mastoparan B

Chemical Properties

Isolated from the venom of the Taiwan hornet Vespa basalis.

Definition

ChEBI: A member of the class of mastopyrans that is a 14-amino acid polypeptide comprising leucyl, lysyl, leucyl, lysyl, seryl, isoleucyl, valyl, seryl, tryptophyl, alanyl, lysyl, lysyl, valyl, and leucinamide residues coupled in sequence. It is the major active omponent of the venom of the hornet Vespa basalis and causes degranulation of mast cells. It exhibits antimicrobial activity against both Gram-positive and -negative bacteria as well as haemolytic activity on chicken, human and sheep erythrocy es.

Hazard

A poison.