The Mechanism of Caseinolytic Protease (ClpP) Inhibition
作者:Malte Gersch、Felix Gut、Vadim S. Korotkov、Johannes Lehmann、Thomas Böttcher、Marion Rusch、Christian Hedberg、Herbert Waldmann、Gerhard Klebe、Stephan A. Sieber
DOI:10.1002/anie.201204690
日期:2013.3.4
Catch me if you can: The ClpPprotease mediates protein homeostasis and can be efficiently inhibited by β‐lactones. A combination of molecular docking, mutagenesis, activity‐based protein profiling, and kinetics studies now reveals the mechanism of ClpPinhibition. A hydrophobic pocket next to the active site allows binding of long aliphatic and aromatic residues. The preferred stereoisomer binds into
Solid-phase synthesis of a library of linear oligoester ion-channels
作者:Thomas Murray Fyles、Horace Luong
DOI:10.1039/b816648j
日期:——
A solid-phase synthesis protocol was used to prepare fifteen new linear tetra-, and penta-esters structurally related to an active lead compound. The structures were assembled from three types of hydroxyl protected building blocks: monoalkyl esters of hydroxyglutaric acid, ω-hydroxyacids, and α-hydroxymethylalkanoic acids. The standard methodology gave acceptable quantities of material free of small molecule impurities. Mass spectrometric analysis revealed the presence of deletions due to incomplete coupling, as well as additions and macrolactones due to partial acidic rearrangement on release from the solid-support. The amount of these impurities could be estimated from the 1H NMR spectra, and their implications for subsequent activity analysis are discussed.
Mechanistic analysis of aliphatic β-lactones in Vibrio harveyi reveals a quorum sensing independent mode of action
作者:Weining Zhao、Nicola Lorenz、Kirsten Jung、Stephan A. Sieber
DOI:10.1039/c6cc05807h
日期:——
β-Lactone analogs of autoinducers potently inhibitVibrio harveyibioluminescence using a quorum sensing independent mechanism interfering with fatty acid biosynthesis.