Helix-turn-helix motiff of the lambda repressor

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This complex shows the helix-turn-helix motiff of the lambda repressor (which interacts with the major grove of ds-DNA that is not shown in this model).

For more information see Biochemistry Online: Chapter 5D - Binding and the Control of Gene Transcription

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Wire Frame
Backbone
Backbone and sidechains
Cartoon showing hydrogen bonds
Cartoon and Wireframe
Dot surface and Wireframe