Abstract:
:Conformational dynamics plays an important role in enzyme catalysis, allosteric regulation of protein functions and assembly of macromolecular complexes. Despite these well-established roles, such information has yet to be exploited for drug design. Here we show by nuclear magnetic resonance spectroscopy that inhibitors of LpxC--an essential enzyme of the lipid A biosynthetic pathway in Gram-negative bacteria and a validated novel antibiotic target--access alternative, minor population states in solution in addition to the ligand conformation observed in crystal structures. These conformations collectively delineate an inhibitor envelope that is invisible to crystallography, but is dynamically accessible by small molecules in solution. Drug design exploiting such a hidden inhibitor envelope has led to the development of potent antibiotics with inhibition constants in the single-digit picomolar range. The principle of the cryptic inhibitor envelope approach may be broadly applicable to other lead optimization campaigns to yield improved therapeutics.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Lee CJ,Liang X,Wu Q,Najeeb J,Zhao J,Gopalaswamy R,Titecat M,Sebbane F,Lemaitre N,Toone EJ,Zhou Pdoi
10.1038/ncomms10638subject
Has Abstractpub_date
2016-02-25 00:00:00pages
10638issn
2041-1723pii
ncomms10638journal_volume
7pub_type
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