Results 41 to 50 of about 131 (116)

Early evolution of the LIM homeobox gene family

BMC 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, Chapman Jarrod, Mohanty Kareshma, Lu Daniel R, Larroux Claire, Srivastava Mansi, Rokhsar Daniel S   +6 more
doaj   +1 more source

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

Genetics 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, Valéria C. Muschner, Sandro L. Bonatto   +2 more
doaj   +1 more source

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

PLoS 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, Vsevolod V Gurevich, Eugenia V Gurevich   +2 more
doaj   +1 more source

The cobalamin processing enzyme of Trichoplax adhaerens

Journal of Biological Chemistry
Cobalamin (Cbl) is an essential cofactor for methionine synthase and methylmalonyl-CoA mutase, but it must first undergo chemical processing for utilization in animals. In humans, this processing comprises β-axial ligand cleavage and Cbl reduction and is performed by the enzyme MMACHC (HsCblC).
Caroline Krams, Anna J. Esser, Melissa Klenzendorf, Katharina Klotz, Ute Spiekerkoetter, Donald W. Jacobsen, Clyde A. Smith, Ailiena O. Maggiolo, Luciana Hannibal   +8 more
openaire   +3 more sources

Neuropeptidergic integration of behavior in Trichoplax adhaerens, an animal without synapses

Journal of Experimental Biology, 2017
ABSTRACT Trichoplax adhaerens is a flat, millimeter-sized marine animal that adheres to surfaces and grazes on algae. Trichoplax displays a repertoire of different feeding behaviors despite the apparent absence of a true nervous system with electrical or chemical synapses. It glides along surfaces to find food, propelled by beating cilia
Adriano Senatore, Thomas S. Reese, Carolyn L. Smith   +2 more
openaire   +2 more sources

Global diversity of the Placozoa.

PLoS 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, Hans-Jürgen Osigus, Rob DeSalle, Bernd Schierwater   +3 more
doaj   +1 more source

ParaHox Genes Revisited: From Gut Patterning to Integrated Axial and Neural Organization in Rotifera

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, Volume 346, Issue 4, Page 357-369, June 2026.
In rotifers, ParaHox genes show a dispersed genomic organization, with Xlox absent across gnathiferans. Exclusive neuronal expression of Gsx and Cdx reveals that ancestral ParaHox genes coordinated neural and epithelial development beyond gut patterning, suggesting an integrated role in early bilaterian body plan organization.
Andreas C. Fröbius, David B. Mark Welch, Holger Herlyn   +2 more
wiley   +1 more source

DNA Content and Fragmentation of the Egg Nucleus of Trichoplax adhaerens

Zeitschrift für Naturforschung C, 1981
Abstract Under culture conditions the egg nucleus of Trichoplax adhaerens reaches an unusually high and variable DNA content. Before the "fertilization membrane" is formed, the nucleus undergoes fragmentation. It is assumed that culture conditions differ from natural conditions by preventing the switch-over from the S-phase to the G 2 ...
A. Ruthmann, K. G. Grell, G. Benwitz
openaire   +1 more source

Why Homoscleromorph Sponges Have Ciliated Epithelia: Evidence for an Ancestral Role in Mucociliary Driven Particle Flux

Journal of Experimental Zoology Part B: Molecular and Developmental Evolution, Volume 344, Issue 8, Page 505-516, December 2025.
Epithelia are typically ciliated, except in sponges. Of all Porifera only Homoscleromorphs have motile cilia on their epithelia. Our data highlight the presence of cilia and mucociliary particle transport as a common feature of metazoa and a secondary loss in other sponge lineages.
Veronica L. Price, Anudi Nanayakkara, Andrea Pasini, Elsa Bazellières, Amelie Vernale, Caroline Rocher, Carole Borchiellini, Andre Le Bivic, Emmanuelle Renard, Sally P. Leys   +9 more
wiley   +1 more source

The ventral epithelium of Trichoplax adhaerens deploys in distinct patterns cells that secrete digestive enzymes, mucus or diverse neuropeptides

Biology Open, 2019
The disk-shaped millimeter-sized marine animal, Trichoplax adhaerens, is notable because of its small number of cell types and primitive mode of feeding.
Tatiana D. Mayorova, Katherine Hammar, Christine A. Winters, Thomas S. Reese, Carolyn L. Smith   +4 more
doaj   +1 more source