AMP-deaminase (AMPD, EC 3.5.4.6), which catalyzes the irreversible hydrolytic deamination of AMP to IMP and ammonia, is an important energy-related enzyme. The partial genomic sequence of the gene encoding myoadenylate deaminase (AMPD1) from the teleost fish Platichthys flesus was determined. The amino acid sequence of P. flesus AMPD1 shows 82% homology with that of the teleost fish Danio rerio. Comparison of genomic sequences of P. flesus and Rattus norvegicus reveals a high degree of conservation of both sequence and structural organization. A phylogenetic analysis of AMPD sequences shows that bony fish and mammalian AMPD1s arise by duplication of a common primordial gene.
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http://dx.doi.org/10.1007/s10695-009-9358-y | DOI Listing |
Anim Cells Syst (Seoul)
January 2025
Department of Biological Sciences and Biotechnology, Chungbuk National University, Cheongju, Republic of Korea.
Osmoregulation is essential for the survival of aquatic organisms, particularly teleost fish facing osmotic challenges in environments characterized by variable salinity. While the gills are known for ion exchange, the intestine's role in water and salt absorption is gaining attention. Here, we investigated the adaptive responses of the intestine to salinity stress in guppies (), observing significant morphological and transcriptomic alterations.
View Article and Find Full Text PDFFish Shellfish Immunol
January 2025
School of Marine Science and Engineering, Qingdao Agricultural University, 700 Greatwall Road, Qingdao, Shandong Province, 266109, China. Electronic address:
Tumor necrosis factor receptor-associated factors (TRAFs) act as signal transducers and are critical in many biological processes. However, in contrast to mammals, the function of TRAFs in teleost is still largely unknown. In this study, we identified and cloned eight TRAF genes in snakehead (Channa argus), namely CaTRAF2aa, CaTRAF2ab, CaTRAF2b, CaTRAF3, CaTRAF4a, CaTRAF5, CaTRAF6, and CaTRAF7.
View Article and Find Full Text PDFCurr Biol
January 2025
Department of Molecular and Cellular Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA. Electronic address:
Identifying new organisms that allow linking brain-wide circuit dynamics to complex adaptive behaviors is an ongoing challenge. A new study has demonstrated that Danionella cerebrum - a miniature teleost fish - is capable of multimodal sensory discrimination and displays oxytocin-dependent social interaction, thus opening the way for a wide range of detailed circuit investigations.
View Article and Find Full Text PDFActa Parasitol
January 2025
Departamento de Parasitologia Animal, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, 23897-000, Brazil.
Introduction: Copepods of the genus Colobomatus Hesse, 1873 are parasites associated with subcutaneous spaces of marine fish. To date, around 76 species of the genus have been described in marine ecosystems, but few species have been recorded in the South Atlantic Ocean.
Methods: One hundred and eight specimens of Co.
J Exp Zool A Ecol Integr Physiol
January 2025
Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Emilia-Romagna, Italy.
In the wild, stressors occur with varying likelihood throughout the day, leading animals to evolve plastic stress responses that exhibit circadian rhythmicity. In mammals, studies have revealed that the circadian plasticity of stress response may differ with age. However, such developmental effects have been largely overlooked in other vertebrate groups.
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