Which of the following best characterizes the interactions between factor and a

Question

Which of the following best characterizes the interactions between factor and a typical gene promoter in E. coli?

Which of the following best characterizes the interactions between factor and a typical gene promoter in E. coli?

One -helix from region 2 recognizes and binds the –10 element; a helix-turn-helix from region 4 recognizes and binds the –35 element; CTD binds to the UP-element. One -helix from region 2 recognizes and binds the –10 element of the promoter and uses several of its aromatic amino acids to stabilize the melted DNA. A helix-turn-helix from region 4 recognizes and binds the –35 element. One -helix from region 2 recognizes and binds the –35 element of the promoter and uses several of its aromatic amino acids to stabilize the melted DNA. One -helix from region 2 recognizes and binds the –10 element; a helix-turn-helix from region 4 recognizes and binds the –35 element.

Explanation / Answer

The answer is second one

One -helix from region 2 recognizes and binds the –10 element of the promoter and uses several of its aromatic amino acids to stabilize the melted DNA. A helix-turn-helix from region 4 recognizes and binds the –35 element.

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