Distance learning: Principles of Protein Structure (PPS)

• 7.1 Introduction to Quaternary Structure
• 7.2 Closed Structures and their Point Group Symmetries

Introduction to Rotational and Cyclic Symmetry

Point Group 2

Point Groups 3, 4, 5, 6

Point Groups 7, 9, 11

Pseudocyclic symmetry

Introduction to Dihedral Symmetry

Point Group 222

Point Group 32

Point Group 422

Point Group 52

Point Group 622

Point Group 72

Pseudodihedral symmetry

Higher Symmetries (cubic and icosahedral)

Cubic (tetrahedral) point group 23

Cubic (octahedral) point group 432

Icosahedral point group 532

Symmetry and Databases

• 7.3 Quaternary Structure by Domain Swapping
• 7.4 Virus Structure
• 7.5 Closed Structures without Symmetry
• 7.6 Open Structure: Symmetrical Helices and their Helical Groups
• 7.7 Open Structure without Symmetry: Common Biological Helices and Fibres
• 7.8 References