Concept #1: Antiparallel and Parallel Beta Sheets
Practice: Silk fibroin contains predominantly β sheet conformation. Which of the following is true regarding its β sheets?
Concept #2: Antiparallel and Parallel Beta Sheet Hydrogen Bonding
Practice: The diagram illustrates:
Practice: The major reason that antiparallel β-sheets are more stable than parallel β-sheets is that the latter:
Practice: Which (phi, psi) pair of bond angles is closest to those of the residues shown in the figure below?
Practice: What type of β-sheet is presented in the figure below? Draw all hydrogen bonds between appropriate groups.
Practice: Draw a two-stranded antiparallel β-sheet with appropriate hydrogen bonding between the following peptides: