RNA polymerase pausing, stalling and bypass during transcription of damaged DNA: from molecular basis to functional consequences

A Agapov, A Olina, A Kulbachinskiy - Nucleic Acids Research, 2022 - academic.oup.com
Cellular DNA is continuously transcribed into RNA by multisubunit RNA polymerases
(RNAPs). The continuity of transcription can be disrupted by DNA lesions that arise from the …

Protein structure dynamics by crosslinking mass spectrometry

ZA Chen, J Rappsilber - Current opinion in structural biology, 2023 - Elsevier
Crosslinking mass spectrometry captures protein structures in solution. The crosslinks reveal
spatial proximities as distance restraints, but do not easily reveal which of these restraints …

Basis of narrow-spectrum activity of fidaxomicin on Clostridioides difficile

X Cao, H Boyaci, J Chen, Y Bao, R Landick… - Nature, 2022 - nature.com
Fidaxomicin (Fdx) is widely used to treat Clostridioides difficile (Cdiff) infections, but the
molecular basis of its narrow-spectrum activity in the human gut microbiome remains …

Structural basis for intrinsic transcription termination

L You, EO Omollo, C Yu, RA Mooney, J Shi, L Shen… - Nature, 2023 - nature.com
Efficient and accurate termination is required for gene transcription in all living organisms,.
Cellular RNA polymerases in both bacteria and eukaryotes can terminate their transcription …

Dissecting diazirine photo-reaction mechanism for protein residue-specific cross-linking and distance map**

Y Jiang, X Zhang, H Nie, J Fan, S Di, H Fu… - Nature …, 2024 - nature.com
While photo-cross-linking (PXL) with alkyl diazirines can provide stringent distance restraints
and offer insights into protein structures, unambiguous identification of cross-linked residues …

[HTML][HTML] Structural insights into RNA-mediated transcription regulation in bacteria

S Dey, C Batisse, J Shukla, MW Webster, M Takacs… - Molecular Cell, 2022 - cell.com
RNA can regulate its own synthesis without auxiliary proteins. For example, U-rich RNA
sequences signal RNA polymerase (RNAP) to pause transcription and are required for …

Structural basis of transcription activation by the global regulator Spx

J Shi, F Li, A Wen, L Yu, L Wang, F Wang… - Nucleic Acids …, 2021 - academic.oup.com
Spx is a global transcriptional regulator in Gram-positive bacteria and has been inferred to
efficiently activate transcription upon oxidative stress by engaging RNA polymerase (RNAP) …

Molecular basis for RNA polymerase-dependent transcription complex recycling by the helicase-like motor protein HelD

TP Newing, AJ Oakley, M Miller, CJ Dawson… - Nature …, 2020 - nature.com
In bacteria, transcription complexes stalled on DNA represent a major source of roadblocks
for the DNA replication machinery that must be removed in order to prevent damaging …

Mycobacterial HelD is a nucleic acids-clearing factor for RNA polymerase

T Kouba, T Koval', P Sudzinová, J Pospíšil… - Nature …, 2020 - nature.com
RNA synthesis is central to life, and RNA polymerase (RNAP) depends on accessory factors
for recovery from stalled states and adaptation to environmental changes. Here, we …

Structural basis of promoter recognition by Staphylococcus aureus RNA polymerase

L Yuan, Q Liu, L Xu, B Wu, Y Feng - Nature Communications, 2024 - nature.com
Bacterial RNAP needs to form holoenzyme with σ factors to initiate transcription. While
Staphylococcus aureus σA controls housekee** functions, S. aureus σB regulates …