ArticlePLoS genetics2019
SUR-8 interacts with PP1-87B to stabilize PERIOD and regulate circadian rhythms in Drosophila.
Article in PLoS genetics, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 6 citations in OpenAlex.
- Drosophila Pyruvate Kinase Links Metabolic State with Circadian Output via TARANIS and PDF.Research square · 2025Article
- Drosophila Pyruvate Kinase Links Metabolic State with Circadian Output via TARANIS and PDF.bioRxiv : the preprint server for biology · 2025Article
- The Function, Regulation, and Mechanism of Protein Turnover in Circadian Systems inInternational journal of molecular sciences · 2024Review
- Systematic modeling-driven experiments identify distinct molecular clockworks underlying hierarchically organized pacemaker neurons.Proceedings of the National Academy of Sciences of the United States of America · 2022Article
- CK2 Inhibits TIMELESS Nuclear Export and Modulates CLOCK Transcriptional Activity to Regulate Circadian Rhythms.Current biology : CB · 2021Article
- The leucine-rich repeat signaling scaffolds Shoc2 and Erbin: cellular mechanism and role in disease.The FEBS journal · 2021Review
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
Abstract
Circadian rhythms are generated by endogenous pacemakers that rely on transcriptional-translational feedback mechanisms conserved among species. In Drosophila, the stability of a key pacemaker protein PERIOD (PER) is tightly controlled by changes in phosphorylation status. A number of molecular players have been implicated in PER destabilization by promoting PER progressive phosphorylation. On the other hand, there have been few reports describing mechanisms that stabilize PER by delaying PER hyperphosphorylation. Here we report that the protein Suppressor of Ras (SUR-8) regulates circadian locomotor rhythms by stabilizing PER. Depletion of SUR-8 from circadian neurons lengthened the circadian period by about 2 hours and decreased PER abundance, whereas its overexpression led to arrhythmia and an increase in PER. Specifically SUR-8 promotes the stability of PER through phosphorylation regulation. Interestingly, downregulation of the protein phosphatase 1 catalytic subunit PP1-87B recapitulated the phenotypes of SUR-8 depletion. We found that SUR-8 facilitates interactions between PP1-87B and PER. Depletion of SUR-8 decreased the interaction of PER and PP1-87B, which supports the role of SUR-8 as a scaffold protein. Interestingly, the interaction between SUR-8 and PER is temporally regulated: SUR-8 has more binding to PER at night than morning. Thus, our results indicate that SUR-8 interacts with PP1-87B to control PER stability to regulate circadian rhythms.
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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.