How Proteins Move Along a DNA Strand — HHMI BioInteractive Animation

What is the primary mechanism employed by proteins like Sox2 and Oct4 to locate their specific binding sites on DNA?

• Direct, continuous scanning of the entire DNA molecule.

• A trial-and-error sampling process involving 3D diffusion and non-specific interactions.

• Chemical signaling from the target DNA site that attracts the proteins.

• Enzymatic cleavage of non-target DNA to expose the binding site.

The process of a protein finding its specific DNA target involves which three main stages?

• Transcription, translation, and replication.

• Denaturation, renaturation, and hybridization.

• 3D diffusion, non-specific 1D sliding, and specific residence.

• Polymerization, depolymerization, and stabilization.

When Sox2 and Oct4 form a complex on their target DNA, which protein typically binds first, acting as the "lead factor"?

• Oct4

• Sox2

• Both bind simultaneously

• The order is random

Based on the simulation, which type of interaction between the protein and DNA has the longest duration?

• 3D diffusion through the cellular environment.

• Non-specific 1D sliding along the DNA strand.

• Specific residence at the target DNA site.

• Brief non-specific collisions with DNA.