Evidence map›Paper›PMID 33450015›Full record

ArticleNucleic acids research2021

Non-B DNA: a major contributor to small- and large-scale variation in nucleotide substitution frequencies across the genome.

Wilfried M Guiblet, Marzia A Cremona, Robert S Harris, Di Chen, Kristin A Eckert, Francesca Chiaromonte, Yi-Fei Huang, Kateryna D Makova

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed, 1 pooled it
7.8field-weighted citation impact, top 2% of its field
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

73 citing papers in PubMed, 1 synthesis or guideline pooled it, 120 citations in OpenAlex.

  1. Pooled it
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  18. ThebioRxiv : the preprint server for biology · 2025
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13 more citing papers are in PubMed but not listed here.

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

8 authors at 1 institution in 3 countries.

Wilfried M GuibletBioinformatics and Genomics Graduate Program, Penn State University, UniversityPark, PA 16802, USA.
Marzia A CremonaDepartment of Statistics, The Pennsylvania State University, University Park, PA 16802, USA.
Robert S HarrisDepartment of Biology, Penn State University, University Park, PA 16802, USA.
Di ChenIntercollege Graduate Degree Program in Genetics, Huck Institutes of the Life Sciences, Penn State University, UniversityPark, PA 16802, USA.
Kristin A EckertDepartment of Pathology, Penn State University, College of Medicine, Hershey, PA 17033, USA.
Francesca ChiaromonteDepartment of Statistics, The Pennsylvania State University, University Park, PA 16802, USA.
Yi-Fei HuangDepartment of Biology, Penn State University, University Park, PA 16802, USA.
Kateryna D MakovaDepartment of Biology, Penn State University, University Park, PA 16802, USA.
Pennsylvania State University · US

Funding

Computation, Bioinformatics, and Statistics (CBIOS) Training ProgramT32GM102057 · NIGMS · PENNSYLVANIA STATE UNIVERSITY, THE · PI CHIAROMONTE, FRANCESCA, GIRIRAJAN, SANTHOSH · 2013 to 2022
$2.7M
Pro-tumorigenic functions of human DNA polymerases eta and kappa during genome duplication under physiological replication stress conditionsR01CA237153 · NCI · PENNSYLVANIA STATE UNIV HERSHEY MED CTR · PI ECKERT, KRISTIN A · 2019 to 2023
$2.6M
The impact of G-quadruplexes on genome evolutionR01GM136684 · NIGMS · PENNSYLVANIA STATE UNIVERSITY, THE · PI MAKOVA, KATERYNA · 2021 to 2023
$1.7M
NCI NIH HHS R01 CA237153NIGMS NIH HHS R01 GM136684NIGMS NIH HHS T32 GM102057
6 · The paper itself

Abstract

Approximately 13% of the human genome can fold into non-canonical (non-B) DNA structures (e.g. G-quadruplexes, Z-DNA, etc.), which have been implicated in vital cellular processes. Non-B DNA also hinders replication, increasing errors and facilitating mutagenesis, yet its contribution to genome-wide variation in mutation rates remains unexplored. Here, we conducted a comprehensive analysis of nucleotide substitution frequencies at non-B DNA loci within noncoding, non-repetitive genome regions, their ±2 kb flanking regions, and 1-Megabase windows, using human-orangutan divergence and human single-nucleotide polymorphisms. Functional data analysis at single-base resolution demonstrated that substitution frequencies are usually elevated at non-B DNA, with patterns specific to each non-B DNA type. Mirror, direct and inverted repeats have higher substitution frequencies in spacers than in repeat arms, whereas G-quadruplexes, particularly stable ones, have higher substitution frequencies in loops than in stems. Several non-B DNA types also affect substitution frequencies in their flanking regions. Finally, non-B DNA explains more variation than any other predictor in multiple regression models for diversity or divergence at 1-Megabase scale. Thus, non-B DNA substantially contributes to variation in substitution frequencies at small and large scales. Our results highlight the role of non-B DNA in germline mutagenesis with implications to evolution and genetic diseases.

Indexed as

Genetic VariationGenome, HumanAnimalsDNAGenetic LociHumansMutation RatePolymorphism, Single NucleotidePongo pygmaeusDNA

Identifiers

PMID33450015
PMCPMC7897504
OpenAlexW3126007358

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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.