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Arenicola

Sea cucumbers (Holothuroidea, Echinodermata) appear to be unique in their mode of squalene oxide (37) cyclization. Tritium-labeled lanosterol (33), cycloartenol (32) and parkeol (38) were individually administered to the sea cucumber Holothuria arenicola. While the former two triterpenes were not metabolized [22], parkeol was efficiently transformed into 14x-methyl-5a-cho-lest-9(l l)-en-3/ -ol (39) (Scheme 3). Other A1 sterols present in H. arenicola were not found to be radioactive and were thus assumed to be of dietary origin. The intermediacy of parkeol was confirmed by the feeding of labeled mevalonate (23) and squalene (26) to the sea cucumber Stichopus californicus [15]. Both precursors were transformed into parkeol, but not lanosterol nor cycloartenol, aqd to 4,14a-dimethyl-5a-cholest-9(ll)-en-3/J-ol (40) and 14a-methyl-5a-cholest-9(ll)-en-3/ -ol. Thus, while all other eukaryotes produce either cycloartenol or lanosterol, parkeol is the intermediate between triterpenes and the 14-methyl sterols in sea cucumbers. [Pg.16]

Lugworm, Arenicola marina-, held on copper-contaminated sediments 182-204 mg Cu/kg DW sediment 1113 mg Cu/kg DW sediment Ragworm, Hediste diversicolor 5, 10, or 20 pg/L at four salinities and three temperatures 1-day-old larvae... [Pg.187]

Chen, Z. and L.M. Mayer. 1998. Digestive proteases of the lugworm (Arenicola marina) inhibited by Cu from contaminated sediments. Environ. Toxicol. Chem. 17 433-438. [Pg.218]

Walsh, G.E., M.K. Louie, L. McLaughlin, and E.M. Lores. 1986a. Lugworm (Arenicola cristata) larvae in toxicity tests survival and development when exposed to organotins. Environ. Toxicol. Chem. 5 749-754. [Pg.634]

Schoor, W.P. and S.M. Newman. 1976. The effect of mirex on the burrowing activity of the lugworm (Arenicola cristata). Trans. Amer. Fish. Soc. 105 700-703. [Pg.1157]

Polychaete annelid worms, marine England, 1984-86 near nuclear plant vs. control location Arenicola marina ... [Pg.1666]

OMe Marine bacteria - Streptomyces sp. and Salinispora arenicola Cyciomarins A-D - peptides with anti-infiammatory property 83, 84... [Pg.21]

Cod Gains morhua Lugworm, Arenicola Mixture threonine. Pawson, 1977... [Pg.341]

Site no. Corophium volutator Arenicola marina Echinocardium cordatum C. elegans ... [Pg.23]

Theissen U (2006) Die Sulfid Chinon Oxidoreductase (SQR) des Wattwurms Arenicola marina-. Funktion, Mechanismus und Evolution. Dissertation, University of Diisseldorf... [Pg.19]

Seals, J.D. Grossman, S.H. Purification and characterization of arginine kinase from the sea cucumber Caudina arenicola. Comp. Biochem. Physiol. B, 89, 701-707 (1988)... [Pg.397]

Surholt, B. Taurocyamine kinase from body-wall musculature of the lug-worm Arenicola marina. Eur. J. Biochem., 93, 279-285 (1979)... [Pg.402]

See other pages where Arenicola is mentioned: [Pg.65]    [Pg.197]    [Pg.609]    [Pg.613]    [Pg.661]    [Pg.1137]    [Pg.191]    [Pg.342]    [Pg.25]    [Pg.40]    [Pg.635]    [Pg.339]    [Pg.11]    [Pg.85]    [Pg.116]    [Pg.197]    [Pg.609]    [Pg.613]    [Pg.661]    [Pg.1137]    [Pg.386]    [Pg.399]    [Pg.355]    [Pg.173]    [Pg.199]    [Pg.265]   
See also in sourсe #XX -- [ Pg.294 , Pg.300 , Pg.301 , Pg.335 ]



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Arenicola cristata

Arenicola marina

Hymenocallis arenicola

Lugworm, Arenicola cristata

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