Diversity of prokaryotic chromosomal proteins and the origin of the nucleosome

@article{Sandman1998DiversityOP,
  title={Diversity of prokaryotic chromosomal proteins and the origin of the nucleosome},
  author={Kathleen Sandman and Suzette L Pereira and John N. Reeve},
  journal={Cellular and Molecular Life Sciences CMLS},
  year={1998},
  volume={54},
  pages={1350-1364}
}
Abstract. All cells employ architectural proteins to confine and organize their chromosomes, and to prevent the otherwise thermodynamically favored collapse of concentrated DNA into compact structures. To accomplish this, prokaryotes have evolved a variety of phylogenetically unrelated, small, basic, sequence-independent DNA-binding proteins that include histones in Euryarchaeota, and members of the HU family in many Bacteria. In contrast, virtually all Eukarya employ histones, and recently a… 
Archaeal Histone Contributions to the Origin of Eukaryotes.
Structure and function of archaeal histones
TLDR
The amino acid determinants of hypernucleosome formation are discussed and differences with the canonical eukaryotic octamer are highlighted and possibilities of involvement of histones in archaeal transcription regulation are discussed.
Structure and functional relationships of archaeal and eukaryal histones and nucleosomes
TLDR
A comparison of the properties of both nucleosomes in terms of DNA packaging and the accessibility of the packaged DNA for transcription is compared.
Phylogenomics of the nucleosome
TLDR
Diversification of histone variants and 'deviants' contradicts the perception of histones as monotonous members of multigene families that indiscriminately package and compact the genome.
Prokaryotic and eukaryotic chromosomes: what's the difference?
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TLDR
It is suggested that the criterion of nucleosome-based packaging of chromosomal DNA may be more useful than the prokaryote/eukaryote dichotomy for inferring the broadest phylogenetic relationships among organisms.
Novel clades of the HU/IHF superfamily point to unexpected roles in the eukaryotic centrosome, chromosome partitioning, and biologic conflicts
TLDR
Evidence is presented that a novel eukaryotic clade prototyped by the human CCDC81 protein acquired roles beyond DNA-binding, likely in protein-protein interaction in centrosome organization and as a potential cargo-binding protein in conjunction with Dynein-VII.
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