Evidence map›Paper›PMID 40165377›Full record

ArticleMicroscopy research and technique2025

Alternatives for Uranyl Acetate Negative Staining With Respect to the Resolution Obtained After Single Particle Analysis of Erythrocruorin.

Foteini Karapanagioti, Nicolas Cissé, Anastasiia Atamas, Artem Stetsenko, Christiaan Michiel Punter, Erica Zuidersma, Marc C A Stuart

Abstract readEvaluation Study
In one paragraph

Article in Microscopy research and technique, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Foteini KarapanagiotiGroningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, the Netherlands.
Nicolas CisséStratingh Institute for Chemistry, University of Groningen, Groningen, the Netherlands.
Anastasiia AtamasGroningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, the Netherlands.
Artem StetsenkoGroningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, the Netherlands.
Christiaan Michiel PunterGroningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, the Netherlands.
Erica ZuidersmaIsotopes Lab, Faculty of Science and Engineering, University of Groningen, Groningen, the Netherlands.
Marc C A StuartGroningen Biomolecular Sciences and Biotechnology Institute (GBB), University of Groningen, Groningen, the Netherlands.ORCID https://orcid.org/0000-0003-0667-6338

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Although cryo-electron microscopy is widely used for determining high-resolution structures, negative staining of proteins and supramolecular aggregates remain a valuable screening method, especially for low-abundant proteins. The most commonly used contrasting agent is uranyl acetate (UAc). However, due to its toxicity and the strong regulations connected to the use of uranium compounds, there is an ongoing search for alternative stains, with the focus being shifted to lanthanide and tungsten compounds. In this study, the performance of neodymium acetate (NdAc), europium acetate (EuAc), ytterbium acetate (YbAc), phosphotungstic acid, and the commercially available UA-Zero as negative staining agents for single molecule electron microscopy is evaluated. We focus not only on the observed contrast but also on the resolution that can be obtained after negative staining and single-particle analysis. The findings demonstrate that NdAc, EuAc, and UA-Zero can be good alternatives for the overall superior UAc. Additionally, we explore the working pH range of the stains and discuss the usability of the compounds in terms of availability and regulations.

Indexed as

Coloring AgentsCryoelectron MicroscopyHemoglobinsNegative StainingOrganometallic CompoundsEuropiumHydrogen-Ion ConcentrationMacromolecular SubstancesNeodymiumPhosphotungstic AcidProteinsSingle Molecule ImagingYtterbiumColoring AgentserythrocruorinEuropiumHemoglobinsMacromolecular SubstancesNeodymiumOrganometallic CompoundsPhosphotungstic AcidProteinsuranyl acetateYtterbiumelectron microscopyimage processinglanthanide stainsnegative stainPTAUA‐zerouranyl acetate

Identifiers

PMID40165377
PMCPMC12315638

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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.