Protein structures have several different levels of organization.The primary structure of a protein is its amino acid sequence.The secondary and tertiary structures are more complicated.Consider the definitions below and select the one that best fits the term "protein domain."

Question

Quizplus · Accepted Answer

A protein domain is a section of a protein that can fold independently into a compact, stable structure. These compact structures usually have a specific function, such as binding to a specific molecule or catalyzing a chemical reaction. Some proteins contain multiple domains that work together to carry out a larger function.

Protein Structures Have Several Different Levels of Organization