Results 41 to 50 of about 14,060 (164)

GCN5a is a telomeric lysine acetyltransferase whose loss primes Toxoplasma gondii for latency

open access: yesmSphere
Toxoplasma gondii is a protozoan parasite that causes persistent infection in warm-blooded vertebrates by undergoing differentiation from a replicative stage (tachyzoites) to a latent encysted stage (bradyzoites).
Vishakha Dey   +4 more
doaj   +1 more source

Essential function of the alveolin network in the subpellicular microtubules and conoid assembly in Toxoplasma gondii

open access: yeseLife, 2020
The coccidian subgroup of Apicomplexa possesses an apical complex harboring a conoid, made of unique tubulin polymer fibers. This enigmatic organelle extrudes in extracellular invasive parasites and is associated to the apical polar ring (APR).
Nicolò Tosetti   +7 more
doaj   +1 more source

First Detection of Cytauxzoon spp. DNA in Questing Ixodes ricinus Ticks

open access: yesMicroorganisms
Feline cytauxzoonosis is an emerging tick-borne disease in Europe. While infections have been reported in different European countries, the tick vector remains unknown. This study investigated 665 ticks collected in 2019 (n = 160), 2022 (n = 7), and 2024
Marina L. Meli   +6 more
doaj   +1 more source

Divergent polyamine metabolism in the Apicomplexa [PDF]

open access: yesMicrobiology, 2007
The lead enzymes of polyamine biosynthesis, i.e. ornithine decarboxylase (ODC) and arginine decarboxylase (ADC), were not detected in Toxoplasma gondii [the limit of detection for ODC and ADC was 5 pmol min(-1) (mg protein)(-1)], indicating that T. gondii lacks a forward-directed polyamine biosynthetic pathway, and is therefore a polyamine auxotroph ...
Tuesday, Cook   +7 more
openaire   +2 more sources

Evolutionary divergence and functional insights into the heteromeric cis‐prenyltransferase of Paramecium tetraurelia

open access: yesThe FEBS Journal, Volume 293, Issue 6, Page 1681-1707, March 2026.
Heteromeric cis‐prenyltransferases (CPT) are indispensable for dolichol synthesis and protein N‐glycosylation in most eukaryotes. The catalytic subunits are strongly conserved throughout evolution, in contrast to the evolutionarily variable accessory subunits. The POC1 protein from Paramecium tetraurelia is the smallest identified CPT‐accessory subunit
Agnieszka Onysk   +8 more
wiley   +1 more source

Simultaneous Ribosome Profiling of Human Host Cells Infected with Toxoplasma gondii

open access: yesmSphere, 2019
Toxoplasma gondii is a ubiquitous obligate intracellular parasite that infects the nucleated cells of warm-blooded animals. From within the parasitophorous vacuole in which they reside, Toxoplasma tachyzoites secrete an arsenal of effector proteins that ...
Michael J. Holmes   +3 more
doaj   +1 more source

Insights into the Cell Division of Neospora caninum

open access: yesMicroorganisms, 2023
Neospora caninum is an apicomplexan protozoan parasite responsible for causing neosporosis in a range of animal species. It results in substantial economic losses in the livestock industry and poses significant health risks to companion and wild animals.
Ramiro Tomasina   +4 more
doaj   +1 more source

Freshwater and Sediment Host Distinct Yet Overlapping Microeukaryotic Communities, With Sediment Communities Less Impacted by Treated Wastewater

open access: yesJournal of Eukaryotic Microbiology, Volume 73, Issue 2, March/April 2026.
ABSTRACT Freshwater and sediment environments host diverse microeukaryotic communities that differ in structure and composition, yet exhibit taxonomic overlap. Using 18S V9 rRNA gene sequencing, we compared communities from these habitats in controlled 10‐day mesocosm experiments, examining diversity, overlap, and responses to treated wastewater (TWW).
Radtke Kim   +3 more
wiley   +1 more source

A myzozoan-specific protein is an essential membrane-anchoring component of the succinate dehydrogenase complex in Toxoplasma parasites

open access: yesOpen Biology
Succinate dehydrogenase (SDH) is a protein complex that functions in the tricarboxylic acid cycle and the electron transport chain of mitochondria. In most eukaryotes, SDH is highly conserved and comprises the following four subunits: SdhA and SdhB form ...
Soraya M. Zwahlen   +4 more
doaj   +1 more source

Risk Factors and Coinfection Dynamics of Pathogens in Wild Turkeys (Meleagris gallopavo) From Pennsylvania, USA

open access: yesEcology and Evolution, Volume 16, Issue 2, February 2026.
We determined the associations and risk factors of infection by lymphoproliferative disease virus (LPDV), reticuloendotheliosis virus (REV), three avian Mycoplasma species, and internal parasites in Pennsylvania wild turkeys (Meleagris gallopavo). Active surveillance of parasites and pathogens was conducted over four years and four regions across ...
Ryan W. Koch   +24 more
wiley   +1 more source

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