1COP

THREE-DIMENSIONAL DIMER STRUCTURE OF THE LAMBDA-CRO REPRESSOR IN SOLUTION AS DETERMINED BY HETERONUCLEAR MULTIDIMENSIONAL NMR


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 

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This is version 1.2 of the entry. See complete history


Literature

Three-dimensional dimer structure of the lambda-Cro repressor in solution as determined by heteronuclear multidimensional NMR.

Matsuo, H.Shirakawa, M.Kyogoku, Y.

(1995) J Mol Biol 254: 668-680

  • DOI: 10.1006/jmbi.1995.0646
  • Primary Citation of Related Structures:  
    1COP

  • PubMed Abstract: 
  • The 1H, 15N and 13C magnetic resonances of the lambda-Cro repressor have been assigned almost completely, mainly through the use of heteronuclear multidimensional NMR methods. Inter-subunit NOEs were distinguished by means of heteronuclear spectral editing technique (13C double half filter technique) ...

    The 1H, 15N and 13C magnetic resonances of the lambda-Cro repressor have been assigned almost completely, mainly through the use of heteronuclear multidimensional NMR methods. Inter-subunit NOEs were distinguished by means of heteronuclear spectral editing technique (13C double half filter technique). Based on the distance and dihedral angle constraints derived from the NMR data, the three-dimensional solution structure of the lambda-Cro repressor in the dimeric form has been calculated by the simulated annealing method. The input for the structure calculations consisted of 1H-1H distance constraints, of which 1536 were intra-subunit and 40 were inter-subunit, and dihedral angle, phi, constraints, which numbered 92. The average root-mean-square deviation (RMSD) for all backbone heavy- atoms of the 20 calculated structures for residues 3 to 59 of the total of 66 amino acid residues in both subunits was 1.57 Angstrum, while the average RMSD for each subunit in the same residue range was 0.66 Angstrum. The subunit is composed of three alpha-helices, residues 7 to 13, 16 to 23 and 27 to 36, and a three-stranded anti-parallel beta-sheet composed of residues 3 to 6, 40 to 44 and 50 to 55. The solution structure of the subunit is essentially the same as that in the crystalline form, but the structure of the dimer form in solution differs from that of the dimer unit in the crystalline form. It is suggested that the solution dimer structure is distorted to fit the recognition helices in the major grooves of DNA on complex formation.


    Organizational Affiliation

    Institute for Protein Research, Osaka University, Japan.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CRO REPRESSORA [auth D], B [auth E]66Escherichia virus LambdaMutation(s): 0 
Gene Names: crolambdap57
Find proteins for P03040 (Escherichia phage lambda)
Explore P03040 
Go to UniProtKB:  P03040
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Submitted: 20 
  • OLDERADO: 1COP Olderado

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1995-10-15
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance