Results 121 to 130 of about 92,026 (241)

Multi‐Omics Analyses Elucidate the Venom Components of the Wasp Vespa mandarinia

open access: yesEcology and Evolution, Volume 16, Issue 6, June 2026.
The wasp Vespa mandarinia was widely reared in Yunnan province. The venom was responsible for their aggressive behavior. Tweety proteases, hyaluronidase, venom dipeptidyl peptidase 4, and phospholipase A1 and A2 isozyme were identified. In addition, organic heterocyclic compounds, organic acids, and derivatives were found.
Yuan‐Chong Shi   +4 more
wiley   +1 more source

Evolutionary Patterns of the Genes Involved in the Integrity and Segregation of Chromosomes in Sawflies (Hymenoptera: Symphyta)

open access: yesEcology and Evolution, Volume 16, Issue 6, June 2026.
This study identifies and characterizes the genes encoding cohesin and condensin complexes across Symphytan superfamilies, revealing their structural and functional roles with conserved motifs in maintaining genome stability. Phylogenetic analyses indicate that SMC genes originated from ancient duplication events, with notable gene loss (e.g., CAPG2 ...
Ayşe Rümeysa Nalça   +1 more
wiley   +1 more source

Sex Determination in Sponges

open access: yesMolecular Reproduction and Development, Volume 93, Issue 6, June 2026.
ABSTRACT Sex determination in Porifera remains one of the least understood aspects of early metazoan biology despite the group's key phylogenetic position. Sponges display exceptional diversity in sexual systems—ranging from stable gonochorism to sequential hermaphroditism and sex reversal—yet lack morphological dimorphism and any discrete gonadal ...
Jose M. Lorente‐Sorolla, Ana Riesgo
wiley   +1 more source

Limb Regeneration in Xenopus laevis Froglet

open access: yesThe Scientific World Journal, 2006
Limb regeneration in amphibians is a representative process of epimorphosis. This type of organ regeneration, in which a mass of undifferentiated cells referred to as the “blastema” proliferate to restore the lost part of the amputated organ, is distinct
Makoto Suzuki   +5 more
doaj   +1 more source

Characterizing the zebrafish organizer: microsurgical analysis at the early-shield stage [PDF]

open access: yes, 1996
The appearance of the embryonic shield, a slight thickening at the leading edge of the blastoderm during the formation of the germ ring, is one of the first signs of dorsoventral polarity in the zebrafish embryo.
Fraser, Scott E., Shih, John
core  

Cryo‐EM structure of ALC1 in an open conformation bound to a PARylated nucleosome

open access: yesActa Crystallographica Section D, Volume 82, Issue 6, Page 683-699, June 2026.
Reanalysis of a publicly available cryo‐EM dataset identifies a new conformation of the oncogenic chromatin remodeler ALC1/CHD1L bound to a PARylated nucleosome. This new structure reveals the position of the macro domain in the complex, and may help to understand the large conformational change leading to the activation of ALC1.Nucleosomes are the ...
Hannah R. Bridges   +3 more
wiley   +1 more source

NPF2 is involved in intracellular pH regulation and ion balance in the diatom Phaeodactylum tricornutum

open access: yesNew Phytologist, Volume 250, Issue 6, Page 3885-3899, June 2026.
Summary Cellular ion and pH homeostasis are crucial factors affecting and regulating metabolic reactions, protein stability, signalling and transport mechanisms. To balance intracellular ion concentrations, organisms need to constantly sense and respond to both the extracellular environment and cell compartments' requests.
Anna Santin   +15 more
wiley   +1 more source

Xwnt-5A: a maternal Wnt that affects morphogenetic movements after overexpression in embryos of Xenopus laevis [PDF]

open access: yes, 1993
To contribute to an understanding of the roles and mechanisms of action of Wnts in early vertebrate development, we have characterized the normal expression of Xenopus laevis Wnt-5A, and investigated the consequences of misexpression of this putative ...
Campbell, Robert M.   +5 more
core  

Functional characterization of a glutamate/aspartate transporter from the mosquito Aedes aegypti [PDF]

open access: yes, 2003
Glutamate elicits a variety of effects in insects, including inhibitory and excitatory signals at both neuromuscular junctions and brain. Insect glutamatergic neurotransmission has been studied in great depth especially from the standpoint of the ...
Cohen, Bruce N.   +3 more
core  

Distribution of tissue progenitors within the shield region of the zebrafish gastrula [PDF]

open access: yes, 1995
The zebrafish has emerged as an important model system for the experimental analysis of vertebrate development because it is amenable to genetic analysis and because its optical clarity allows the movements and the differentiation of individual cells to ...
Fraser, Scott E., Shih, John
core  

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