A novel RHH family transcription factor aCcr1 and its viral homologs dictate cell cycle progression in archaea - Institut Pasteur Access content directly
Journal Articles Nucleic Acids Research Year : 2023

A novel RHH family transcription factor aCcr1 and its viral homologs dictate cell cycle progression in archaea

Yunfeng Yang
  • Function : Author
Xiaofei Fu
  • Function : Author
Fan Zhou
  • Function : Author
Shuo Zhang
  • Function : Author
Xuemei Zhang
  • Function : Author
Qihong Huang
  • Function : Author
Mart Krupovic
Qunxin She
Jinfeng Ni
Yulong Shen
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Abstract

Cell cycle regulation is of paramount importance for all forms of life. Here, we report that a conserved and essential cell cycle-specific transcription factor (designated as aCcr1) and its viral homologs control cell division in Sulfolobales. We show that the transcription level of accr1 reaches peak during active cell division (D-phase) subsequent to the expression of CdvA, an archaea-specific cell division protein. Cells over-expressing the 58-aa-long RHH (ribbon-helix-helix) family cellular transcription factor as well as the homologs encoded by large spindle-shaped viruses Acidianus two-tailed virus (ATV) and Sulfolobus monocaudavirus 3 (SMV3) display significant growth retardation and cell division failure, manifesting as enlarged cells with multiple chromosomes. aCcr1 over-expression results in downregulation of 17 genes (>4-fold), including cdvA. A conserved motif, aCcr1-box, located between the TATA-binding box and the translation initiation site of 13 out of the 17 highly repressed genes, is critical for aCcr1 binding. The aCcr1-box is present in the promoters and 5′ UTRs of cdvA genes across Sulfolobales, suggesting that aCcr1-mediated cdvA repression is an evolutionarily conserved mechanism by which archaeal cells dictate cytokinesis progression, whereas their viruses take advantage of this mechanism to manipulate the host cell cycle.
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Origin : Publication funded by an institution
Licence : CC BY NC - Attribution - NonCommercial

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pasteur-04027999 , version 1 (14-03-2023)

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Attribution - NonCommercial

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Yunfeng Yang, Junfeng Liu, Xiaofei Fu, Fan Zhou, Shuo Zhang, et al.. A novel RHH family transcription factor aCcr1 and its viral homologs dictate cell cycle progression in archaea. Nucleic Acids Research, 2023, 51 (4), pp.1707-1723. ⟨10.1093/nar/gkad006⟩. ⟨pasteur-04027999⟩

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