ArticleProceedings of the National Academy of Sciences of the United States of America2022
CMG helicase can use ATPγS to unwind DNA: Implications for the rate-limiting step in the reaction mechanism.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 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
11 citing papers in PubMed, 12 citations in OpenAlex.
- Assembly of a homohexameric minichromosome maintenance complex is dependent on ATP and DNA.The Journal of biological chemistry · 2026Article
- A lethal ORC ATPase mutation is suppressed by alterations in ORC and RNA Pol II transcription components.PloS one · 2026Article
- SARS-CoV-2 point mutations are over-represented in terminal loops of RNA stem-loop structures that can be resolved by Nsp13 helicase in a unique manner with respect to nucleotide dependence.Nucleic acids research · 2025Article
- The replication protein of duck circovirus unwinds dsDNA in an ATP-driven and metal ion-dependent manner from 3' to 5'.Frontiers in veterinary science · 2025Article
- Single-molecule characterization of SV40 replisome and novel factors: human FPC and Mcm10.Nucleic acids research · 2024Article
- Observing inhibition of the SARS-CoV-2 helicase at single-nucleotide resolution.Nucleic acids research · 2023Article
- Synergism between CMG helicase and leading strand DNA polymerase at replication fork.Nature communications · 2023Article
- Unlicensed origin DNA melting by MCV and SV40 polyomavirus LT proteins is independent of ATP-dependent helicase activity.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Review
- Inhibition of the SARS-CoV-2 helicase at single-nucleotide resolution.bioRxiv : the preprint server for biology · 2022Article
- CMG helicase activity on G4-containing DNA templates.Methods in enzymology · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors at 1 institution in 1 country.
Funding
Abstract
The adenosine triphosphate (ATP) analog ATPγS often greatly slows or prevents enzymatic ATP hydrolysis. The eukaryotic CMG (Cdc45, Mcm2 to 7, GINS) replicative helicase is presumed unable to hydrolyze ATPγS and thus unable to perform DNA unwinding, as documented for certain other helicases. Consequently, ATPγS is often used to "preload" CMG onto forked DNA substrates without unwinding before adding ATP to initiate helicase activity. We find here that CMG does hydrolyze ATPγS and couples it to DNA unwinding. Indeed, the rate of unwinding of a 20- and 30-mer duplex fork of different sequences by CMG is only reduced 1- to 1.5-fold using ATPγS compared with ATP. These findings imply that a conformational change is the rate-limiting step during CMG unwinding, not hydrolysis. Instead of using ATPγS for loading CMG onto DNA, we demonstrate here that nonhydrolyzable adenylyl-imidodiphosphate (AMP-PNP) can be used to preload CMG onto a forked DNA substrate without unwinding.
Indexed as
Identifiers
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.