Abstract
| Original language | English |
|---|---|
| Pages (from-to) | 6230-6232 |
| Number of pages | 3 |
| Journal | Bioorganic & Medicinal Chemistry Letters |
| Volume | 19 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 01 Nov 2009 |
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Inhibitor profiling of the Pseudomonas aeruginosa virulence factor LasB using N-alpha mercaptoamide template-based inhibitors. / Cathcart, George; Gilmore, Brendan; Greer, Brett; Harriott, Patrick; Walker, Brian.
In: Bioorganic & Medicinal Chemistry Letters, Vol. 19, No. 21, 01.11.2009, p. 6230-6232.Research output: Contribution to journal › Article
TY - JOUR
T1 - Inhibitor profiling of the Pseudomonas aeruginosa virulence factor LasB using N-alpha mercaptoamide template-based inhibitors
AU - Cathcart, George
AU - Gilmore, Brendan
AU - Greer, Brett
AU - Harriott, Patrick
AU - Walker, Brian
PY - 2009/11/1
Y1 - 2009/11/1
N2 - We report on the synthesis and biological evaluation of a focussed library of N-alpha mercaptoamide containing dipeptides as inhibitors of the zinc metallopeptidase Pseudomonas aeruginosa elastase (LasB, EC 3.4.24.26). The aim of the study was to derive an inhibitor profile for LasB with regard to mapping the S´1 binding site of the enzyme. Consequently, a focussed library of 160 members has been synthesised, using standard Fmoc-solid phase methods (on a Rink-amide resin), in which a subset of amino acids including examples of those with basic (Lys, Arg), aromatic (Phe, Trp), large aliphatic (Val, Leu) and acidic (Asp, Glu) side-chains populated the P´2 position of the inhibitor sequence and all 20 natural amino acids were incorporated, in turn, at the P´1 position. The study has revealed a preference for aromatic and/or large aliphatic amino acids at P´1 and a distinct bias against acidic residues at P´2. Ten inhibitor sequences were discovered that exhibited sub to low micromolar Ki values.
AB - We report on the synthesis and biological evaluation of a focussed library of N-alpha mercaptoamide containing dipeptides as inhibitors of the zinc metallopeptidase Pseudomonas aeruginosa elastase (LasB, EC 3.4.24.26). The aim of the study was to derive an inhibitor profile for LasB with regard to mapping the S´1 binding site of the enzyme. Consequently, a focussed library of 160 members has been synthesised, using standard Fmoc-solid phase methods (on a Rink-amide resin), in which a subset of amino acids including examples of those with basic (Lys, Arg), aromatic (Phe, Trp), large aliphatic (Val, Leu) and acidic (Asp, Glu) side-chains populated the P´2 position of the inhibitor sequence and all 20 natural amino acids were incorporated, in turn, at the P´1 position. The study has revealed a preference for aromatic and/or large aliphatic amino acids at P´1 and a distinct bias against acidic residues at P´2. Ten inhibitor sequences were discovered that exhibited sub to low micromolar Ki values.
UR - http://www.scopus.com/inward/record.url?scp=71749100910&partnerID=8YFLogxK
U2 - 10.1016/j.bmcl.2009.08.099
DO - 10.1016/j.bmcl.2009.08.099
M3 - Article
VL - 19
SP - 6230
EP - 6232
JO - Bioorganic and Medicinal Chemistry Letters
JF - Bioorganic and Medicinal Chemistry Letters
SN - 0960-894X
IS - 21
ER -