J
Janek Szychowski
Researcher at Université de Montréal
Publications - 11
Citations - 339
Janek Szychowski is an academic researcher from Université de Montréal. The author has contributed to research in topics: Paromomycin & Aminoglycoside. The author has an hindex of 10, co-authored 11 publications receiving 322 citations. Previous affiliations of Janek Szychowski include Isis Pharmaceuticals.
Papers
More filters
Journal ArticleDOI
Antibacterial aminoglycosides with a modified mode of binding to the ribosomal-RNA decoding site
Boris François,Janek Szychowski,Susanta Adhikari,Kandasamy Pachamuthu,Eric E. Swayze,Richard H. Griffey,Michael T. Migawa,Eric Westhof,Stephen Hanessian +8 more
TL;DR: Antibacterial aminoglycosides with a modified mode of binding to the ribosomal-RNA decoding site and their application in drug discovery and development is described.
Journal ArticleDOI
Structure-Based Design, Synthesis, and A-Site rRNA Cocrystal Complexes of Functionally Novel Aminoglycoside Antibiotics: C2'' Ether Analogues of Paromomycin
Stephen Hanessian,Janek Szychowski,Susanta Adhikari,Guillermo Vasquez,Pachamuthu Kandasamy,Eric E. Swayze,Michael T. Migawa,Ray Ranken,Boris François,Julia Wirmer-Bartoschek,Jiro Kondo,Eric Westhof +11 more
TL;DR: In this paper, a series of 2 O-substituted ether analogues of paromomycin were prepared based on new site-selective functionalizations, and X-ray cocrystal complexes of several such analogues revealed a new mode of binding in the A-site rRNA, whereby rings I and II adopted the familiar orientation and position previously observed with paromycin, but rings III and IV were oriented differently.
Journal ArticleDOI
Crystal structure of the bacterial ribosomal decoding site complexed with a synthetic doubly functionalized paromomycin derivative: a new specific binding mode to an a-minor motif enhances in vitro antibacterial activity.
Jiro Kondo,Kandasamy Pachamuthu,Boris François,Janek Szychowski,Stephen Hanessian,Eric Westhof +5 more
TL;DR: Improved antibacterial activity supports the conclusion that analogue 1 might affect protein synthesis on the ribosome in two different ways: 1) specific binding to the A site forces maintenance of the “on” state with two bulged out adenines, and 2) a new binding mode of 1 to an A‐minor motif which stabilizes complex formation between the Ribosome and the mRNA–tRNA complex regardless of whether the codon–anticodon stem is of the
Journal ArticleDOI
Structure-based design, synthesis and A-site rRNA co-crystal complexes of novel amphiphilic aminoglycoside antibiotics with new binding modes: a synergistic hydrophobic effect against resistant bacteria.
Stephen Hanessian,Kandasamy Pachamuthu,Janek Szychowski,Alexandre Giguère,Eric E. Swayze,Michael T. Migawa,Boris François,Jiro Kondo,Jiro Kondo,Eric Westhof +9 more
TL;DR: Incorporation of an hydrophobic (phenethylamino)ethyl ether at C2″ of N1-(HABA)-3',4'-dideoxyparomomycin led to a novel analog with an excellent antibacterial profile against a host of resistant bacteria.
Journal ArticleDOI
Inhibition of aminoglycoside-deactivating enzymes APH(3')-IIIa and AAC(6')-Ii by amphiphilic paromomycin O2''-ether analogues.
Janek Szychowski,Jiro Kondo,Jiro Kondo,Omar K. Zahr,Karine Auclair,Eric Westhof,Stephen Hanessian,Jeffrey W. Keillor,Jeffrey W. Keillor +8 more
TL;DR: The future of these antibiotics will eventually be compromised by the emergence of bacterial resistance, and in order to overcome this threat to human health, the structures of some other classes of antibiotics have also been substantially modified.