Results 1 to 10 of about 3,793 (125)

Are Melanocortin Receptors Present in Extant Protochordates? [PDF]

open access: yesBiomolecules
Functional melanocortin receptor (MCR) genes have been identified in the genomes of early chordates, e.g., the cyclostomata. Whether they appear in the most ancient chordates such as cephalochordate and urochordata, however, remains unclear due to ...
Ren-Lei Ji   +4 more
doaj   +2 more sources

Integrated multi-approaches reveal unique metabolic mechanisms of Vestimentifera to adapt to deep sea [PDF]

open access: yesMicrobiome
Background Vestimentiferan tubeworms are deep-sea colonizers, in which chemoautotrophic symbiosis was first observed. These animals are gutless and depend on endosymbiotic bacteria for organic compound synthesis and nutrition supply.
Qinglei Sun   +3 more
doaj   +2 more sources

Apendicularias (Urochordata) y quetognatos (Chaetognatha) del Parque Nacional Isla del Coco, Costa Rica Appendicularians (Urochordata) and chaetognaths (Chaetognatha) of Isla del Coco National Park, Costa Rica

open access: yesRevista de Biología Tropical, 2012
Las apendicularias y quetognatos son miembros importantes del zooplancton pero poco estudiados en Costa Rica y no del todo en el Parque Nacional Isla del Coco, Pacífico tropical este.
Iván Castellanos-Osorio   +3 more
doaj   +2 more sources

Diversity of marine plankton in coral reef ecosystems at Gosong Island, Southwest Aceh [PDF]

open access: yesE3S Web of Conferences, 2022
Plankton is a fundamental part of the waters, especially in coral reef ecosystems. This study aims to determine the abundance and diversity of plankton species, both phytoplankton, and zooplankton in the waters of Gosong Island, Southwest Aceh.
Najmi Nurul   +3 more
doaj   +1 more source

3D reconstruction of structures of hatched larva and young juvenile of the larvacean Oikopleura dioica using SBF-SEM

open access: yesScientific Reports, 2021
The larvacean Oikopleura dioica is a planktonic chordate and an emerging model organism with a short life cycle of 5 days that belongs toTunicata (Urochordata), the sister clade of vertebrates.
Hiroki Nishida   +3 more
doaj   +1 more source

Origin of the Chordate Notochord

open access: yesDiversity, 2021
The phylum of Chordata is defined based on the discovery of a coelom-like dorsal notochord in ascidian and amphioxus embryos. Chordata can be classified into three subphylums, Cephalochordata, Urochordata, and Vertebrata, united by the presence of a ...
Zihao Sui, Zhihan Zhao, Bo Dong
doaj   +1 more source

Molecular evolution and functional divergence of the Ca(2+) sensor protein in store-operated Ca(2+) entry: stromal interaction molecule. [PDF]

open access: yesPLoS ONE, 2007
Receptor-mediated Ca(2+) signaling in many non-excitable cells initially induces Ca(2+) release from intracellular Ca(2+) stores, followed by Ca(2+) influx across the plasma membrane.
Xinjiang Cai
doaj   +1 more source

The phylum Vertebrata: a case for zoological recognition

open access: yesZoological Letters, 2018
The group Vertebrata is currently placed as a subphylum in the phylum Chordata, together with two other subphyla, Cephalochordata (lancelets) and Urochordata (ascidians). The past three decades, have seen extraordinary advances in zoological taxonomy and
Naoki Irie   +2 more
doaj   +1 more source

Pannexin1 channel proteins in the zebrafish retina have shared and unique properties. [PDF]

open access: yesPLoS ONE, 2013
In mammals, a single pannexin1 gene (Panx1) is widely expressed in the CNS including the inner and outer retinae, forming large-pore voltage-gated membrane channels, which are involved in calcium and ATP signaling.
Sarah Kurtenbach   +7 more
doaj   +1 more source

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