Periplasmic chaperones: outer membrane biogenesis and envelope stress

AN Combs, TJ Silhavy - Annual Review of Microbiology, 2024 - annualreviews.org
Envelope biogenesis and homeostasis in gram-negative bacteria are exceptionally intricate
processes that require a multitude of periplasmic chaperones to ensure cellular survival …

ATP-independent chaperones

R Mitra, K Wu, C Lee… - Annual Review of …, 2022 - annualreviews.org
The folding of proteins into their native structure is crucial for the functioning of all biological
processes. Molecular chaperones are guardians of the proteome that assist in protein …

Increased G3BP2-Tau interaction in tauopathies is a natural defense against Tau aggregation

C Wang, M Terrigno, J Li, T Distler, NJ Pandya… - Neuron, 2023 - cell.com
Many RNA-binding proteins (RBPs), particularly those associated with RNA granules,
promote pathological protein aggregation in neurodegenerative diseases. Here, we …

A team of chaperones play to win in the bacterial periplasm

T Devlin, KG Fleming - Trends in Biochemical Sciences, 2024 - cell.com
The survival and virulence of Gram-negative bacteria require proper biogenesis and
maintenance of the outer membrane (OM), which is densely packed with β-barrel OM …

Chaperones Skp and SurA dynamically expand unfolded OmpX and synergistically disassemble oligomeric aggregates

N Chamachi, A Hartmann, MQ Ma, A Svirina… - Proceedings of the …, 2022 - pnas.org
Periplasmic chaperones 17-kilodalton protein (Skp) and survival factor A (SurA) are
essential players in outer membrane protein (OMP) biogenesis. They prevent unfolded …

Enzymatic and synthetic regulation of polypeptide folding

T Muraoka, M Okumura, T Saio - Chemical science, 2024 - pubs.rsc.org
Proper folding is essential for the biological functions of all proteins. The folding process is
intrinsically error-prone, and the misfolding of a polypeptide chain can cause the formation …

How do chaperones bind (partly) unfolded client proteins?

I Sučec, B Bersch, P Schanda - Frontiers in molecular biosciences, 2021 - frontiersin.org
Molecular chaperones are central to cellular protein homeostasis. Dynamic disorder is a key
feature of the complexes of molecular chaperones and their client proteins, and it facilitates …

SurA-like and skp-like proteins as important virulence determinants of the Gram negative bacterial pathogens

D Figaj, P Ambroziak, I Rzepka… - International Journal of …, 2023 - mdpi.com
In the Gram-negative bacteria, many important virulence factors reach their destination via
two-step export systems, and they must traverse the periplasmic space before reaching the …

Structural determinants of multimerization and dissociation in 2-Cys peroxiredoxin chaperone function

L Troussicot, BM Burmann, M Molin - Structure, 2021 - cell.com
Peroxiredoxins (PRDXs) are abundant peroxidases present in all kingdoms of life. Recently,
they have been shown to also carry out additional roles as molecular chaperones. To …

The sacrificial adaptor protein Skp functions to remove stalled substrates from the β-barrel assembly machine

AN Combs, TJ Silhavy - Proceedings of the National Academy of Sciences, 2022 - pnas.org
The biogenesis of integral β-barrel outer membrane proteins (OMPs) in gram-negative
bacteria requires transport by molecular chaperones across the aqueous periplasmic space …