[HTML][HTML] Potentiated Hsp104 variants antagonize diverse proteotoxic misfolding events

ME Jackrel, ME DeSantis, BA Martinez, LM Castellano… - Cell, 2014 - cell.com
There are no therapies that reverse the proteotoxic misfolding events that underpin fatal
neurodegenerative diseases, including amyotrophic lateral sclerosis (ALS) and Parkinson's …

[HTML][HTML] Structural basis for substrate gripping and translocation by the ClpB AAA+ disaggregase

…, SN Gates, E Tse, SM Bart, LM Castellano… - Nature …, 2019 - nature.com
Bacterial ClpB and yeast Hsp104 are homologous Hsp100 protein disaggregases that serve
critical functions in proteostasis by solubilizing protein aggregates. Two AAA+ nucleotide …

Parallel anxiolytic-like effects and upregulation of neuronal nicotinic acetylcholine receptors following chronic nicotine and varenicline

JR Turner, LM Castellano… - Nicotine & Tobacco …, 2011 - academic.oup.com
Introduction: Clinical and preclinical studies suggest that regulation of nicotinic acetylcholine
receptors (nAChR) maybe involved in the etiology of withdrawal symptoms. Methods: We …

A molecular tweezer antagonizes seminal amyloids and HIV infection

E Lump, LM Castellano, C Meier, J Seeliger, N Erwin… - Elife, 2015 - elifesciences.org
10.7554/eLife.05397.001 Semen is the main vector for HIV transmission and contains
amyloid fibrils that enhance viral infection. Available microbicides that target viral components …

Nicotinic partial agonists varenicline and sazetidine-A have differential effects on affective behavior

JR Turner, LM Castellano, JA Blendy - Journal of Pharmacology and …, 2010 - ASPET
Clinical and preclinical studies suggest that nicotinic acetylcholine receptors are involved in
affective disorders; therefore, the potential therapeutic value of nicotinic partial agonists as …

[HTML][HTML] The surprising role of amyloid fibrils in HIV infection

LM Castellano, J Shorter - Biology, 2012 - mdpi.com
Despite its discovery over 30 years ago, human immunodeficiency virus (HIV) continues to
threaten public health worldwide. Semen is the principal vehicle for the transmission of this …

Therapeutic genetic variation revealed in diverse Hsp104 homologs

ZM March, K Sweeney, H Kim, X Yan, LM Castellano… - elife, 2020 - elifesciences.org
The AAA+ protein disaggregase, Hsp104, increases fitness under stress by reversing stress-induced
protein aggregation. Natural Hsp104 variants might exist with enhanced, selective …

[PDF][PDF] Structure of Calcarisporiella thermophila Hsp104 disaggregase that antagonizes diverse proteotoxic misfolding events

…, G Pintilie, L Bigelow, LM Castellano… - Structure, 2019 - cell.com
Hsp104 is an AAA+ protein disaggregase with powerful amyloid-remodeling activity. All
nonmetazoan eukaryotes express Hsp104 while eubacteria express an Hsp104 ortholog, ClpB. …

[PDF][PDF] Repurposing Hsp104 to antagonize seminal amyloid and counter HIV infection

LM Castellano, SM Bart, VM Holmes, D Weissman… - Chemistry & biology, 2015 - cell.com
Naturally occurring proteolytic fragments of prostatic acid phosphatase (PAP248-286 and
PAP85-120) and semenogelins (SEM1 and SEM2) form amyloid fibrils in seminal fluid, which …

[PDF][PDF] Hsp104 and potentiated variants can operate as distinct nonprocessive translocases

…, KL Mack, ME Jackrel, EA Sweeny, LM Castellano… - Biophysical …, 2019 - cell.com
Heat shock protein (Hsp) 104 is a hexameric ATPases associated with diverse cellular activities
motor protein that enables cells to survive extreme stress. Hsp104 couples the energy of …