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Arseno-sugars from brown kelp (Ecklonia radiata) as intermediates in cycling of Arsenic in a marine ecosystem

Journal Article:

Abstract

The high concentration (relative to seawater) of arsenic in many marine animals eaten as human food has stimulated interest in the cycling of arsenic in the marine environment. Although arsenic is present in arsenobetaine ((CH/sub 3/)/sub 3/As/sup +/CH/sub 2/COO/sup -/) in the wester rock lobster (Panulirus cygnus), the dusky shark (Carcharhinus obscurus) and the school whiting (Sillago bassensis) it is not clear what intermediate stages are involved in the biosynthesis of this compound from arsenate, the major form of arsnenic in seawater. We now report the isolation of the two main arsenical constituents of the brown kelp, Ecklonia radiata, and their identification as a 2-hydroxy-3-sulphopropyl-5-deoxy-5-(dimethylarsenoso)furanoside and a 2,3-dihydroxypropyl-5-deoxy-5-(dimethylarsenoso)furanoside. A ..beta..-ribo structure for the sugar system is strongly indicated in each case. Ecklonia is the major organisms that concentrates arsenic in the coastal ecosystem to which the western rock lobster and school whiting belong. It is clear that the compounds described here could readily be further metabolized to arsenobetaine and may well be the source of arsenobetaine in marine fauna associated with the region.
Publication Date:
Feb 12, 1981
Product Type:
Journal Article
Reference Number:
EDB-81-106662
Resource Relation:
Journal Name: Nature (London); (United Kingdom); Journal Volume: 289
Subject:
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; ARSENIC; METABOLISM; SACCHARIDES; BIOSYNTHESIS; SEAWEEDS; QUANTITATIVE CHEMICAL ANALYSIS; AQUATIC ECOSYSTEMS; BUILDUP; COASTAL WATERS; CRUSTACEANS; FISHES; FOOD CHAINS; MOLECULAR STRUCTURE; QUANTITY RATIO; SEAWATER; SEDIMENTS; TABLES; UPTAKE; ANIMALS; AQUATIC ORGANISMS; ARTHROPODS; CARBOHYDRATES; CHEMICAL ANALYSIS; ECOSYSTEMS; ELEMENTS; HYDROGEN COMPOUNDS; INVERTEBRATES; ORGANIC COMPOUNDS; OXYGEN COMPOUNDS; PLANTS; SEMIMETALS; SURFACE WATERS; SYNTHESIS; VERTEBRATES; WATER; 560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)
OSTI ID:
6119472
Research Organizations:
Western Australian Marine Research Labs., North Beach
Country of Origin:
United Kingdom
Language:
English
Other Identifying Numbers:
Journal ID: CODEN: NATUA
Submitting Site:
TIC
Size:
Pages: 602-604
Announcement Date:

Journal Article:

Citation Formats

Edmonds, J S, and Francesconi, K A. Arseno-sugars from brown kelp (Ecklonia radiata) as intermediates in cycling of Arsenic in a marine ecosystem. United Kingdom: N. p., 1981. Web. doi:10.1038/289602a0.
Edmonds, J S, & Francesconi, K A. Arseno-sugars from brown kelp (Ecklonia radiata) as intermediates in cycling of Arsenic in a marine ecosystem. United Kingdom. doi:10.1038/289602a0.
Edmonds, J S, and Francesconi, K A. 1981. "Arseno-sugars from brown kelp (Ecklonia radiata) as intermediates in cycling of Arsenic in a marine ecosystem." United Kingdom. doi:10.1038/289602a0. https://www.osti.gov/servlets/purl/10.1038/289602a0.
@misc{etde_6119472,
title = {Arseno-sugars from brown kelp (Ecklonia radiata) as intermediates in cycling of Arsenic in a marine ecosystem}
author = {Edmonds, J S, and Francesconi, K A}
abstractNote = {The high concentration (relative to seawater) of arsenic in many marine animals eaten as human food has stimulated interest in the cycling of arsenic in the marine environment. Although arsenic is present in arsenobetaine ((CH/sub 3/)/sub 3/As/sup +/CH/sub 2/COO/sup -/) in the wester rock lobster (Panulirus cygnus), the dusky shark (Carcharhinus obscurus) and the school whiting (Sillago bassensis) it is not clear what intermediate stages are involved in the biosynthesis of this compound from arsenate, the major form of arsnenic in seawater. We now report the isolation of the two main arsenical constituents of the brown kelp, Ecklonia radiata, and their identification as a 2-hydroxy-3-sulphopropyl-5-deoxy-5-(dimethylarsenoso)furanoside and a 2,3-dihydroxypropyl-5-deoxy-5-(dimethylarsenoso)furanoside. A ..beta..-ribo structure for the sugar system is strongly indicated in each case. Ecklonia is the major organisms that concentrates arsenic in the coastal ecosystem to which the western rock lobster and school whiting belong. It is clear that the compounds described here could readily be further metabolized to arsenobetaine and may well be the source of arsenobetaine in marine fauna associated with the region.}
doi = {10.1038/289602a0}
journal = {Nature (London); (United Kingdom)}
volume = {289}
journal type = {AC}
place = {United Kingdom}
year = {1981}
month = {Feb}
}