# 2.5 Backbone Geometry: The Ramachandran Map

> Backbone Geometry: The Ramachandran Map (Module 2: The Weaver). Key concept: Phi/psi dihedral angles. Explain what the φ and ψ dihedral angles describe.

Backbone Geometry: The Ramachandran Map (Module 2: The Weaver). Key concept: Phi/psi dihedral angles. Explain what the φ and ψ dihedral angles describe.

- Explain what the φ and ψ dihedral angles describe
- Explain why most φ/ψ combinations are sterically forbidden
- Locate helices, sheets and loops in their own regions of the Ramachandran plot
- Explain why glycine reaches regions no other residue can, and why proline is confined

## Links

- [Module 2: The Weaver](https://proteindesign.academy/module/2)
- [2.1 The Alpha Helix](https://proteindesign.academy/module/2/1)
- [2.2 Beta Sheets](https://proteindesign.academy/module/2/2)
- [2.3 Loops, Turns & the Unsung Heroes](https://proteindesign.academy/module/2/3)
- [2.4 Helix Breakers & Structural Disruptors](https://proteindesign.academy/module/2/4)
- [2.integration Secondary Structure Prediction](https://proteindesign.academy/module/2/integration)
- [The Pattern Master](https://proteindesign.academy/module/2/capstone)