Author

Jonathan Sayewich

Hospital for Sick Children

Listed by name: these papers carry no ORCID for this author, so different people with the same name may be mixed together.

Biology Disciplines

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Microbiology· 2

Signature Assays, Organisms & Methods

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Research Focus:drug response / drug discovery· 2 Organism:E. coli· 2 Approach:experimental assay· 2 Assay:proteomics· 2 Approach:statistical model· 2

Frequent Co-Authors

Chelsea ReitzeliD· 2 shared Jennifer Geddes‐McAlisteriD· 2 shared Norris Chan· 2 shared Oscar Romero· 2 shared Stevan CucićiD· 2 shared

Activity by Year

2026-2026 · peak 2/yr

Co-Author Collaboration Network

5 top collaborators · 10 mutual co-author links

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2 shared papersMicrobiology

Chelsea ReitzelORCID

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2 papers

Recent·Most cited

Iron-responsive phosphorylation of TolQ modulates cell envelope integrity and antibiotic susceptibility in Klebsiella pneumoniae

Chelsea Reitzel, Jonathan Sayewich, Stevan Cucić, Oscar Romero, Norris Chan, Jennifer Geddes‐McAlister

This study identifies iron-dependent phosphorylation of TolQ in K. pneumoniae, linking iron availability to Tol-Pal system function and antibiotic susceptibility.

bioRxiv · Apr 27, 2026 · PreprintMicrobiology

SbmA coordinates iron homeostasis and antimicrobial susceptibility in Klebsiella pneumoniae through phosphorylation-dependent regulation

Chelsea Reitzel, Jonathan Sayewich, Stevan Cucić, Oscar Romero, Norris Chan, Jennifer Geddes‐McAlister

This study identifies SbmA as a regulator of iron homeostasis and antimicrobial susceptibility in K. pneumoniae through phosphorylation-dependent mechanisms, revealing it as a potential therapeutic target.

bioRxiv · Apr 27, 2026 · PreprintMicrobiology