Magnitude of effect. In folding and solubility, and in many reaction mechanisms. Energy Minimisation Add all terms together. Remind primary, secondary, super-secondary, tertiary, quaternary Folding produces strands and helices first. Arrows and cylinders.
Strands lie together in sheets.
Page on secondary structure prediction. Hydrogen bonding pattern 3.6 per turn. 100 degree turn. Few prolines and few glycines. Side chains sticking out.