Supersecondary structures that contain recognizable combinations of α-helices,β-strands and loops (e.g.the Greek Key)are called ________.
A)domains
B)folds
C)homologous regions
D)motifs

Question

Quizplus · Accepted Answer

The recognizable combinations of α-helices, β-strands and loops are called motifs. Domains are larger structural units containing multiple motifs or other smaller units. Folds are the overall arrangement of secondary structures in a protein. Homologous regions refer to similar regions found in different proteins that share a common ancestor. Therefore, the best choice is D, motifs.

Supersecondary Structures That Contain Recognizable Combinations of α-Helices,β-Strands and Loops