Protein Structure

1. Primary (AA1-AA2-AA3...)

a. Side chains Fig 3-2

b. One-letter code Fig 3-2

2. Secondary

a. Stabilizing interactions of AAs

1) H-bonds

2) Disulfide bonds

b. Alpha helix Fig 3-6, 7

c. Beta sheets Fig 3-8

d. Turns Fig 3-8, 9

3. Tertiary

a. Hydrophobic interactions

b. Arrangement of secondary structures

c. Motifs Fig 3-9

d. Domains Fig 3-10

4. Quaternary (multimeric) Fig 3-4

Note: Figures are from the Lodish text.