ArticlePLoS pathogens2015
Phosphorylation of a Myosin Motor by TgCDPK3 Facilitates Rapid Initiation of Motility during Toxoplasma gondii egress.
Article in PLoS pathogens, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
55 citing papers in PubMed, 90 citations in OpenAlex.
- The cell cycle-regulated cytoplasmic kinase, TgCRCK1, is required for efficient propagation of human protozoan pathogen,Microbiology spectrum · 2026Article
- Atomic models of the Toxoplasma cell invasion machinery.Nature structural & molecular biology · 2026Article
- Article
- Functional dissection of prenyltransferases reveals roles in endocytosis and secretory vacuolar sorting in type 2-ME49 strain ofVirulence · 2024Article
- Kinase function of TgTKL1 is essential for its role inmSphere · 2024Article
- Calcium-binding protein TgpCaBP regulates calcium storage of the zoonotic parasiteMicrobiology spectrum · 2024Article
- Myosin A and F-Actin play a critical role in mitochondrial dynamics and inheritance in Toxoplasma gondii.PLoS pathogens · 2024Article
- Proteomic approaches for protein kinase substrate identification in Apicomplexa.Molecular and biochemical parasitology · 2024Review
- Myosin A and F-Actin play a critical role in mitochondrial dynamics and inheritance inbioRxiv : the preprint server for biology · 2024Article
- Analysis of CDPK1 targets identifies a trafficking adaptor complex that regulates microneme exocytosis ineLife · 2023Article
- Analysis of CDPK1 targets identifies a trafficking adaptor complex that regulates microneme exocytosis inbioRxiv : the preprint server for biology · 2023Article
- Identification ofmSphere · 2023Article
- Labeling strategies to track protozoan parasite proteome dynamics.Current opinion in chemical biology · 2023Review
- The protein phosphatase PPKL is a key regulator of daughter parasite development inbioRxiv : the preprint server for biology · 2023Article
- Egress Regulatory Factors: HowPathogens (Basel, Switzerland) · 2023Review
- Article
- A Coccidia-Specific Phosphate Transporter Is Essential for the Growth of Toxoplasma gondii Parasites.Microbiology spectrum · 2022Article
- Article
- Phosphorylation of myosin A regulates gliding motility and is essential for Plasmodium transmission.EMBO reports · 2022Article
- The Tyrosine Phosphatase PRL Regulates Attachment of Toxoplasma gondii to Host Cells and Is Essential for Virulence.mSphere · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
Abstract
Members of the family of calcium dependent protein kinases (CDPK's) are abundant in certain pathogenic parasites and absent in mammalian cells making them strong drug target candidates. In the obligate intracellular parasite Toxoplasma gondii TgCDPK3 is important for calcium dependent egress from the host cell. Nonetheless, the specific substrate through which TgCDPK3 exerts its function during egress remains unknown. To close this knowledge gap we applied the proximity-based protein interaction trap BioID and identified 13 proteins that are either near neighbors or direct interactors of TgCDPK3. Among these was Myosin A (TgMyoA), the unconventional motor protein greatly responsible for driving the gliding motility of this parasite, and whose phosphorylation at serine 21 by an unknown kinase was previously shown to be important for motility and egress. Through a non-biased peptide array approach we determined that TgCDPK3 can specifically phosphorylate serines 21 and 743 of TgMyoA in vitro. Complementation of the TgmyoA null mutant, which exhibits a delay in egress, with TgMyoA in which either S21 or S743 is mutated to alanine failed to rescue the egress defect. Similarly, phosphomimetic mutations in the motor protein overcome the need for TgCDPK3. Moreover, extracellular Tgcdpk3 mutant parasites have motility defects that are complemented by expression of S21+S743 phosphomimetic of TgMyoA. Thus, our studies establish that phosphorylation of TgMyoA by TgCDPK3 is responsible for initiation of motility and parasite egress from the host-cell and provides mechanistic insight into how this unique kinase regulates the lytic cycle of Toxoplasma gondii.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.