Rapid synthesis of cyclic oligomeric depsipeptides with positional, stereochemical, and macrocycle size distribution control
作者:Suzanne M. Batiste、Jeffrey N. Johnston
DOI:10.1073/pnas.1616462114
日期:2016.12.27
Macrocyclic small molecules are attractive tools in the development of sensors, new materials, and therapeutics. Within early-stage drug discovery, they are increasingly sought for their potential to interact with broad surfaces of peptidic receptors rather than within their narrow folds and pockets. Cyclization of linear small molecule precursors is a...
Synthesis and antitumor activity of (−)-bassianolide in MDA-MB 231 breast cancer cells through cell cycle arrest
作者:Bohyun Mun、Yong Joo Park、Gi Ho Sung、Yunmi Lee、Ki Hyun Kim
DOI:10.1016/j.bioorg.2016.09.008
日期:2016.12
using Ghosez’s chloroenamine reagent under mild conditions. The cytotoxicity of the (−)-bassianolide was evaluated against five human tumorcells, and the results showed that the (−)-bassianolide displayed significant cytotoxicity against A549, SK-OV-3, HepG2, HCT-15, MCF-7 and MDA-MB 231 cell lines with IC50 values of 7.24, 8.44, 15.39, 6.40, 11.42 and 3.98 μg/mL respectively. Specifically, (−)-bassianolide
Harnessing fungal nonribosomal cyclodepsipeptide synthetases for mechanistic insights and tailored engineering
作者:Charlotte Steiniger、Sylvester Hoffmann、Andi Mainz、Marcel Kaiser、Kerstin Voigt、Vera Meyer、Roderich D. Süssmuth
DOI:10.1039/c7sc03093b
日期:——
Hybrid fungal CDP synthetases are constructed from three different origins to produce highly active cyclodepsipeptides up to g L−1 scale.
混合真菌CDP合成酶是由三种不同来源构建的,以产生高活性的环状肽类物质,可达到g/L级别。
Functional dissection and module swapping of fungal cyclooligomer depsipeptide synthetases
作者:Dayu Yu、Fuchao Xu、David Gage、Jixun Zhan
DOI:10.1039/c3cc42425a
日期:——
BbBSLS and BbBEAS were dissected and reconstituted in Saccharomyces cerevisiae. The intermodular linker is essential for the reconstitution of the separate modules. Module 1 can be swapped between BbBEAS and BbBSLS, while modules 2 and 3 control the product profiles. BbBSLS is a flexible enzyme that also synthesizes beauvericins.
not recover bassianolide biosynthesis. In order to address the functional implications of the protein insertion, we characterized the N-methyltransferase activity of the MT domain as both the isolated domain (MTBSLS) and as part of the full NRPS megaenzyme. Surprisingly, the MTBSLS construct demonstrated a relaxed substrate specificity and preferentially methylated an aminoacid (L-Phe-SNAC) that is rarely