Chaperone machines for protein folding, unfolding and disaggregation

H Saibil - Nature reviews Molecular cell biology, 2013 - nature.com
Molecular chaperones are diverse families of multidomain proteins that have evolved to
assist nascent proteins to reach their native fold, protect subunits from heat shock during the …

A protease cascade regulates release of the human malaria parasite Plasmodium falciparum from host red blood cells

…, RA Fleck, AP Snijders, HR Saibil… - Nature …, 2018 - nature.com
Malaria parasites replicate within a parasitophorous vacuole in red blood cells (RBCs).
Progeny merozoites egress upon rupture of first the parasitophorous vacuole membrane (PVM), …

The protofilament structure of insulin amyloid fibrils

…, CV Robinson, CM Dobson, HR Saibil - Proceedings of the …, 2002 - National Acad Sciences
Under solution conditions where the native state is destabilized, the largely helical polypeptide
hormone insulin readily aggregates to form amyloid fibrils with a characteristic cross-β …

[HTML][HTML] A small heat shock protein stably binds heat‐denatured model substrates and can maintain a substrate in a folding‐competent state

GJ Lee, AM Roseman, HR Saibil, E Vierling - The EMBO journal, 1997 - embopress.org
The small heat shock proteins (sHSPs) recently have been reported to have molecular
chaperone activity in vitro; however, the mechanism of this activity is poorly defined. We found …

Atomic structure and hierarchical assembly of a cross-β amyloid fibril

…, TPJ Knowles, HR Saibil… - Proceedings of the …, 2013 - National Acad Sciences
The cross-β amyloid form of peptides and proteins represents an archetypal and widely
accessible structure consisting of ordered arrays of β-sheet filaments. These complex …

[HTML][HTML] Hsp26: a temperature-regulated chaperone

…, M Ehrnsperger, HE White, S Chen, HR Saibil… - The EMBO …, 1999 - embopress.org
Small heat shock proteins (sHsps) are a conserved protein family, with members found in all
organisms analysed so far. Several sHsps have been shown to exhibit chaperone activity …

[HTML][HTML] Cryo‐electron microscopy structure of an SH3 amyloid fibril and model of the molecular packing

…, J Zurdo, CM Dobson, M Sunde, HR Saibil - The EMBO …, 1999 - embopress.org
Amyloid fibrils are assemblies of misfolded proteins and are associated with pathological
conditions such as Alzheimer's disease and the spongiform encephalopathies. In the amyloid …

[HTML][HTML] Structural basis of pore formation by the bacterial toxin pneumolysin

…, EV Orlova, RJC Gilbert, PW Andrew, HR Saibil - Cell, 2005 - cell.com
The bacterial toxin pneumolysin is released as a soluble monomer that kills target cells by
assembling into large oligomeric rings and forming pores in cholesterol-containing …

The structural basis for membrane binding and pore formation by lymphocyte perforin

…, A Ciccone, MJ Kuiper, PI Bird, JA Trapani, HR Saibil… - Nature, 2010 - nature.com
Natural killer cells and cytotoxic T lymphocytes accomplish the critically important function of
killing virus-infected and neoplastic cells. They do this by releasing the pore-forming protein …

Mechanism of GroEL action: productive release of polypeptide from a sequestered position under GroES

…, O Kovalenko, Y Kashi, S Chen, K Braig, HR Saibil… - Cell, 1995 - cell.com
The chaperonin GroEL is a large, double-ring structure that, together with ATP and the
cochaperonin GroES, assists protein folding in vivo. GroES forms an asymmetric complex with …