] The enzyme is a hexamer and displays a two-domain fold, composed of a catalytic (beta/alpha)(8)-like domain and a C-terminal beta-sandwich domain. [ 7 ] Drosophila melanogaster spermatozoa contains an alpha-l-fucosidase that might be involved in fertilisation by interacting with alpha-l-fucose residues on the micropyle of the eggshell. [ 8 ]