A Common Structure for Proteins That Bind DNA is Helix-Turn-Helix

Question

A common structure for proteins that bind DNA is helix-turn-helix.

Accepted Answer

The helix-turn-helix structure is a common motif in proteins that interact with DNA. It consists of two alpha helices connected by a short loop, with the first helix often involved in recognizing a specific DNA sequence and the second helix facilitating binding to the DNA.