Project description:To explore the protein components for scallop byssus, the soluble fractions of scallop byssus was extract. For mass spectrometric analysis, proteins were extracted from byssal adhesive plaques, and the whole protein smple was treated with trypsin and analyzed using Thermo Fisher Q Exactive Mass Spectrometer (Thermo Fisher Scientific, USA). The mass spectrometry raw data were searched against the full set of predicted proteins from the C. farreri genome and Transcriptome using Mascot v2.3.0 (Matrix Science, London, UK).
Project description:To explore the protein components for scallop byssus, the soluble fractions of scallop byssus was extract. For mass spectrometric analysis, proteins were extracted from byssal adhesive plaques, and the major SDS-PAGE fractions was treated with trypsin and analyzed using an Easy-nLC nanoflow HPLC system connected to an Orbitrap Elite mass spectrometer (Thermo Fisher Scientific, USA). The mass spectrometry raw data were searched against the full set of predicted proteins from the C. farreri genome using Mascot v2.3.0 (Matrix Science, London, UK).
Project description:β3-adrenergic receptor (β3-AR) hormonal signaling is imperative for adaptative thermogenesis, facilitating heat generation during cold exposure. This study explores how β3-AR signaling regulates thermogenic gene activation by altering the three-dimensional (3D) genome organization. Our findings reveal a rapid 3D genome reorganization in brown adipocytes following 4 hours of β3-AR stimulation, highlighted by high-resolution Micro-C analysis. This reorganization involves substantial dynamic changes in chromatin loops, coupled with activation of genes involved in thermogenesis. Mechanistically, β3-AR signaling promotes the p18Hamlet/SRCAP complex assembly, catalyzing the chromatin incorporation of the histone variant H2A.Z. H2A.Z incorporation enhances chromatin accessibility at loop anchors, facilitating loop formation. Disruption of H2A.Z impairs loop dynamics and thermogenic function of brown adipocytes, with implications for both mice and humans. Notably, human homologous loop anchors are associated with obesity-related genetic variants. This study underscores the critical role of 3D genome architecture in thermogenic regulation, offering new dimensions into obesity’s molecular underpinnings.
