This volume focuses on applications of split inteins, and the progress that has been made in the past 5 years on discovery and engineering of fast and more efficient split inteins. The first few chapters in Split Inteins: Methods and Protocols explore new techniques on how to use split inteins for affinity purification of overproduced proteins, and split-intein based technologies to prepare cyclic peptides and proteins. The next few chapters discuss semisynthetic protein trans-splicing using one synthetic intein piece, synthetic intein-extein pieces used to deliver other cargos for...