Virologs, viral mimicry, and virocell metabolism: the expanding scale of cellular functions encoded in the complex genomes of giant viruses

M Moniruzzaman, MP Erazo Garcia… - FEMS microbiology …, 2023 - academic.oup.com
The phylum Nucleocytoviricota includes the largest and most complex viruses known. These
“giant viruses” have a long evolutionary history that dates back to the early diversification of …

From Mimivirus to Mirusvirus: the quest for hidden giants

M Gaïa, P Forterre - Viruses, 2023 - mdpi.com
Our perception of viruses has been drastically evolving since the inception of the field of
virology over a century ago. In particular, the discovery of giant viruses from the …

A rapid genome‐wide analysis of isolated giant viruses using MinION sequencing

H Hikida, Y Okazaki, R Zhang… - Environmental …, 2023 - Wiley Online Library
Following the discovery of Acanthamoeba polyphaga mimivirus, diverse giant viruses have
been isolated. However, only a small fraction of these isolates have been completely …

Cryo-EM structures of African swine fever virus topoisomerase

Y Zhao, W Kuang, Q An, J Li, Y Wang, Z Deng - Mbio, 2023 - Am Soc Microbiol
Type II topoisomerases ubiquitously exist in cellular organisms, where they play an essential
role in resolving the topological problems of DNA. The viral type II topoisomerase encoded …

Structural insights into the DNA topoisomerase II of the African swine fever virus

J Cong, Y Xin, H Kang, Y Yang, C Wang… - Nature …, 2024 - nature.com
Type II topoisomerases are ubiquitous enzymes that play a pivotal role in modulating the
topological configuration of double-stranded DNA. These topoisomerases are required for …

The last universal common ancestor of ribosome-encoding organisms: portrait of LUCA

P Forterre - Journal of Molecular Evolution, 2024 - Springer
The existence of LUCA in the distant past is the logical consequence of the binary
mechanism of cell division. The biosphere in which LUCA and contemporaries were living …

Extensive Bioinformatics Analyses Reveal a Phylogenetically Conserved Winged Helix (WH) Domain (Zτ) of Topoisomerase IIα, Elucidating Its Very High Affinity for …

M Bartas, K Slychko, J Červeň, P Pečinka… - International Journal of …, 2023 - mdpi.com
The dynamic processes operating on genomic DNA, such as gene expression and cellular
division, lead inexorably to topological challenges in the form of entanglements, catenanes …

Complex genomes of early nucleocytoviruses revealed by ancient origins of viral aminoacyl-tRNA synthetases

S Kijima, H Hikida, TO Delmont, M Gaïa… - Molecular Biology and …, 2024 - academic.oup.com
Abstract Aminoacyl-tRNA synthetases (aaRSs), also known as tRNA ligases, are essential
enzymes in translation. Owing to their functional essentiality, these enzymes are conserved …

Structural basis for difunctional mechanism of m-AMSA against African swine fever virus pP1192R

R Liu, J Sun, LF Li, Y Cheng, M Li, L Fu… - Nucleic Acids …, 2024 - academic.oup.com
The African swine fever virus (ASFV) type II topoisomerase (Topo II), pP1192R, is the only
known Topo II expressed by mammalian viruses and is essential for ASFV replication in the …

Resolving ancient gene transfers clarifies the early co-evolution of eukaryotes and giant viruses

S Karki, FO Aylward - bioRxiv, 2023 - biorxiv.org
Members of the phylum Nucleocytoviricota, also called “giant viruses” due to their large
physical dimensions and genome lengths, are a diverse group of dsDNA viruses that infect a …