Project description:TNNT1 mutations are associated with congenital myopathies. Here, we aimed to investigate whether troponin T post-translational modifications would be affected by the mutations. For that, we used muscle biopsy specimens from patients with TNNT1 mutations and controls. We then defined the nature and location of troponin T post-translational modifications using LC/MS.
Project description:Recombinant antibodies to histone post-translational modifications (PTMs), with their essentially infinite renewability, could fundamentally eliminate a major source of low reproducibility in epigenetics research. Here, we report new recombinant antibodies to trimethylated Lys4 and Lys9, respectively, on histone H3. Quantitative characterization demonstrated their exquisite specificity and high affinity, and they performed well in common epigenetics applications, including ChIP. These results demonstrate the feasibility of generating recombinant antibodies to a range of histone marks, which will accelerate epigenetics research. We characterized recombinant antibodies with native ChIP using HEK293 cells followed by deep sequencing.
Project description:Recombinant antibodies to histone post-translational modifications (PTMs), with their essentially infinite renewability, could fundamentally eliminate a major source of low reproducibility in epigenetics research. Here, we report new recombinant antibodies to trimethylated Lys4 and Lys9, respectively, on histone H3. Quantitative characterization demonstrated their exquisite specificity and high affinity, and they performed well in common epigenetics applications, including ChIP. These results demonstrate the feasibility of generating recombinant antibodies to a range of histone marks, which will accelerate epigenetics research.
Project description:Analysis of post-translational modifications on mitochondrial protein L12 (MRPL12). MRPL12 was overexpressed in HeLa or HEK293 cells, immunoprecipitated, and subject to bottom-up proteomic analysis on an Agilent 6545 LC-qTOF.
Project description:As histones undergo major changes in their post-translational modifications during mitotic entry, we speculated that the spectrum of cell cycle-specific histone modifications might contribute to chromosome compaction during mitosis. To test this hypothesis, we isolated core histones from interphase and mitotic cells and reconstituted chromatin with them. We used mass spectrometry to show that key post-translational modifications remained intact during our isolation procedure.
Project description:Aim of the project was to identify interactors and post-translational modifications of recombinant 3xFLAG-6xHis-tagged human GRHL1, tandem-affinity purified from isolated HEK293 nuclei treated with DMSO as control or with the phytochemical papaverine.
Project description:The present study investigates the ion mobility characteristics of synthetic peptides carrying 22 different post-translational modifications by Ion Mobility-Mass Spectrometry. Samples were kindly provided by the ProteomeTools project.