Analytics of the therapeutic peptide aviptadil by sheathless CE-MS and comparison with nanoRP-HPLC-MS.
Purification and quality control of therapeutic peptides is often performed by one single method, RP-HPLC. As usage of an orthogonal technique is highly advisable for quality assurance, capillary electrophoresis (CE) employing a coated capillary coupled via a sheathless interface to a mass spectrometer was applied in parallel. The basic therapeutic peptide aviptadil served as a…Read More
High-Throughput Screening of a Promoter Library Reveals New Persister Mechanisms in Escherichia Coli
Persister cells are a small subpopulation of phenotypic variants that survive excessive concentrations of bactericidal antibiotics. Their survival mechanisms will not be heritable and will be fashioned stochastically or triggered by environmental stresses equivalent to antibiotic therapy. On this examine, high-throughput screening of an Escherichia coli promoter library and subsequent validation experiments recognized a number…Read More