Secondary structure motifs

Secondary structure motifs are specific patterns that form within a protein’s chain of amino acids, helping the protein fold into its functional shape. The main motifs are alpha helices—coiled, spiral structures—and beta sheets—flat, pleated strands. These structures are stabilized by hydrogen bonds and serve as building blocks for the protein's overall three-dimensional form. Understanding these motifs is crucial because they influence how proteins perform their biological roles, like enzymes catalyzing reactions or forming structural components in cells.