Beta protein sheet

For example, hemoglobin is almost entirely alpha‐helical, and antibodies are composed almost entirely of beta structures. The secondary structures of proteins are often depicted in ribbon diagrams, where the helices and beta sheets of a protein are shown by corkscrews and arrows respectively, as shown in Figure 3 . A Beta sheet is a protein structure which was developed by Linus Pauling and Robert Corey in 1951. The name Beta was chosen, as it was their second proposed structure (the alpha helix being the first) . It is important for protein structure, such as fatty-acid binding proteins, which are required for lipid metabolism. Jun 17, 2016 · Beta Pleated Sheet: Each peptide bond in the beta pleated sheet is planar and has the trans-conformation. The C=O and N-H groups of peptide bonds from adjacent chains are in the same plane and point toward each other forming hydrogen bonding between them. The Beta-Sheet . There are two major classes of beta-sheets; the parallel beta-sheet the antiparallel beta-sheet The Parallel Beta-Sheet is characterized by two peptide strands running in the same direction held together by hydrogen bonding between the strands. The bottom two strands on the figure represent a parallel beta sheet. $\begingroup$ Beta strands can form both intra- and interchain sheets. I wouldn't get too caught up in the latter case when deciding what level of protein structure beta sheets fit into. $\endgroup$ – canadianer Oct 27 '17 at 21:41