Two high-resolution structures of potato endo-1,3-β-glucanase reveal subdomain flexibility with implications for substrate binding

1.40 and 1.26 Å resolution crystal structures of potato endo-1,3-β-glucanase, a member of glycoside hydrolase family 17, reveal high flexibility of a subdomain that forms part of the active-site cleft and an unusual crystal-packing mode characterized by infinite chains of protein molecules linked via His-tag docking in the next active site.