Fig. 2
From: Therapeutic potential of bacteriophage endolysins for infections caused by Gram-positive bacteria
The typical modular structures of different types of endolysins derived from phages targeting G+ bacteria. 24 types of endolysins are proposed according to their molecule structures. CHAP cysteine- and histidine-dependent aminopeptidase/hydrolase, SH3 bacterial Src homology 3 domain, responsible for cell-wall peptidoglycan recognition and binding, ChBD choline-binding domain, PSA_CBD cell wall-binding domain, ZoocinA_TRD a target recognition domain, Cpl-7 Cpl-7-like cell wall-binding domain, LysM a small domain involved in binding peptidoglycan