1LEB

SOLUTION STRUCTURE OF THE LEXA REPRESSOR DNA BINDING DETERMINED BY 1H NMR SPECTROSCOPY


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 28 

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This is version 1.2 of the entry. See complete history


Literature

Solution structure of the LexA repressor DNA binding domain determined by 1H NMR spectroscopy.

Fogh, R.H.Ottleben, G.Ruterjans, H.Schnarr, M.Boelens, R.Kaptein, R.

(1994) EMBO J 13: 3936-3944

  • Primary Citation of Related Structures:  
    1LEA, 1LEB

  • PubMed Abstract: 
  • The structure of the 84 residue DNA binding domain of the Escherichia coli LexA repressor has been determined from NMR data using distance geometry and restrained molecular dynamics. The assignment of the 1H NMR spectrum of the molecule, derived from 2- and 3-D homonuclear experiments, is also reported ...

    The structure of the 84 residue DNA binding domain of the Escherichia coli LexA repressor has been determined from NMR data using distance geometry and restrained molecular dynamics. The assignment of the 1H NMR spectrum of the molecule, derived from 2- and 3-D homonuclear experiments, is also reported. A total of 613 non-redundant distance restraints were used to give a final family of 28 structures. The structured region of the molecule consisted of residues 4-69 and yielded a r.m.s. deviation from an average of 0.9 A for backbone and 1.6 A for all heavy atoms. The structure contains three regular alpha-helices at residues 6-21 (I), 28-35 (II) and 41-52 (III), and an antiparallel beta-sheet at residues 56-58 and 66-68. Helices II and III form a variant helix-turn-helix DNA binding motif, with an unusual one residue insert at residue 38. The topology of the LexA DNA binding domain is found to be the same as for the DNA binding domains of the catabolic activator protein, human histone 5, the HNF-3/fork head protein and the Kluyveromyces lactis heat shock transcription factor.


    Organizational Affiliation

    Bijvoet Center for Biomolecular Research, Utrecht University, The Netherlands.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
LEXA REPRESSOR DNA BINDING DOMAIN A84Escherichia coliMutation(s): 0 
EC: 3.4.21.88
Find proteins for P0A7C2 (Escherichia coli (strain K12))
Explore P0A7C2 
Go to UniProtKB:  P0A7C2
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 28 
  • OLDERADO: 1LEB Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1994-08-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance