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Helix-turn-helix DNA-binding domain

Helix-turn-helix DNA-binding domain

C023/8881

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Credit

SCIENCE PHOTO LIBRARY SCIENCE PHOTO LIBRARY

Caption

Helix-turn-helix DNA-binding domain. Illustration of a regulatory protein (blue) binding to DNA (deoxyribonucleic acid, orange helix) in a helix-turn-helix formation. Such protein-DNA binding can enhance or suppress expression of the genetic information carried by the DNA. In this type of DNA-binding protein, the alpha-helices of the protein are aligned around a turning point ('turn', upper right) and occupying the major groove in the DNA structure. The key protein component is called the 'recognition alpha helix'. For this artwork with labels, see C023/8880.

Release details

Model release not required. Property release not required.

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