Regulation of gene expression in trypanosomatids: living with polycistronic transcription

C Clayton - Open biology, 2019 - royalsocietypublishing.org
In trypanosomes, RNA polymerase II transcription is polycistronic and individual mRNAs are
excised by trans-splicing and polyadenylation. The lack of individual gene transcription …

[HTML][HTML] Emergence and adaptation of the cellular machinery directing antigenic variation in the African trypanosome

J Faria, EM Briggs, JA Black, R McCulloch - Current opinion in …, 2022 - Elsevier
Survival of the African trypanosome within its mammalian hosts, and hence transmission
between hosts, relies upon antigenic variation, where stochastic changes in the composition …

The mitochondrial R-loop

IJ Holt - Nucleic acids research, 2019 - academic.oup.com
The DNA in mitochondria contributes essential components of the organelle's energy
producing machinery that is essential for life. In 1971, many mitochondrial DNA molecules …

R-loop-dependent replication and genomic instability in bacteria

M Drolet, J Brochu - DNA repair, 2019 - Elsevier
DNA replication, the faithful copying of genetic material, must be tightly regulated to produce
daughter cells with intact copies of the chromosome (s). This regulated replication is initiated …

RAD51-mediated R-loop formation acts to repair transcription-associated DNA breaks driving antigenic variation in Trypanosoma brucei

MJ Girasol, M Krasilnikova… - Proceedings of the …, 2023 - National Acad Sciences
RNA–DNA hybrids are epigenetic features of all genomes that intersect with many
processes, including transcription, telomere homeostasis, and centromere function …

Ribonuclease H1-targeted R-loops in surface antigen gene expression sites can direct trypanosome immune evasion

E Briggs, K Crouch, L Lemgruber, C Lapsley… - PLoS …, 2018 - journals.plos.org
Switching of the Variant Surface Glycoprotein (VSG) in Trypanosoma brucei provides a
crucial host immune evasion strategy that is catalysed both by transcription and …

Trypanosoma brucei ribonuclease H2A is an essential R-loop processing enzyme whose loss causes DNA damage during transcription initiation and antigenic …

E Briggs, K Crouch, L Lemgruber… - Nucleic Acids …, 2019 - academic.oup.com
Ribonucleotides represent a threat to DNA genome stability and transmission. Two types of
Ribonuclease H (RNase H) excise ribonucleotides when they form part of the DNA strand, or …

Telomere and subtelomere R-loops and antigenic variation in trypanosomes

A Saha, VP Nanavaty, B Li - Journal of molecular biology, 2020 - Elsevier
Trypanosoma brucei is a kinetoplastid parasite that causes African trypanosomiasis, which
is fatal if left untreated. T. brucei regularly switches its major surface antigen, VSG, to evade …

Bromodomain factor 5 is an essential regulator of transcription in Leishmania

NG Jones, V Geoghegan, G Moore… - Nature …, 2022 - nature.com
Leishmania are unicellular parasites that cause human and animal diseases. Like other
kinetoplastids, they possess large transcriptional start regions (TSRs) which are defined by …

Conditional knockout of RAD51-related genes in Leishmania major reveals a critical role for homologous recombination during genome replication

JD Damasceno, J Reis-Cunha, K Crouch… - PLoS …, 2020 - journals.plos.org
Homologous recombination (HR) has an intimate relationship with genome replication, both
during repair of DNA lesions that might prevent DNA synthesis and in tackling stalls to the …