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Auto-Adhesion Potential of Extraocular Aqp0 during Teleost Development

AQP0 water channels are the most abundant proteins expressed in the mammalian lens fiber membranes where they are essential for lens development and transparency. Unlike other aquaporin paralogs, mammalian AQP0 has a low intrinsic water permeability, but can form cell-to-cell junctions between the lens fibers. It is not known whether the adhesive properties of AQP0 is a derived...

Insect glycerol transporters evolved by functional co-option and gene replacement

, SpainFrançois Chauvigné & Joan CerdàInstitute of Evolutionary Biology (CSIC-Universitat Pompeu Fabra), Passeig Marítim 37-49, 08003 Barcelona, SpainXavier Belles AuthorsSearch for Roderick Nigel Finn in:Nature ... competing financial interests. Corresponding authors Correspondence to Roderick Nigel Finn or Joan Cerdà. Supplementary information PDF files1.Supplementary Information Supplementary Figures 1-6 and

The Lineage-Specific Evolution of Aquaporin Gene Clusters Facilitated Tetrapod Terrestrial Adaptation

A major physiological barrier for aquatic organisms adapting to terrestrial life is dessication in the aerial environment. This barrier was nevertheless overcome by the Devonian ancestors of extant Tetrapoda, but the origin of specific molecular mechanisms that solved this water problem remains largely unknown. Here we show that an ancient aquaporin gene cluster evolved...

Dual Neofunctionalization of a Rapidly Evolving Aquaporin-1 Paralog Resulted in Constrained and Relaxed Traits Controlling Channel Function during Meiosis Resumption in Teleosts

The preovulatory hydration of teleost oocytes is a unique process among vertebrates. The hydration mechanism is most pronounced in marine acanthomorph teleosts that spawn pelagic (floating) eggs; however, the molecular pathway for water influx remains poorly understood. Recently, we revealed that whole-genome duplication (WGD) resulted in teleosts harboring the largest repertoire...

Evolution and differential expression of a vertebrate vitellogenin gene cluster

The multiplicity or loss of the vitellogenin (vtg) gene family in vertebrates has been argued to have broad implications for the mode of reproduction (placental or non-placental), cleavage pattern (meroblastic or holoblastic) and character of the egg (pelagic or benthic). Earlier proposals for the existence of three forms of vertebrate vtgs present conflicting models for their...

Vertebrate Vitellogenin Gene Duplication in Relation to the “3R Hypothesis”: Correlation to the Pelagic Egg and the Oceanic Radiation of Teleosts

The spiny ray-finned teleost fishes (Acanthomorpha) are the most successful group of vertebrates in terms of species diversity. Their meteoric radiation and speciation in the oceans during the late Cretaceous and Eocene epoch is unprecedented in vertebrate history, occurring in one third of the time for similar diversity to appear in the birds and mammals. The success of marine...

Genomic and Proteomic Analyses Reveal Non–Neofunctionalized Vitellogenins in a Basal Clupeocephalan, the Atlantic Herring, and Point to the Origin of Maturational Yolk Proteolysis in Marine Teleosts

Oocyte hydration is a unique event in oviparous marine teleosts that provides the single-celled egg with an essential pool of water for survival during early development in the saline oceanic environment. A conserved mechanism of maturational yolk proteolysis of a neofunctionalized vitellogenin (VtgAa) has been shown to underlie the hydration event in all teleosts that spawn...