Publications: Peer-reviewed journal articles (by staff)

Isodomoic acid C, an unusual amnesic shellfish poisoning toxin from Pseudo-nitzschia australis

1 January, 2005
CITATION

Holland PT, Selwood AI et al 2005. Isodomoic acid C, an unusual amnesic shellfish poisoning toxin from Pseudo-nitzschia australis. Chemical Research in Toxicology 18(5): 814-816.

ABSTRACT

An unusual isomer of domoic acid (1), isodomoic acid C (2), has been found in New Zealand shellfish contaminated by amnesic shellfish poisoning (ASP) toxins and was shown to be produced by a local strain of the pennate diatom Pseudo-nitzschia australis. A bulk culture of this strain was used to isolate 2. The structure was determined from spectroscopic data and was shown to correspond to that of 2 from a Japanese red seaweed, the only other reported occurrence of this compound. The affinity of 2 for GluR6 glutamate receptors was 240-fold lower than for 1, indicating low neurotoxic potential.