Site-specific variation in amino acid composition of skate egg capsule (Raja erinacea Mitchell, 1825) |
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| Affiliation: | 1. Pulmonary Division, Department of Medicine, Washington University School of Medicine, St. Louis, MissouriU.S.A.;2. Mount Desert Island Biological Laboratory, Salsbury Cove, Maine, U.S.A.;1. Fisheries and Aquaculture Centre, Institute for Marine and Antarctic Studies, University of Tasmania, 15-21 Nubeena Crescent, Taroona, Tasmania, Australia;2. Fish Ecology and Conservation Physiology Laboratory, Department of Biology and Institute of Environmental Science, Carleton University, 1125 Colonel By Dr., Ottawa, ON, Canada;1. Key Laboratory of Coastal Environmental Processes, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Provincial Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, Shandong 264003, PR China;2. Shandong Hydrobios Resources Conservation and Management Center, Yantai, Shandong 264003, PR China;1. Department of Parasitology and Parasitic Diseases, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăştur 3-5, Cluj-Napoca 400372, Cluj, Romania;2. Department of Internal Medicine, University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, Calea Mănăştur 3-5, Cluj-Napoca 400372, Cluj, Romania;3. Department of Medical Informatics and Biostatistics, “Iuliu Haţieganu” University of Medicine and Pharmacy, Louis Pasteur 6, Cluj-Napoca 400349, Romania;1. Victoria University, Institute for Sustainability & Innovation, Hoppers Crossing, Werribee, Victoria 3030, Australia;2. Institute for Marine and Antarctic Studies, 20 Castray Esplanade, Battery Point, Tasmania 7004, Australia;3. Phillip Island Nature Parks, Research Department, PO Box 97, Cowes, Victoria 3922, Australia;4. RMIT University, School of Applied Science, GPO Box 2476, Melbourne, Victoria, Australia;5. Department of Environmental Management and Ecology, LaTrobe University, Wodonga, Victoria 3689, Australia;1. Department of Ecology and Evolutionary Biology, University of California, 621 Young Drive, South, Los Angeles CA 90095–1606, USA;2. Laboratoire d′Ethologie Experiméntale et Comparée, Université Sorbonne Paris Nord, F-93430 Villetaneuse, France;3. The Rocky Mountain Biological Laboratory, Box 519, Crested Butte, CO 81224, USA;4. CAS Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | In skate (Raja erinacea Mitchell, 1825) egg capsule, variations in amino acid composition, notably glycine and hydroxyproline, were found to be related to morphologically distinct sites. Components sharing elution characteristics with cross-linking amino acids in collagen and elastin were detected and the relative amounts of these peaks also displayed regional variation. If the skate egg capsule contains collagen, these results suggest it is associated with differing amounts of other protein(s). The varying relative proportions of collagen and non-collagenous protein is predicted to contribute to site-specific differences in physico-chemical properties of the egg capsules. |
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