viscumin

viscumin

(vĭs-kū′mĭn) [Fm. L. Viscum (album), the taxonym for mistletoe]
Any of the mistletoe lectins. They are toxic proteins that, like ricin, inactivate mammalian ribosomes and prevent them from synthesizing proteins.
References in periodicals archive ?
Type II RIP family is widely represented in plants of different taxonomic origins such as ricin, viscumin, abrin, volkesin, etc.
1993) and with most B chains of the type II RIPs, such as ricin and viscumin (Van Damme et al.
A detailed comparison between the carbohydrate-binding site of ricin, viscumin and volkensin and the sequences obtained here indicate that the peptide identified as number 5 in Table 2 contained amino acid D234 which is part of the carbohydrate-binding site.
Steiner's day have confirmed that mistletoe extract contains several biologically active compounds, including the lectin viscumin, which is capable of inhibiting intracellular protein synthesis, and viscotoxin, which causes cellular necrosis.