Structural basis for a class of nanomolar influenza A neuraminidase inhibitors.

Abstract:

:The influenza virus neuraminidase (NA) is essential for the virus life cycle. The rise of resistance mutations against current antiviral therapies has increased the need for the development of novel inhibitors. Recent efforts have targeted a cavity adjacent to the catalytic site (the 150-cavity) in addition to the primary catalytic subsite in order to increase specificity and reduce the likelihood of resistance. This study details structural and in vitro analyses of a class of inhibitors that bind uniquely in both subsites. Crystal structures of three inhibitors show occupation of the 150-cavity in two distinct and novel binding modes. We believe these are the first nanomolar inhibitors of NA to be characterized in this way. Furthermore, we show that one inhibitor, binding within the catalytic site, offers reduced susceptibility to known resistance mutations via increased flexibility of a pendant pentyloxy group and the ability to pivot about a strong hydrogen-bonding network.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Kerry PS,Mohan S,Russell RJ,Bance N,Niikura M,Pinto BM

doi

10.1038/srep02871

subject

Has Abstract

pub_date

2013-10-16 00:00:00

pages

2871

issn

2045-2322

pii

srep02871

journal_volume

3

pub_type

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