Cholera Toxins. Produced by Vibrio cholerae, cholera toxin (CT) is a multimeric enterotoxin that transfers ADP-ribose to a G protein, locking adenylate cyclase in an 'on' position.
echinoderm. n. 1. (Animals) any of the marine invertebrate animals constituting the phylum Echinodermata, characterized by tube feet, a calcite body-covering (test), and a five-part symmetrical body. The group includes the starfish, sea urchins, and sea cucumbers.ny of various invertebrate sea animals having a hard spiny outer covering, an internal skeleton, and a radially symmetrical body. Starfish, sea urchins, and sea cucumbers are echinoderms.
Hyponyms (each of the following is a kind of echinoderm): sea star; starfish (echinoderms characterized by five arms extending from a central disk). brittle star; brittle-star; serpent star (an animal resembling a starfish with fragile whiplike arms radiating from a small central disc).ypernyms (echinoderm is a kind of...): invertebrate (any animal lacking a backbone or notochord; the term is not used as a scientific classification). Meronyms (parts of echinoderm): water vascular system (system of fluid-filled tubes used by echinoderms in locomotion and feeding and respiration).