Myosin polymorphism in urodelan amphibian dorsal skeletal muscle |
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| Institution: | 1. CONICET-Universidad de Buenos Aires, Instituto de Ecología, Genética y Evolución de Buenos Aires. Grupo de Estudios Sobre Biodiversidad en Agroecosistemas, CABA, Argentina;2. COANA, Amphibian Conservation in Argentina, La Plata, Argentina;3. Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, CABA, Argentina;4. CONICET-Universidad Nacional de Misiones, Instituto de Biología Subtropical, Misiones, Argentina;5. Amphibian Survival Alliance, Porto Alegre, Brazil;6. PPG Biologia Animal, Universidade Federal do Rio Grande do Sul, Brasil;7. PPG Ecologia, Universidade Federal do Rio Grande do Sul, Brasil;8. Laboratorio de Sistemática e Historia Natural – Herpetología, Facultad de Ciencias, Universidad de la República, Uruguay;9. División Herpetología, Museo Argentino de Ciencias Naturales “Bernardino Rivadavia”—CONICET y Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, CABA, Argentina;1. European Commission – Joint Research Centre, Institute for Health and Consumer Protection, T.P. 203, Via E. Fermi 2749, 21027 Ispra, VA, Italy;2. Departamento de Biologia & CESAM, Universidade de Aveiro, Aveiro, Portugal;3. Center for Marine Research, Ru?er Bo?kovi? Institute, Giordano Paliage 5, 52210 Rovinj, Croatia;4. Division of Physical Chemistry, Ru?er Bo?kovi? Institute, Bijeni?ka cesta 54, 10000 Zagreb, Croatia |
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| Abstract: | - 1.1. Myosin isoforms were analyzed in the dorsal skeletal muscle of four urodelan amphibian species using a modified pyrophosphate gel electrophoresis which allowed better discrimination than classical methods.
- 2.2. The three fast and the intermediate isomyosins were characterized by a specific heavy chain, respectively HCf and HCi, associated with different combinations of the fast light chains LC1f, LC2f and LC3f.
- 3.3. Slow myosin was characterized by one (P. waltlii, T. palmatus, S. maculata) or two (T. alpestris) isoforms, combining a specific slow myosin heavy chain (HCs) with slow light chains only in the case of P. waltlii, or with slow and fast light chains in the other species.
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