Evolving visual pigments: Hints from the opsin-based proteins in a phylogenetically old \"eyeless\" invertebrate (Articolo in rivista)

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  • Evolving visual pigments: Hints from the opsin-based proteins in a phylogenetically old \"eyeless\" invertebrate (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.biosystems.2006.03.008 (literal)
Alternative label
  • Santillo S.; Orlando P.; De Petrocellis L.; Cristino L.; Guglielmotti V.; Musio C. (2006)
    Evolving visual pigments: Hints from the opsin-based proteins in a phylogenetically old "eyeless" invertebrate
    in Biosystems (Amst. Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Santillo S.; Orlando P.; De Petrocellis L.; Cristino L.; Guglielmotti V.; Musio C. (literal)
Pagina inizio
  • 3 (literal)
Pagina fine
  • 17 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#altreInformazioni
  • Special isuue: Brain, Vision and Artificial Intelligence (BVAi) 2005: Papers from a Symposium on Brain Basics and Natural Vision, Brain, Vision and Intelligence 2005, Naples, Italy, 9-21 October 2005, F. Ventriglia (eds.) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 86 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1-3 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto
  • review con dati preliminari sulla caratterizzazione molecolare e il ruolo nell'evoluzione dei sistemi visivi di proteine fotorecettrici di tipo opsinico nel basso invertebrato Hydra. (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • ICIB-CNR, Pozzuoli IBP-CNR, Napoli (literal)
Titolo
  • Evolving visual pigments: Hints from the opsin-based proteins in a phylogenetically old \"eyeless\" invertebrate (literal)
Abstract
  • Visual pigments are photosensitive receptor proteins that trigger the transduction process producing the visual excitation once they have absorbed photons. In spite of the molecular and morpho-functional complexity that has characterized the development of animal eyes and eyeless photoreceptive systems, opsin-based protein family appears ubiquous along metazoan visual systems. Moreover, in addition to classic rhodopsin photoreceptors, all Metazoa have supplementary non-visual photosensitive structures, mainly located in the central nervous system, that sense light without forming an image and that rather regulate the organism’s temporal physiology. The investigation of novel non-visual photopigments exerting extraretinal photoreception is a challenging field in vision research. Here we propose the cnidarian Hydra as a useful tool of investigation for molecular and functional differences between these pigment families. Hydra is the first metazoan owning a nervous system and it is an eyeless invertebrate showing only an extraocular photoreception, as it has no recognized visual or photosensitive structures. In this paper we provide an overview of the molecular and functional features of the opsin-based protein subfamilies and preliminary evidences in a phylogenetically old species of both image-forming and non-visual opsins. Then we give new insights on the molecular biology of Hydra photoreception and on the evolutionary pathways of visual pigments. (literal)
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