Results 51 to 60 of about 2,460 (178)

Review: The evolution of peptidergic signaling in Cnidaria and Placozoa, including a comparison with Bilateria

open access: yesFrontiers in Endocrinology, 2022
Bilateria have bilateral symmetry and are subdivided into Deuterostomia (animals like vertebrates) and Protostomia (animals like insects and mollusks).
Frank Hauser   +3 more
doaj   +1 more source

A pre-metazoan origin of the CRK gene family and co-opted signaling network. [PDF]

open access: yes, 2016
CRK and CRKL adapter proteins play essential roles in development and cancer through their SRC homology 2 and 3 (SH2 and SH3) domains. To gain insight into the origin of their shared functions, we have investigated their evolutionary history.
Akira IMAMOTO   +25 more
core   +2 more sources

Comparative genomics of large mitochondria in placozoans.

open access: yesPLoS Genetics, 2007
The first sequenced mitochondrial genome of a placozoan, Trichoplax adhaerens, challenged the conventional wisdom that a compact mitochondrial genome is a common feature among all animals.
Ana Y Signorovitch   +2 more
doaj   +1 more source

Comparative genomics of neuroglobin reveals its early origins. [PDF]

open access: yesPLoS ONE, 2012
Neuroglobin (Ngb) is a hexacoordinated globin expressed mainly in the central and peripheral nervous system of vertebrates. Although several hypotheses have been put forward regarding the role of neuroglobin, its definite function remains uncertain.
Jasmin Dröge   +3 more
doaj   +1 more source

Getting Nervous: An Evolutionary Overhaul for Communication. [PDF]

open access: yes, 2017
The evolution of a nervous system as a control system of the body's functions is a key innovation of animals. Its fundamental units are neurons, highly specialized cells dedicated to fast cell-cell communication.
Fasshauer, D., Varoqueaux, F.
core   +3 more sources

Concatenated analysis sheds light on early metazoan evolution and fuels a modern "urmetazoon" hypothesis. [PDF]

open access: yesPLoS Biology, 2009
For more than a century, the origin of metazoan animals has been debated. One aspect of this debate has been centered on what the hypothetical "urmetazoon" bauplan might have been.
Bernd Schierwater   +7 more
doaj   +1 more source

Evolutionary origin of synapses and neurons – Bridging the gap [PDF]

open access: yes, 2017
The evolutionary origin of synapses and neurons is an enigmatic subject that inspires much debate. Non-bilaterian metazoans, both with and without neurons and their closest relatives already contain many components of the molecular toolkits for ...
Alberstein   +109 more
core   +3 more sources

Early evolution of the LIM homeobox gene family

open access: yesBMC Biology, 2010
Background LIM homeobox (Lhx) transcription factors are unique to the animal lineage and have patterning roles during embryonic development in flies, nematodes and vertebrates, with a conserved role in specifying neuronal identity.
Degnan Bernard M   +6 more
doaj   +1 more source

Two intracellular and cell type-specific bacterial symbionts in the placozoan Trichoplax H2

open access: yes, 2019
Placozoa is an enigmatic phylum of simple, microscopic, marine metazoans(1,2). Although intracellular bacteria have been found in all members of this phylum, almost nothing is known about their identity, location and interactions with their host(3-6). We
Dubilier, N.   +7 more
core   +1 more source

Phylogenetic position of Placozoa based on large subunit (LSU) and small subunit (SSU) rRNA genes

open access: yesGenetics and Molecular Biology, 2007
The phylum Placozoa, represented by its single species Trichoplax adhaerens, has always been considered one of the most basal animal clades due to its low morphological complexity.
Fernanda Britto da Silva   +2 more
doaj   +1 more source

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