Chaperonins assist the essential process of protein folding. These models depict the bacterial GroEL/GroES chaperonin as depicted in Figure 4-30B from Lehninger Principles of Biochemistry, Fifth Edition. A multi-material capable printer (IDEX or other) is required for the multicolor version. Extensive support was required and was difficult to remove, especially for the multicolor version.
The author hasn't provided the model origin yet.