Related Experiment Video
Updated: Aug 5, 2026
22:27
Hi-C: A Method to Study the Three-dimensional Architecture of Genomes.
Published on: May 6, 2010
Genome-wide mapping of persistent long-range correlation in the complete telomere-to-telomere human reference genome
Kleio Papatheodorou1, Georgios Megalovasilis1, Apostolos Zaravinos2,3
1Division of Pharmacology and Toxicology, College of Pharmacy, The University of Texas at Austin, Dell Paediatric Research Institute, Austin, TX, USA.
Biorxiv : the Preprint Server for Biology
|July 29, 2026
Summary
Long-range correlations in DNA are widespread across the complete human genome, revealing a complex, heterogeneous structure. The telomere-to-telomere assembly highlights repetitive regions influencing DNA sequence scaling and genome organization.
Area of Science:
- Genomics
- Bioinformatics
- Sequence Analysis
Background:
- Long-range correlations (LRCs) in DNA sequences are known but poorly understood due to incomplete genome assemblies.
- Previous studies were limited in representing repetitive and complex genomic regions.
Purpose of the Study:
- To systematically map the structure of LRCs across all human chromosomes using the complete telomere-to-telomere (T2T) human reference genome.
- To investigate the spatial distribution and characteristics of long-range dependence (LRD) in the human genome.
Main Methods:
- Utilized the complete T2T human reference genome for comprehensive analysis.
- Applied wavelet analysis and multifractal detrended fluctuation analysis (MF-DFA).
- Employed surrogate analyses, including block-shuffling and Autoregressive Moving-Average (ARMA) models, to validate findings.
Main Results:
- Most human chromosomes exhibit persistent LRD with chromosome-specific scaling intervals from kilobases to megabases.
- Hurst landscapes show LRCs are spatially heterogeneous, not uniformly distributed.
- Specific chromosomes (9, 15, X, Y) display multifractal behavior, linked to satellite-rich and complex regions.
- Correlations exceed expectations from base composition and local structure alone.
Conclusions:
- LRCs are a widespread yet spatially heterogeneous feature of the complete human genome.
- The T2T assembly reveals that unresolved repetitive and satellite-rich regions significantly impact scaling variation.
- Findings provide a framework for studying genome evolution, chromatin structure, and genomic instability.
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