Open AccessFttA is a CPSF73 homologue that terminates transcription in Archaea
Author(s) -
Travis J. Sanders,
Breanna R. Wenck,
Jocelyn N. Selan,
Mathew P. Barker,
Stavros A. Trimmer,
Julie E. Walker,
Thomas J. Santangelo
Publication year - 2020
Publication title -
nature microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 7.305
H-Index - 79
ISSN - 2058-5276
DOI - 10.1038/s41564-020-0667-3
Subject(s) - biology , general transcription factor , transcription (linguistics) , rna polymerase ii , genetics , archaea , e box , transcription factor , transcription factor ii f , response element , rna polymerase ii holoenzyme , rna polymerase , taf2 , promoter , gene , transcription factor ii d , microbiology and biotechnology , gene expression , rna , enhancer , linguistics , philosophy
Regulated gene expression is largely achieved by controlling the activities of essential, multisubunit RNA polymerase transcription elongation complexes (TECs). The extreme stability required of TECs to processively transcribe large genomic regions necessitates robust mechanisms to terminate transcription. Efficient transcription termination is particularly critical for gene-dense bacterial and archaeal genomes 1-3 in which continued transcription would necessarily transcribe immediately adjacent genes and result in conflicts between the transcription and replication apparatuses 4-6 ; the coupling of transcription and translation 7,8 would permit the loading of ribosomes onto aberrant transcripts. Only select sequences or transcription termination factors can disrupt the otherwise extremely stable TEC and we demonstrate that one of the last universally conserved archaeal proteins with unknown biological function is the Factor that terminates transcription in Archaea (FttA). FttA resolves the dichotomy of a prokaryotic gene structure (operons and polarity) and eukaryotic molecular homology (general transcription apparatus) that is observed in Archaea. This missing link between prokaryotic and eukaryotic transcription regulation provides the most parsimonious link to the evolution of the processing activities involved in RNA 3'-end formation in Eukarya.