Primary Structure, Secondary Motifs, Tertiary Architecture And Quaternary Organization. Jannette Carey and Vanessa Hanley. Previously published in the Biophysics Textbook Online (BTOL).

http://www.biophysics.org/education/carey.pdf

Membrane Protein Structure. Suzanne Scarlata. Proteins embedded in the lipid bilayers of biological membranes are subject to special physical constraints that influence their 3D structure. An explanation of these principles is provided here. Previously published in the Biophysics Textbook Online (BTOL).

http://www.biophysics.org/education/scarlata.pdf

Protein-Protein Interactions. Catherine Royer. Outline of the thermodynamic and structural principles governing the ways that proteins interact with other proteins. Previously published in the Biophysics Textbook Online (BTOL).

http://www.biophysics.org/education/croyer.pdf