試題詳解

32. Which of the following statements about fibrous proteins is incorrect?
(A) Fibrous proteins usually have good mechanical strength and play a structural role in living organisms.
(B) The central rod domain of a-keratin is an a-helix structure flanked by non- helical N- and C- terminal domains.
(C) Pairs of right-handed a-helces of a-keratin wrap around each other to form a left-twisted coiled coil.
(D) Collagen is an extensible and low glycine content fibrous protein.
(E) Silk fibroin is primarily composed of stacked antiparalle! β sheets.