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NDB ID: PD0939    PDB ID: 2CAX 


Title:

STRUCTURAL BASIS FOR COOPERATIVE BINDING OF RIBBON-HELIX-HELIX REPRESSOR OMEGA TO MUTATED DIRECT DNA HEPTAD REPEATS

Molecular Description:

ORF OMEGA

Deposited:

2005-12-23

Released:

2006-03-15

Structural Keywords:

RH DOUBLE HELIX

Nucleic Acid Sequence:

Click to show/hide 4 nucleic acid sequences

Protein Sequence:

Click to show/hide 1 protein sequences

Primary Citation:

Weihofen, W.A., Cicek, A., Pratto, F., Alonso, J.C., Saenger, W.
Structures of Omega Repressors Bound to Direct and Inverted DNA Repeats Explain Modulation of Transcription. 
Nucleic Acids Res., 34, pp. 1450 - , 2006.

Experimental Information:

X-RAY DIFFRACTION

Space Group:

C 1 2 1

Cell Constants:

a = 219.957   b = 44.655   c = 76.136 (Ångstroms)

α = 90.0   β = 109.26   γ = 90.0 (degrees)

Refinement:

The structure was refined using the REFMAC program. The R value is 0.21 for 13145 reflections in the resolution range 30.0 to 2.9 Ångstroms with Fobs >  0.0 sigma(Fobs) and with I >  0.0 sigma(I)