if you were to sequence one of fibrin alpha helices you would not expect to find a lot of threonine (Thr) all speed 3 to 4 amino acids apart.

why?

If you were to sequence one of fibrin's alpha helices you would not expect to find a lot of threonines (Thr) all spaced 3 to 4 amino acids apart. Why? Thr is highly hydrophobic electrostatic repulsion occurs between the Thr side chain steric hindrance occurs between the bulky Thr side chains the R group of Thr can form hydrogen bonds