This entry includes insecticidal protein Cry1Ac from Bacillus thuringiensis, which contains a proteolytically labile protoxin segment (in the C-terminal region) and a three-domain toxic core at the N terminus (domains I-III) [1]. The protoxin segment consists of domains IV-VII. This entry represents domain VII, which is a beta-roll that closely resembles carbohydrate-binding modules.

1: Structure of the full-length insecticidal protein Cry1Ac reveals intriguing details of toxin packaging into in vivo formed crystals. Evdokimov AG, Moshiri F, Sturman EJ, Rydel TJ, Zheng M, Seale JW, Franklin S; Protein Sci. 2014;23:1491-1497. PMID:25139047