The structural classification of proteins (based on motifs) is based primarily on their:
A) amino-acid sequence.
B) evolutionary relationships.
C) function.
D) secondary structure content and arrangement.
E) subunit content and arrangement.

Question

Quizplus · Accepted Answer

The structural classification of proteins is primarily based on their secondary structure content and arrangement, which results in the formation of distinct motifs or recurring patterns. The motifs serve as the building blocks for the overall protein structure and are used to classify proteins into different structural categories. This classification is important for understanding protein function and evolution. Amino-acid sequence, evolutionary relationships, function, and subunit content and arrangement can also provide important information about a protein, but are not the primary basis for structural classification.

The Structural Classification of Proteins (Based on Motifs) Is Based