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First human SMUG1 atomic snapshots reveal how cells repair DNA

Phys · · 442 words · By Stockholm University
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What to know about First human SMUG1 atomic snapshots reveal how cells repair DNA

Researchers have captured the first atomic structures of the human SMUG1 enzyme, which is responsible for repairing damaged DNA. The study, published in Nature Communications, provides insights into how the enzyme recognizes harmful bases and may aid in the development of future cancer-related drugs.

Propaganda risk 0%
Claims checked 10
Techniques found 0
Topics 0

Coverage spectrum

Coverage gap: Low Left coverage
Left0%
Center67%
Right33%

3 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

First human SMUG1 atomic snapshots reveal how cells repair DNA Sadie Harley Scientific Editor Robert Egan Associate Editor Researchers have captured the first atomic structures of human SMUG1, an enzyme that helps cells repair damaged DNA.

Why it matters

The findings provide new insight into how cells recognize and remove harmful DNA bases, and may support future efforts to develop drugs that target this DNA repair pathway.

Common ground

"These structures give us the first detailed view of how human SMUG1 engages damaged DNA and carries out the first steps of repair," says professor Pål Stenmark, who led the study.

Perspective signals

No major persuasion pattern has been attached yet, so the source, headline, and evidence should carry most of the weight for readers.

Researchers have captured the first atomic structures of the human SMUG1 enzyme, which is responsible for repairing damaged DNA. The study, published in Nature Communications, provides insights into how the enzyme recognizes harmful bases and may aid in the development of future cancer-related drugs.

open_in_new Read the original article: https://phys.org/news/2026-06-human-smug1-atomic-snapshots-reveal.html

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0%
Propaganda Score
confidence: 100%
Low risk. This article shows minimal use of propaganda techniques.

fact_checkClaims Checked

eFinder analyzed this article and checked 10 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

info Single Source 4
check_circle Corroborated 3
verified Verified By Reference 2
help Insufficient Evidence 1
verified
Claim 1: “the European Spallation Source (ESS), the world's most powerful neutron source, is currently being built in Sweden.”
VERIFIED BY REFERENCE
Wikipedia confirms that the European Spallation Source (ESS) is a research facility currently under construction in Lund, Sweden.
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wikipedia NEUTRAL — The European Spallation Source ERIC (ESS) is a multi-disciplinary research facility currently under construction in Lund, Sweden. Its Data Management and Software Centre (DMSC) is co-located with DTU …
https://en.wikipedia.org/wiki/European_Spallation_Source
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wikipedia NEUTRAL — A neutron source is any device that emits neutrons, irrespective of the mechanism used to produce the neutrons. Neutron sources are used in physics, engineering, medicine, nuclear weapons, petroleum e…
https://en.wikipedia.org/wiki/Neutron_source
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wikipedia NEUTRAL — Spallation is a process in which fragments of material (spall) are ejected from a body due to impact or stress. In the context of impact mechanics it describes ejection of material from a target durin…
https://en.wikipedia.org/wiki/Spallation
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Claim 2: “Researchers have captured the first atomic structures of human SMUG1, an enzyme that helps cells repair damaged DNA.”
CORROBORATED
Two independent web search results (EurekAlert! and another news source) explicitly state that researchers have captured the first atomic structures of human SMUG1.
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web search NEUTRAL — Researchers have captured the first atomic structures of human SMUG1, an enzyme that helps cells repair damaged DNA. The findings provide new insight into how cells recognise and remove harmful DNA ba…
https://www.eurekalert.org/news-releases/1130263
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web search NEUTRAL — Researchers have captured the first atomic-level views of human SMUG1, a key enzyme involved in repairing damaged DNA.
https://www.rapamycin.news/t/researchers-capture-the-first-a…
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web search NEUTRAL — This is the first time researchers have seen telomerase in the process of making DNA. The researchers captured telomerase immediately after it added a nucleotide to a growing DNA chain in the catalyti…
https://scitechdaily.com/scientists-see-inner-workings-of-en…
info
Claim 3: “These structures show SMUG1 in different states: on its own, bound to the molecules uracil and 5-fluorouracil, and attached to double-stranded DNA.”
SINGLE SOURCE
Only one web search result (dated June 2, 2026) describes the specific states of SMUG1 (alone, bound to uracil, 5-fluorouracil, and DNA).
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web search NEUTRAL — Jun 2, 2026 ... In the new study, published in Nature Communications, they present the first structures of the enzyme. These structures show SMUG1 in different ...
https://www.eurekalert.org/news-releases/1130263
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web search NEUTRAL — This review focuses on single-strand selective monofunctional uracil–DNA glycosylase (SMUG1), an enzyme whose name incompletely captures its broader biological ...
https://academic.oup.com/narcancer/article-pdf/7/4/zcaf050/6…
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web search NEUTRAL — Dec 12, 2025 ... This review focuses on single-strand selective monofunctional uracil–DNA glycosylase (SMUG1), an enzyme whose name incompletely captures its ...
https://pmc.ncbi.nlm.nih.gov/articles/PMC12699328/
info
Claim 4: “In the new study, published in Nature Communications, they present the first structures of the enzyme.”
SINGLE SOURCE
While one web search result mentions the study in Nature Communications presenting the first structures, the other provided results for Nature Communications are general descriptions of the journal and do not specifically confirm this paper's existence.
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wikipedia NEUTRAL — 8-Oxo-2'-deoxyguanosine (8-oxo-dG) is an oxidized derivative of deoxyguanosine. 8-Oxo-dG is one of the major products of DNA oxidation. Concentrations of 8-oxo-dG within a cell are a measurement of …
https://en.wikipedia.org/wiki/8-Oxo-2'-deoxyguanosine
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wikipedia NEUTRAL — Cyclin-O is a protein that in humans is encoded by the CCNO gene.
https://en.wikipedia.org/wiki/Cyclin_O
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wikipedia NEUTRAL — In biology, reprogramming refers to erasure and remodeling of epigenetic marks, such as DNA methylation, during mammalian development or in cell culture. Such control is also often associated with alt…
https://en.wikipedia.org/wiki/Reprogramming
+ 3 more evidence sources
help
Claim 5: “Ludäscher, J.M., et al. Structural basis for uracil removal from DNA by human SMUG1, Nature Communications (2026). DOI: 10.1038/s41467-026-72937-0”
INSUFFICIENT EVIDENCE
No evidence was provided for this specific citation in the gathered results.
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Claim 6: “One enzyme involved in this repair process is human SMUG1, which removes uracil and related damaged bases from DNA.”
CORROBORATED
The function of SMUG1 as an enzyme that removes uracil and damaged bases from DNA is confirmed by Wikipedia, EurekAlert!, and BioTek.
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web search NEUTRAL — Single-strand selective monofunctional uracil DNA glycosylase is an enzyme that in humans is encoded by the SMUG1 gene. SMUG1 is a glycosylase that removes uracil from single- and double-stranded DNA …
https://en.wikipedia.org/wiki/SMUG1
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web search NEUTRAL — If the damage is not repaired, it can lead to permanent mutations. One enzyme involved in this repair process is human SMUG1, which removes uracil and related damaged bases from DNA.
https://www.eurekalert.org/news-releases/1130263
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web search NEUTRAL — SMUG1, or single-strand-selective monofunctional uracil-DNA glycosylase, is an enzyme that identifies and targets base lesions within the genome, initiating the base excision DNA repair process. This …
https://www.thebiotek.com/smug1_human
info
Claim 7: “The study also reports the first joint neutron and X-ray structure of a DNA-binding protein.”
SINGLE SOURCE
The provided evidence for this claim consists of generic links to 'Study.com' and 'Studley AI' and contains no information regarding neutron and X-ray structures of proteins.
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web search NEUTRAL — Take online courses on Study.com that are fun and engaging. Pass exams to earn real college credit. Research schools and degrees to further your education.
https://study.com/
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web search NEUTRAL — Master any subject with Studley AI. Trusted by more than 2,000,000 top students. Create beautiful and interactive notes, flashcards, quizzes and podcasts from any content. Study smarter, not harder.
https://www.studley.ai/
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web search NEUTRAL — Need a Study.com Account? Simple & engaging videos to help you learn Unlimited access to 88,000+ lessons The lowest-cost way to earn college credit
https://study.com/academy/login.html
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Claim 8: “The work is a collaboration between Uppsala University, Karolinska Institutet, Institut Laue-Langevin (ILL), European Spallation Source (ESS) and Stockholm University.”
CORROBORATED
A LinkedIn post from Alessandro Bertero (June 2, 2026) explicitly lists the collaboration between Uppsala University, Karolinska Institutet, ILL, ESS, and Stockholm University. Wikipedia confirms the existence of these institutions.
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wikipedia NEUTRAL — The Karolinska Institute (KI; Swedish: Karolinska Institutet; sometimes known as the (Royal) Caroline Institute in English) is a research-led medical school in Solna within the Stockholm urban area of…
https://en.wikipedia.org/wiki/Karolinska_Institute
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wikipedia NEUTRAL — The Karolinska University Hospital (Swedish: Karolinska universitetssjukhuset) is a teaching hospital affiliated with Karolinska Institutet in Stockholm, Sweden, with two major sites in the municipali…
https://en.wikipedia.org/wiki/Karolinska_University_Hospital
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wikipedia NEUTRAL — Uppsala University (UU) (Swedish: Uppsala universitet) is a public research university in Uppsala, Sweden. Founded in 1477, it is the oldest university in Sweden and the Nordic countries. The universi…
https://en.wikipedia.org/wiki/Uppsala_University
+ 3 more evidence sources
verified
Claim 9: “Uracil is one of the four nucleotide bases normally found in the nucleic acid RNA”
VERIFIED BY REFERENCE
Wikipedia explicitly confirms that uracil is one of the four nucleotide bases found in RNA.
travel_explore
web search NEUTRAL — The four nucleobases in DNA are guanine, adenine, cytosine, and thymine (G, A, C, and T); in RNA, uracil (U) is used in place of thymine. Nucleotides also play a central role in metabolism at a fundam…
https://en.wikipedia.org/wiki/Nucleotide
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web search NEUTRAL — They function as the fundamental units of the genetic code, with the bases A, C, G and T being found in DNA while A, C, G and U are found in RNA. Thymine and ...
https://en.wikipedia.org/wiki/Nucleotide_base
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web search NEUTRAL — Uracil (U) is one of the four nucleotide bases in RNA, with the other three being adenine (A), cytosine (C) and guanine (G). In RNA, uracil pairs with adenine.The fact that uracil is present in RNA an…
https://www.genome.gov/genetics-glossary/Uracil
info
Claim 10: “The molecule 5-fluorouracil is a cytostatic agent widely used in cancer treatment.”
SINGLE SOURCE
The provided evidence for this claim consists of search results for the number '5' and does not contain any information regarding 5-fluorouracil or its use as a cytostatic agent.
travel_explore
web search NEUTRAL — The evolution of the modern Western digit for the numeral for five is traced back to the Indian system of numerals, where on some earlier versions, the numeral bore resemblance to variations of the nu…
https://en.wikipedia.org/wiki/5
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web search NEUTRAL — Mar 11, 2024 · Curious about some unique facts about the number 5? Dive into an array of characteristics, from its prime status to its role in nature, language, and sports!
https://kidadl.com/facts/math-science/facts-about-the-number…
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web search NEUTRAL — Nov 13, 2019 · Learn the different ways number 5 can be represented. See the number five on a number line, five frame, ten frame, numeral, word, dice, dominoes, tally mark, fingers ...more
https://www.youtube.com/watch?v=q_DGrdsyirk
info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.