primary structure

disulfide bond

Ramachandran plot

secondary structure

α helix

β sheet

reverse turn

tertiary structure

quaternary structure

domain

supersecondary structure

structural motif

Rossmann fold

helix-turn-helix motif

coiled-coil motif

amphipathic helix

oligomer

protomer

molten globule model

chaperone

x-ray crystallography

diffraction pattern

unit cell

electron density map

nuclear magnetic resonance (NMR)

nuclear Overhauser effect spectroscopy (NOESY)