Which of the following statements about β-sheets is correct?
They always have evenly spaced hydrogen bonds is the scientifically accurate answer to this question. Within the study of Protein Structure, this concept is well-established through extensive research and is documented in standard scientific literature. The specific properties, mechanisms, or characteristics of They always have evenly spaced hydrogen bonds directly address what is being asked. Among the other options, Parallel β-sheets are more stable than antiparallel, They contain side chains pointing alternately above and below the sheet, and They are never involved in domain structures do
Ref: Lehninger Principles of Biochemistry, Nelson & Cox, 8th Ed., Ch. 4
