Results 91 to 100 of about 19,199 (194)

Concretions in the Pyloric Gland of Ciona intestinalis [PDF]

Nature, 1949
THE pyloric gland has long been known to exist in ascidians and is recognized to be of general occurrence in the tunicates with the exception of the Larvacea, but its function has not been determined with certainty. The organ usually forms a system of branching and anastomosing tubules enveloping the rectum and part of the intestine, and opening into ...
openaire   +2 more sources

Molecular Evolution and Gene Diversity of Dermatan Sulfate Sulfotransferases in Ascidians

Proteoglycan Research, Volume 3, Issue 4, October 2025.
ABSTRACT Ascidians (Chordata, Tunicata) are model organisms for studying molecules, particularly sulfated glycosaminoglycans (GAGs), due to their phylogenetic proximity to vertebrates and unique GAG variants. Over‐sulfated dermatan sulfate (DS) contributes to proteoglycan diversity and cellular processes in metazoans.
Vanessa de Sousa Rizzo‐Valente, Mauro S. G. Pavão   +1 more
wiley   +1 more source

A genomic overview of short genetic variations in a basal chordate, Ciona intestinalis

BMC Genomics, 2012
Background Although the Ciona intestinalis genome contains many allelic polymorphisms, there is only limited data analyzed systematically. Establishing a dense map of genetic variations in C.
Satou Yutaka, Shin-i Tadasu, Kohara Yuji, Satoh Nori, Chiba Shota   +4 more
doaj   +1 more source

Biofouling reduction by lantern nets exchange and its relationship with production and survival of Argopecten purpuratus in Samanco Bay, Peru

Journal of the World Aquaculture Society, Volume 56, Issue 5, October 2025.
Abstract The aquaculture of Argopecten purpuratus (Peruvian scallop) is a profitable activity with positive impacts on the local economy. However, the development of biofouling on the culture lantern nets generates negative environmental impacts that affect its sustainability.
Rómulo E. Loayza‐Aguilar, Guillermo B. Saldaña‐Rojas, Fernando Merino, Gustavo E. Olivos‐Ramirez   +3 more
wiley   +1 more source

The repertoire of G protein-coupled receptors in the sea squirt Ciona intestinalis

BMC Evolutionary Biology, 2008
Background G protein-coupled receptors (GPCRs) constitute a large family of integral transmembrane receptor proteins that play a central role in signal transduction in eukaryotes. The genome of the protochordate Ciona intestinalis has a compact size with
Manoj Narayanan, Aradhyam Gopala K, Kamesh N   +2 more
doaj   +1 more source

Applying Deep Learning to Quantify Drivers of Long‐Term Ecological Change in a Swedish Marine Protected Area

Ecology and Evolution, Volume 15, Issue 9, September 2025.
We applied an object‐detection model to archived videos from 1997‐2023 of a submarine rock wall in a Swedish marine protected area. We modeled depth distributions and abundance trends of 17 invertebrate taxa. Most taxa resided at deeper wall sections and abundance trends were generally positive, but heat sensitivity was associated with population ...
Christian L. Nilsson, Søren Faurby, Emil Burman, Jurie Germishuys, Matthias Obst   +4 more
wiley   +1 more source

Re‐evaluation of PTEN as an ADP‐ribosylated tankyrase binding partner

The FEBS Journal, Volume 292, Issue 17, Page 4611-4630, September 2025.
We reveal that PTEN and its conserved putative tankyrase‐binding motif (pTBM) originated before tankyrases in evolution. We demonstrate that the pTBM shows no binding to tankyrase ARC domains, but it has structural and functional roles. We show, using recombinant proteins, that PTEN is not a tankyrase binding partner and substrate, and that catalytic ...
Chiara Bosetti, Albert Galera‐Prat, Anette Schmidt, Johan Pääkkönen, Aki Manninen, Lari Lehtiö   +5 more
wiley   +1 more source

Cholecystokinin: Clinical aspects of the new biology

Journal of Internal Medicine, Volume 298, Issue 3, Page 251-267, September 2025.
Abstract Cholecystokinin (CCK) is a classic gut hormone that has been known for almost a century to regulate gallbladder emptying, pancreatic enzyme secretion, and gastrointestinal motor activity. In 1968, the CCK structure was identified by Viktor Mutt and Erik Jorpes from porcine gut extracts as a peptide of 33 amino acid residues.
Jens F. Rehfeld
wiley   +1 more source

A basal chordate model for studies of gut microbial immune interactions

Frontiers in Immunology, 2012
Complex symbiotic interactions at the surface of host epithelia govern most encounters between host and microbe. The epithelium of the gut is a physiologically ancient structure that is comprised of a single layer of cells and is thought to possess fully
Larry J. Dishaw, Jaime A. Flores-Torres, M. Gail eMueller, Charlotte eKarrer, Diana P. Skapura, Daniela eMelillo, Ivana eZucchetti, Rosaria eDe Santis, Maria Rosaria ePinto, Gary W Litman   +9 more
doaj   +1 more source

The integrins of the urochordate Ciona intestinalis provide novel insights into the molecular evolution of the vertebrate integrin family

BMC Evolutionary Biology, 2005
Background Integrins are a functionally significant family of metazoan cell surface adhesion receptors. The receptors are dimers composed of an alpha and a beta chain.
Robertson David L, Humphries Martin J, Mould A Paul, Ewan Richard, Huxley-Jones Julie, Boot-Handford Raymond P   +5 more
doaj   +1 more source