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Protein secondary structure is the local spatial conformation of the polypeptide backbone excluding the side chains. [1] The two most common secondary structural elements are alpha helices and beta sheets, though beta turns and omega loops occur as well.
Secondary structure. The local folding of the polypeptide in some regions gives rise to the secondary structure of the protein. The most common shapes created by secondary folding are the α-helix and β-pleated sheet structures.
Define the secondary structure of proteins and understand the structural features of major secondary structures, including \(\alpha\)-helix, \(\beta\)-pleated sheet, random coil, and triple helix structures.
Regular secondary structures (also referred to as secondary structure elements) common to many proteins include α‐helices, β‐sheets, and turns (see below). They can vary widely in length, from as few as three to five residues in short helices and sheets, to over fifty residues in some coiled‐coil helices (see Frequently Observed ...
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The secondary structure comprises regions stabilized by hydrogen bonds between atoms in the polypeptide backbone. Tertiary structure is the protein's 3-dimensional shape determined by regions stabilized by interactions between the side chains.
This page explains how amino acids combine to make proteins and what is meant by the primary, secondary and tertiary structures of proteins. Quaternary structure isn't covered. It only applies to proteins consisting of more than one polypeptide chain.
Known as alpha helices and beta sheets, these stable folding patterns make up the secondary structure of a protein. Most proteins contain multiple helices and sheets, in addition to other...
Introduction to Protein Secondary Structure: α-Helices and β-Sheets. Here we focus on the general aspects of protein secondary structure.
Secondary structure refers to regular, local structure of the protein backbone, stabilised by intramolecular and sometimes intermolecular hydrogen bonding of amide groups. There are two common types of secondary structure (Figure 11). The most prevalent is the alpha helix.