Fig. 5
a A section of a projection image of GroEL protein complexes in vitreous ice captured using Cryo-EM. b Averaged top view of GroEL. c Averaged side view of GroEL. d An end-on view of the 3D atomic structure of GroEL complex. Image credits – a Vossman, https://commons.wikimedia.org/wiki/File:Cryoem\_groel.jpg, b, c: Electron Microscopy Data Bank (EMD-8750), d: Protein Data Bank (PDB ID: 5W0S)