User profiles for P. Lynne Howell

P. Lynne Howell

The Hospital for Sick Children
Verified email at sickkids.ca
Cited by 12834

[HTML][HTML] Biosynthesis of the Pseudomonas aeruginosa Extracellular Polysaccharides, Alginate, Pel, and Psl

…, DE Nivens, JT Weadge, PL Howell - Frontiers in …, 2011 - frontiersin.org
Pseudomonas aeruginosa thrives in many aqueous environments and is an opportunistic
pathogen that can cause both acute and chronic infections. Environmental conditions and host …

Exopolysaccharide biosynthetic glycoside hydrolases can be utilized to disrupt and prevent Pseudomonas aeruginosa biofilms

…, MR Parsek, DC Sheppard, DJ Wozniak, PL Howell - Science …, 2016 - science.org
Bacterial biofilms present a significant medical challenge because they are recalcitrant to
current therapeutic regimes. A key component of biofilm formation in the opportunistic human …

Pseudomonas aeruginosa Alginate Overproduction Promotes Coexistence with Staphylococcus aureus in a Model of Cystic Fibrosis Respiratory Infection

…, N Grahl, DA Hogan, LG Rahme, PL Howell… - MBio, 2017 - Am Soc Microbiol
While complex intra- and interspecies microbial community dynamics are apparent during
chronic infections and likely alter patient health outcomes, our understanding of these …

[HTML][HTML] The molecular mechanism of the type IVa pilus motors

…, S Tammam, A Khan, LL Burrows, PL Howell - Nature …, 2017 - nature.com
Type IVa pili are protein filaments essential for virulence in many bacterial pathogens; they
extend and retract from the surface of bacterial cells to pull the bacteria forward. The motor …

[PDF][PDF] A phage-encoded anti-activator inhibits quorum sensing in Pseudomonas aeruginosa

…, M McCallum, J Bondy-Denomy, PL Howell… - Molecular Cell, 2021 - cell.com
The arms race between bacteria and phages has led to the evolution of diverse anti-phage
defenses, several of which are controlled by quorum-sensing pathways. In this work, we …

[HTML][HTML] The role of Psl in the failure to eradicate Pseudomonas aeruginosa biofilms in children with cystic fibrosis

…, KM Guttman, P Lynne Howell… - npj Biofilms and …, 2021 - nature.com
The exopolysaccharide Psl contributes to biofilm structure and antibiotic tolerance and may
play a role in the failure to eradicate Pseudomonas aeruginosa from cystic fibrosis (CF) …

The phage λ major tail protein structure reveals a common evolution for long-tailed phages and the type VI bacterial secretion system

…, LW Donaldson, P Lynne Howell… - Proceedings of the …, 2009 - National Acad Sciences
Most bacteriophages possess long tails, which serve as the conduit for genome delivery.
We report the solution structure of the N-terminal domain of gpV, the protein comprising the …

Pel is a cationic exopolysaccharide that cross-links extracellular DNA in the Pseudomonas aeruginosa biofilm matrix

…, A Filloux, DJ Wozniak, PL Howell… - Proceedings of the …, 2015 - National Acad Sciences
Biofilm formation is a complex, ordered process. In the opportunistic pathogen Pseudomonas
aeruginosa, Psl and Pel exopolysaccharides and extracellular DNA (eDNA) serve as …

The Pel and Psl polysaccharides provide Pseudomonas aeruginosa structural redundancy within the biofilm matrix

…, JC Whitney, C Ryder, PL Howell… - Environmental …, 2012 - Wiley Online Library
Extracellular polysaccharides comprise a major component of the biofilm matrix. Many
species that are adept at biofilm formation have the capacity to produce multiple types of …

Precision-engineering the Pseudomonas aeruginosa genome with two-step allelic exchange

…, Y Irie, KM Storek, JJ Yang, RJ Siehnel, PL Howell… - Nature protocols, 2015 - nature.com
Allelic exchange is an efficient method of bacterial genome engineering. This protocol
describes the use of this technique to make gene knockouts and knock-ins, as well as single-…