Figure 1. Detailed domain organization of MaAmyA and MaAmyB, compared to the general domain organization of GH13_42 members; numbers indicate the first and last aa of the domain or conserved insert.

Domains are indicated as follows: white: signal sequence; red: AB-regions of the catalytic domain; pale yellow, C-region; blue: FNIII domain; green: CBM25 domain; pink: CBM74, a novel CBM domain¹⁵; orange yellow: aberrant C-region. Conserved insertions in the AB-regions of GH13_42 (including MaAmyB) are indicated as follows: light blue box: region-B; grey box: region-A insert 1; black box: region-A insert 2.