Nematocyst lipids of the Portuguese man-of-war Physalia physalis

Stillway, L.W.

Comparative Biochemistry and Physiology. B Comparative Biochemistry 48(1): 35-38


ISSN/ISBN: 0305-0491
PMID: 4151639
DOI: 10.1016/0305-0491(74)90039-x
Accession: 023096068

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1.1. The lipid classes in the nematocyst toxin and nematocyst capsule of Physalia physalis were identified and quantitated.2.2. The toxin contained nearly twice the concentration of total lipid (3·44%) as the capsule (1·45%).3.3. Free fatty acids comprised the largest fraction of total lipids in the toxin (32·8%) and capsule (42·7%).4.4. Cholesterol was identified as the sole sterol in toxin and capsule lipids.5.5. Capsule lipids contained 16·3% phosphonate phosphorus.6.6. A functional role for toxin lipids in relation to toxin stability and pharmacologic activity is discussed.