ArticleNucleic acids research2012
Mek1 stabilizes Hop1-Thr318 phosphorylation to promote interhomolog recombination and checkpoint responses during yeast meiosis.
Article in Nucleic acids research, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.
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38 citing papers in PubMed, 60 citations in OpenAlex.
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- Rad51, Rad54, and ZMM proteins antagonize the mismatch repair system to promote fertility of budding yeast intraspecies hybrid zygotes.Nucleic acids research · 2025Article
- A chromosome-coupled ubiquitin-proteasome pathway is required for meiotic surveillance.Cell death and differentiation · 2024Article
- Decoding the Nucleolar Role in Meiotic Recombination and Cell Cycle Control: Insights into Cdc14 Function.International journal of molecular sciences · 2024Review
- DNA cytosine methyltransferases differentially regulate genome-wide hypermutation and interhomolog recombination in Trichoderma reesei meiosis.Nucleic acids research · 2024Article
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- An acidic loop in the FHA domain of the yeast meiosis-specific kinase Mek1 interacts with a specific motif in a subset of Mek1 substrates.bioRxiv : the preprint server for biology · 2024Article
- Noncanonical usage of stop codons in ciliates expands proteins with structurally flexible Q-rich motifs.eLife · 2024Article
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- Novel mechanistic insights into the role of Mer2 as the keystone of meiotic DNA break formation.eLife · 2021Article
- Pch2 orchestrates the meiotic recombination checkpoint from the cytoplasm.PLoS genetics · 2021Article
- Budding yeast Rad51: a paradigm for how phosphorylation and intrinsic structural disorder regulate homologous recombination and protein homeostasis.Current genetics · 2021Review
- Phospho-Regulation of Meiotic Prophase.Frontiers in cell and developmental biology · 2021Review
- Dual roles of yeast Rad51 N-terminal domain in repairing DNA double-strand breaks.Nucleic acids research · 2020Article
- Mec1 Modulates Interhomolog Crossover and Interplays with Tel1 at Post Double-Strand Break Stages.Journal of microbiology and biotechnology · 2020Article
- ATM Promotes RAD51-Mediated Meiotic DSB Repair by Inter-Sister-Chromatid Recombination inFrontiers in plant science · 2020Article
- Article
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Red1, Hop1 and Mek1 are three yeast meiosis-specific chromosomal proteins that uphold the interhomolog (IH) bias of meiotic recombination. Mek1 is also an effector protein kinase in a checkpoint that responds to aberrant DNA and/or axis structure. The activation of Mek1 requires Red1-dependent Hop1-Thr(T)318 phosphorylation, which is mediated by Mec1 and Tel1, the yeast homologs of the mammalian DNA damage sensor kinases ATR and ATM. As the ectopic expression of Mek1-glutathione S-transferase (GST) was shown to promote IH recombination in the absence of Mec1/Tel1-dependent checkpoint function, it was proposed that Mek1 might play dual roles during meiosis by directly phosphorylating targets that are involved in the recombination checkpoint. Here, we report that Mek1 has a positive feedback activity in the stabilization of Mec1/Tel1-mediated Hop1-T318 phosphorylation against the dephosphorylation mediated by protein phosphatase 4. Our results also reveal that GST-Mek1 or Mek1-GST further increases Hop1-T318 phosphorylation. This positive feedback function of Mek1 is independent of Mek1's kinase activity, but dependent on Mek1's forkhead-associated (FHA) domain and its arginine 51 residue. Arginine 51 directly mediates the interaction of Mek1-FHA and phosphorylated Hop1-T318. We suggest that the Hop1-Mek1 interaction is similar to the Rad53-Dun1 signaling pathway, which is mediated through the interaction of phosphorylated Rad53 and Dun1-FHA.
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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.