This entry represents the fourth annexin domain of of Alpha-11 giardin, an unusual annexin from Giardia lamblia [1]. Alpha-11 giardin is a member of the multi-gene alpha-giardin family in the intestinal protozoan, Giardia lamblia. This gene family shares an ancestry with the annexin super family, whose common characteristic is calcium-dependent binding to membranes that contain acidic phospholipids [1].

1: Apo and calcium-bound crystal structures of Alpha-11 giardin, an unusual annexin from Giardia lamblia. Pathuri P, Nguyen ET, Svard SG, Luecke H; J Mol Biol. 2007;368:493-508. PMID:17355882