ArticleChemistry & biology2013
Peptide-based inhibitors of Plk1 polo-box domain containing mono-anionic phosphothreonine esters and their pivaloyloxymethyl prodrugs.
Article in Chemistry & biology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It has been retracted, and should not be counted. Cited by 5 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
5 citing papers in PubMed.
- Structural regulation of PLK1 activity: implications for cell cycle function and drug discovery.Cancer gene therapy · 2025Review
- Design and synthesis of a new orthogonally protected glutamic acid analog and its use in the preparation of high affinity polo-like kinase 1 polo-box domain - binding peptide macrocycles.Organic & biomolecular chemistry · 2021Article
- The role of Plk3 in oncogenesis.Oncogene · 2016Review
- Understanding the Polo Kinase machine.Oncogene · 2015Review
- Avoidable errors in deposited macromolecular structures: an impediment to efficient data mining.IUCrJ · 2014Article
Corrections and comments
- Retraction · 2014-09-18Error in Analyses · Error in Results and/or Conclusions ·
- Retracted
Authors and funding
8 authors.
Funding
Abstract
Binding of polo-like kinase 1 (Plk1) polo-box domains (PBDs) to phosphothreonine (pThr)/phosphoserine (pSer)-containing sequences is critical for the proper function of Plk1. Although high-affinity synthetic pThr-containing peptides may be used to disrupt PBD function, the efficacy of such peptides in whole cell assays has been poor. This potentially reflects limited cell membrane permeability arising in part from the di-anionic nature of the phosphoryl group. We report five-mer peptides containing mono-anionic pThr phosphoryl esters that exhibit single-digit nanomolar PBD binding affinities in extracellular assays and improved antimitotic efficacies in whole cell assays. The cellular efficacies of these peptides have been further enhanced by the application of bio-reversible pivaloyloxymethyl (POM) phosphoryl protection to a pThr-containing polypeptide. Our findings may redefine structural parameters for the development of PBD-binding peptides and peptide mimetics.
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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.