+**Secondary structure** refers to the local, regularly repeating arrangements of a polymer chain, like a protein. These common folding patterns, such as the [Alpha Helix](/wiki/Alpha_Helix) and [Beta Sheet](/wiki/Beta_Sheet), are formed by hydrogen bonds within the backbone, shaping the molecule's initial architecture.
+## See also
+- [Primary Structure](/wiki/Primary_Structure)
+- [Tertiary Structure](/wiki/Tertiary_Structure)
+- [Protein Folding](/wiki/Protein_Folding)
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