Inhibits the adhesion of MDA-MB231 human breast cancer cells to fibrinogen and fibronectin, MDA-MB231 cell migration, and the MDA-MB231 cell proliferation. This inhibition may be due to the binding to receptors of the integrin family, probably alpha-v/beta-3 (ITGAV/ITGB3) (40% inhibition of cell adhesion) and alpha-5/beta-1 (ITGA5/ITGB1) (by comparison with lebectin). Heterodimer with the alpha subunit (AC W5XDM0); disulfide-linked. Expressed by the venom gland. Belongs to the snaclec family.