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Metallothionein-like proteins in the livers of squaloid and carcharhinid sharks |
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| Authors: | Graham A Bonwick Philip Vas Peter R Fielden and John D M Gordon |
| Institution: | ? Department of Biological Sciences, University of Salford, Salford M5 4WT, UK ? South-East Fisheries Center, Miami Laboratory, NOAA/NMFS, 75 Virginia Beach Drive, Miami, FL 33149, USA § Department of Instrumentation and Analytical Science, University of Manchester Institute of Science and Technology, Manchester M60 1QD, UK d Scottish Marine Biological Association, Dunstaffnage Marine Research Laboratory, PO Box 3, Oban, Argyll PA34 4AD, Scotland |
| Abstract: | Liver extracts from three species of shark (Etmopterus spinax, Galeorhinus galeus, Scymnorhinus licha), were analysed using Differential Pulse Polarography. All three extracts gave significant polarographic responses, indicating the presence of cysteine containing proteins. On the basis of previous work, these proteins were considered to be metallothionein-like in nature. These results mark the first data on MT in natural populations of sharks and in mid- to deep-water species. |
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