The cytoskeleton of the electric tissue of Electrophorus electricus, L.
The electric eel Electrophorus electricus is a fresh water teleost showing an electrogenic tissue that produces electric discharges. This electrogenic tissue is distributed in three well-defined electric organs which may be found symmetrically along both sides of the eel. These electric organs develop from muscle and exhibit several biochemical properties and morphological features of the muscle sarcolema. This review examines the contribution of the cytoskeletal meshwork to the maintenance of the polarized organization of the electrocyte, the cell that contains all electric properties of each electric organ. The cytoskeletal filaments display an important role in the establishment and maintenance of the highly specialized membrane model system of the electrocyte. As a muscular tissue, these electric organs expresses actin and desmin. The studies that characterized these cytoskeletal proteins and their implications on the electrophysiology of the electric tissues are revisited.
Mermelstein
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CD
Departamento de Histologia e Embriologia, Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, 21949-590, Brazil.
Costa
M L
ML
Moura Neto
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V
D008841:Actin Cytoskeleton / Q000737:chemistry / Q000502:physiology / Q000648:ultrastructure; D000818:Animals; D003599:Cytoskeleton / Q000737:chemistry* / Q000378:metabolism / Q000648:ultrastructure; D003720:Densitometry; D004557:Electric Organ / Q000737:chemistry* / Q000502:physiology / Q000648:ultrastructure; D015180:Electrophoresis, Gel, Two-Dimensional; D004593:Electrophorus / Q000033:anatomy & histology* / Q000502:physiology; D008854:Microscopy, Electron