Glucansucrases: Three-dimensional structures, reactions, mechanism, α-glucan analysis and their implications in biotechnology and food applications

► Structural comparison of glucansucrase three-dimensional structures. ► Promises and applications of lactic acid bacteria extracellular α-glucans. ► Key questions in glucansucrase research. ► α-Glucan synthesis by glucansucrases explained. ► Recent developments in α-glucan structure elucidation.