
      (1982) J Biol Chem 257: 14359
    • Structure of a Triclinic Ternary Complex of Horse Liver Alcohol Dehydrogenase at 2.9 Angstroms Resolution
      Eklund, H., Samama, J.-P., Wallen, L., Branden, C.-I., Akeson, A., Jones, T.A.
      (1981) J Mol Biol 146: 561
    • Three-Dimensional Structure of Horse Liver Alcohol Dehydrogenase at 2.4 Angstroms Resolution
      Eklund, H., Nordstrom, B., Zeppezauer, E., Soderlund, G., Ohlsson, I., Boiwe, T., Soderberg, B.-O., Tapia, O., Branden, C.-I., Akeson, A.
      (1976) J Mol Biol 102: 27

    Organizational Affiliation

    Department of Molecular Biology, Swedish University of Agricultural Sciences, Uppsala.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ALCOHOL DEHYDROGENASEA, B374Equus caballusMutation(s): 0 
EC: 1.1.1.1
Find proteins for P00327 (Equus caballus)
Explore P00327 
Go to UniProtKB:  P00327
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.10 Å
  • R-Value Work: 0.183 
  • R-Value Observed: 0.183 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 51.1α = 90
b = 180.7β = 108
c = 44.3γ = 90
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-10-15
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance