Experimental Data Snapshot

  • Resolution: 2.80 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.239 

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Structure of betaine aldehyde dehydrogenase at 2.1 A resolution.

Johansson, K.El-Ahmad, M.Ramaswamy, S.Hjelmqvist, L.Jornvall, H.Eklund, H.

(1998) Protein Sci 7: 2106-2117

  • DOI: https://doi.org/10.1002/pro.5560071007
  • Primary Citation of Related Structures:  
    1A4S, 1BPW

  • PubMed Abstract: 

    The three-dimensional structure of betaine aldehyde dehydrogenase, the most abundant aldehyde dehydrogenase (ALDH) of cod liver, has been determined at 2.1 A resolution by the X-ray crystallographic method of molecular replacement. This enzyme represents a novel structure of the highly multiple ALDH, with at least 12 distinct classes in humans. This betaine ALDH of class 9 is different from the two recently determined ALDH structures (classes 2 and 3). Like these, the betaine ALDH structure has three domains, one coenzyme binding domain, one catalytic domain, and one oligomerization domain. Crystals grown in the presence or absence of NAD+ have very similar structures and no significant conformational change occurs upon coenzyme binding. This is probably due to the tight interactions between domains within the subunit and between subunits in the tetramer. The oligomerization domains link the catalytic domains together into two 20-stranded pleated sheet structures. The overall structure is similar to that of the tetrameric bovine class 2 and dimeric rat class 3 ALDH, but the coenzyme binding with the nicotinamide in anti conformation, resembles that of class 2 rather than of class 3.

  • Organizational Affiliation

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

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
A, B, C, D
503Gadus morhua callariasMutation(s): 0 
Find proteins for P56533 (Gadus morhua subsp. callarias)
Explore P56533 
Go to UniProtKB:  P56533
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP56533
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.80 Å
  • R-Value Free: 0.257 
  • R-Value Work: 0.239 
  • R-Value Observed: 0.239 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 85.4α = 105.32
b = 86.57β = 113.29
c = 89.81γ = 98.16
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-08-19
    Type: Initial release
  • Version 1.1: 2008-04-27
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2023-08-09
    Changes: Data collection, Database references, Derived calculations, Refinement description