Proteins that bind to regulatory sequences have shapes that fit into the
A)promoter.
B)operator.
C)operon.
D)minor groove of DNA.
E)major groove of DNA.

Question

Quizplus · Accepted Answer

Regulatory proteins bind to specific DNA sequences by fitting into the major groove of the DNA, which provides a specific pattern of hydrogen-bonding sites for the protein to interact with. The minor groove is narrower and less accessible, and is not typically used for specific protein-DNA interactions. Therefore, choice E (major groove of DNA) is the best choice.

Proteins That Bind to Regulatory Sequences Have Shapes That Fit