Question

Which of the three different representations of protein structure is most useful for studying the interior shapes formed by the folds of the protein?

Three models of a protein structure.
The first (from left to right) structure is a space-filling model. Here, each atom is represented by a ball of specific color.
The second structure is a ribbon model. Here, the sequence looks like a ribbon twisted or coiled to match the shape of the protein.
The third structure is a backbone model. Here, the sequence is represented as a thread.

Answer 1

The second structure, the ribbon model of protein structure is most useful for studying the interior shapes formed by the folds of protein.

Step-by-step explanation:

The ribbon model of protein structure is the representation of structure of protein in 3D schematic diagram where colour coding for the different secondary structures can be done for better understanding.

In this model side chain is not shown. Generally, this model of structure is used for the comparison of overall structure of two different proteins.