Beta (b) Pleated Sheet Definition:

For proteins, a feature of secondary structure that forms when two or more protein chains line up side-by-side.

Beta (b) Pleated Sheet Explained:

In this formation, hydrogen bonding occurs between the C=O and N-H groups. This type of formation usually occurs when the functional (R) side group are relatively small, because the larger functional group will block the necessary proximity required to achieve hydrogen bonding.