Results 51 to 60 of about 1,730 (164)

Global diversity of the Placozoa.

open access: yesPLoS ONE, 2013
The enigmatic animal phylum Placozoa holds a key position in the metazoan Tree of Life. A simple bauplan makes it appear to be the most basal metazoan known and genetic evidence also points to a position close to the last common metazoan ancestor ...
Michael Eitel   +3 more
doaj   +1 more source

Beyond the Secretory Pathway: New Insights Into Protein Release

open access: yesTraffic, Volume 26, Issue 10-12, October/December 2025.
While proteins bearing N‐terminal signal or leader sequences are secreted via the ER‐Golgi‐plasma membrane axis of the conventional secretion pathway, many cytosolic proteins lacking signaling sequence can be secreted via poorly defined mechanisms termed Unconventional Protein Secretion (UcPS).
Ruey‐Hwa Chen   +34 more
wiley   +1 more source

The placozoan Trichoplax

open access: yesNature Methods
After having been largely neglected for more than a century, the tiny marine animal Trichoplax adhaerens is enjoying a revival and is now poised to become a mainstream model organism for the study of epithelial evolution, diversification and specialization.
Leria, Marvin   +3 more
openaire   +2 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

Invertebrate Bile Acid‐Sensitive Ion Channels and Their Emergence in Bilateria

open access: yesThe FASEB Journal, Volume 39, Issue 8, 30 April 2025.
This graphical abstract presents the evolutionary distribution and functional characteristics of bile acid‐sensing ion channels (BASICs) across bilaterians. A phylogenetic tree illustrates the presence of BASICs in diverse groups, extending beyond previously established mammalian findings.
Josep Martí‐Solans   +4 more
wiley   +1 more source

Domain‐Shuffling in the Evolution of Cyclostomes and Gnathostomes

open access: yesJournal of Experimental Zoology Part B: Molecular and Developmental Evolution, Volume 344, Issue 2, Page 59-79, March 2025.
We addressed the potential roles of domain‐shuffling origin genes (DSO‐Gs) in the evolution of early vertebrates. Through comparative genome analysis of 22 metazoans, including four cyclostomes, we identified DSO‐Gs before and after the divergence of cyclostomes and gnathostomes, and suggest domain shuffling as a key mechanism in vertebrate early ...
Hirofumi Kariyayama   +3 more
wiley   +1 more source

Studying Placozoa WBR in the Simplest Metazoan Animal, Trichoplax adhaerens

open access: yes, 2022
AbstractPlacozoans are a promising model system to study fundamental regeneration processes in a morphologically and genetically very simple animal. We here provide a brief introduction to the enigmatic Placozoa and summarize the state of the art of animal handling and experimental manipulation possibilities.
Hans-Jürgen Osigus   +7 more
openaire   +2 more sources

Developmental gene expression in the eyes of the pygmy squid Xipholeptos notoides

open access: yesJournal of Experimental Zoology Part B: Molecular and Developmental Evolution, Volume 342, Issue 7, Page 483-498, November 2024.
In the cephalopod Xipholeptos notoides, the photosensitive pigment encoding genes Rhodopsin, Xenopsin, and Retinochrome, as well as two Reflectin genes are expressed in the olfactory organ. This suggests that either opsins may not only be involved in photoreception or the olfactory organ is involved in photoreception.
David Koller   +3 more
wiley   +1 more source

Evolution of the Cdk4/6–Cdkn2 system in invertebrates

open access: yesGenes to Cells, Volume 29, Issue 11, Page 1037-1051, November 2024.
Hypothesis on the evolution of the Cdkn2 locus. (a) Loss of Cdkn2 occurred multiple times. (b) Evolution of microsynteny at the Cdkn2 locus. Cdkn2e is a hypothetical transient gene. Abstract The cell cycle is driven by cyclin‐dependent kinases (Cdks). The decision whether the cell cycle proceeds is made during G1 phase, when Cdk4/6 functions.
Shiori Yuki   +5 more
wiley   +1 more source

The origin and evolution of G protein-coupled receptor kinases. [PDF]

open access: yesPLoS ONE, 2012
G protein-coupled receptor (GPCR) kinases (GRKs) play key role in homologous desensitization of GPCRs. GRKs phosphorylate activated receptors, promoting high affinity binding of arrestins, which precludes G protein coupling.
Arcady Mushegian   +2 more
doaj   +1 more source

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