# 10.2 Symmetry in Protein Assemblies

> Symmetry in Protein Assemblies (Module 10: The Assembler). Key concept: Cyclic and dihedral symmetry in complexes. Distinguish cyclic (Cn) from dihedral (Dn) symmetry.

Symmetry in Protein Assemblies (Module 10: The Assembler). Key concept: Cyclic and dihedral symmetry in complexes. Distinguish cyclic (Cn) from dihedral (Dn) symmetry.

- Distinguish cyclic (Cn) from dihedral (Dn) symmetry
- Determine the symmetry of a complex from its structure, counting chains and locating axes
- Explain why a Cn assembly has one unique interface generated n times
- Distinguish exact symmetry from pseudo-symmetry, and explain why haemoglobin is called pseudo-D2 but is rigorously C2

## Links

- [Module 10: The Assembler](https://proteindesign.academy/module/10)
- [Introduction](https://proteindesign.academy/module/10/intro)
- [10.1 Why Multimerize?](https://proteindesign.academy/module/10/1)
- [10.3 Interface Design Principles](https://proteindesign.academy/module/10/3)
- [10.4 Evaluating Assemblies](https://proteindesign.academy/module/10/4)
- [10.integration The Assembly Blueprint](https://proteindesign.academy/module/10/integration)
- [The Assembly Designer](https://proteindesign.academy/module/10/capstone)
- [Use the Tools](https://proteindesign.academy/module/10/tools)