Book excerpt: This volume provides the latest methods for synthesis, structural analysis, and elucidation of the mechanism. Chapters guide readers through methods on protein cages for nanotechnology, analyze designed protein cages, determine the structures, and even perform theoretical analysis. Written in the format of the highly successful Methods in Molecular Biology series, each chapter includes an introduction to the topic, lists necessary materials and reagents, includes tips on troubleshooting and known pitfalls, and step-by-step, readily reproducible protocols. Authoritative and cutting-edge, Protein Cages: Methods and Protocols aims to be a useful and practical guide to new researchers and experts looking to expand their knowledge.