Cited by 43Genomics and Chromatin DynamicsGenomics and Phylogenetic StudiesChromosomal and Genetic Variations

Histones predate the split between bacteria and archaea

Alva, Vikram, Lupas, Andrei N·2019·Bioinformatics

Abstract

Motivation: Histones form octameric complexes called nucleosomes, which organize the genomic DNA of eukaryotes into chromatin. Each nucleosome comprises two copies each of the histones H2A, H2B, H3 and H4, which share a common ancestry. Although histones were initially thought to be a eukaryotic innovation, the subsequent identification of archaeal homologs led to the notion that histones emerged before the divergence of archaea and eukaryotes. Results: Here, we report the detection and classification of two new groups of histone homologs, which are present in both archaea and bacteria. Proteins in one group consist of two histone subunits welded into single-chain pseudodimers, whereas in the other they resemble eukaryotic core histone subunits and show sequence patterns characteristic of DNA binding. The sequences come from a broad spectrum of deeply-branching lineages, excluding their genesis by horizontal gene transfer. Our results extend the origin of histones to the last universal common ancestor. Supplementary information: Supplementary data are available at Bioinformatics online.

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Crossref · 10.1093/bioinformatics/bty1000

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  • A histone-related cluster supports the previously reported evolutionary link between eukaryotic and bacterial histones.

    “However, we found exceptions including, for example, a histone-related cluster (Fig. 3c) supporting the previously reported evolutionary link between eukaryotic and bacterial histones26.”

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Authors
Alva, V., & Lupas, A. N.
Corresponding author
Alva, Vikram
Venue
Bioinformatics
Published
2018-12-06
Volume
35
Issue
14
Pages
2349-2353
ISSN
  • 1367-4803 (ISSN-L)
  • 1367-4811
OpenAlex
W2904141395
Cited by
43
References
35
Citations by year
2026: 4 · 2025: 12 · 2024: 11 · 2023: 8 · 2022: 3 · 2021: 3 · 2019: 2
FWCI
0.45
Type
journal article
Language
en
Open access
closed
Locations
  • Bioinformatics (publishedVersion)
  • PubMed (publishedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion)
Funders
Max Planck Society
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Chromatin Dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Life Sciences › Agricultural and Biological Sciences › Plant Science › Chromosomal and Genetic Variations
Keywords
histones, histone evolution, archaea, bacteria, last universal common ancestor, nucleosome, DNA binding, horizontal gene transfer
MeSH terms
Archaea, Bacteria, Histones, Nucleosomes

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